【emWin实战教程V2.0】第38章窗口管理器官方实例简单讲解

转最新版本教程

转最新版本教程
为了帮助大家更好的理解窗口管理器的回调和消息机制，官方也提供了好几个这方面的例子，本章节我们将官方这几个例子也跟大家进行简单讲解，进一步帮助大家更好的学习窗口管理器。
38.1 初学者重要提示
38.2 官方WM_Redraw.c实例讲解
38.3 官方WM_Sample.c实例讲解（含大量窗口API操作）
38.4 官方WM_LateClipping.c实例讲解
38.5 官方WM_Video.c实例讲解
38.6 总结

lee_st · 2017-2-19 12:13:53

3.    文本显示函数。
4.    用户自定义消息ID。
5.    字符串复制，将Data.p中的数据复制到_acInfoText中。
6.    在WM_PAINT消息中显示文本acInfoText。

lee_st · 2017-2-19 12:14:10

38.3.2 Redrawing部分演示
/*******************************************************************
*
*       _LiftUp
*/
static void _LiftUp(int dy) {//--------------（1）
  int i;
  int tm;

  for (i = 0; i < (dy/4); i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, 0, -4);
    WM_MoveWindow(_hWindow2, 0, -4);
    while ((GUI_GetTime() - tm) < 20) {
      WM_Exec();
    }
  }
}

/*******************************************************************
*
*       _LiftDown
*/
static void _LiftDown(int dy) { //--------------（2）
  int i;
  int tm;

  for (i = 0; i < (dy/4); i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, 0, 4);
    WM_MoveWindow(_hWindow2, 0, 4);
    while ((GUI_GetTime() - tm) < 20) {
      WM_Exec();
    }
  }
}

/*******************************************************************
*
*       _DemoRedrawing
*
* Function description
*   Demonstrates how useful can be a callback
*/
static void _DemoRedrawing(void) {
  int i;
  int tm;
  int tDiff;

  _ChangeInfoText("Demonstrating redrawing");
  GUI_Delay(SPEED);
  _LiftUp(40);
  GUI_Delay(SPEED/3);
  _ChangeInfoText("Using a callback for redrawing");
  GUI_Delay(SPEED/3);
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1,  1,  1);
    WM_MoveWindow(_hWindow2, -1, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, -1, -1);
    WM_MoveWindow(_hWindow2,  1,  1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED/4);
  _LiftDown(30);
  GUI_Delay(SPEED/2);
  _ChangeInfoText("Without redrawing");
  GUI_Delay(SPEED);
  _LiftUp(30);
  GUI_Delay(SPEED/4);
  WM_SetCallback(WM_HBKWIN, _cbBkWindowOld);
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1,  1,  1);
    WM_MoveWindow(_hWindow2, -1, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, -1, -1);
    WM_MoveWindow(_hWindow2,  1,  1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED/3);
  WM_SetCallback(WM_HBKWIN, _cbBkWindow);
  _LiftDown(40);
  GUI_Delay(SPEED);
}

lee_st · 2017-2-19 12:18:32

这部分代码实现了两个窗口在具有重绘和不具有重绘功能时的演示，还有一个重点是学习窗口移动函数WM_MoveWindow的使用，这个函数是实现相对移动，相对于窗口当前所在的位置。另外还一个窗口移动函数WM_MoveTo是绝对位置移动，设置移动到那个坐标点就移动到那个坐标点。
1. 实现两个窗口向上移动。
2. 实现两个窗口向下移动。

lee_st · 2017-2-19 12:18:54

显示效果如下：

lee_st · 2017-2-19 12:19:13

38.3.3 Resize部分演示
/*******************************************************************
*
*       _DemoResizeWindow
*
* Function description
*   Demonstrates the use of WM_ResizeWindow
*/
static void _DemoResizeWindow(void) {
  int i;
  int tm;
  int tDiff;

  _ChangeInfoText("WM_ResizeWindow()");
  GUI_Delay(SPEED);
  _LiftUp(30);
  for (i = 0; i < 20; i++) {
    tm = GUI_GetTime();
    WM_ResizeWindow(_hWindow1,  1,  1);
    WM_ResizeWindow(_hWindow2, -1, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 40; i++) {
    tm = GUI_GetTime();
    WM_ResizeWindow(_hWindow1, -1, -1);
    WM_ResizeWindow(_hWindow2,  1,  1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 20; i++) {
    tm = GUI_GetTime();
    WM_ResizeWindow(_hWindow1,  1,  1);
    WM_ResizeWindow(_hWindow2, -1, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  _LiftDown(30);
  GUI_Delay(SPEED);
}

lee_st · 2017-2-19 12:19:29

这部分演示主要看窗口加大和减小函数WM_ResizeWindow()的使用，注意这个函数是对窗口的显示大小进行加大和减小，并不是进行放缩，显示效果如下：

lee_st · 2017-2-19 12:19:45

38.4官方WM_LateClipping.c实例讲解

这个DEMO在模拟器中的位置：

lee_st · 2017-2-19 12:20:04

主要功能介绍：
   这个例子依然主要演示回调函数的重绘机制，作为重绘机制方面的学习，比较有参考价值。
下面我们将这个代码分析一下：
#include "GUI.h"
#include "WM.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
static WM_HWIN _hWin1;
static WM_HWIN _hWin2;
static WM_HWIN _hBut1;
static WM_HWIN _hBut2;
static int     _PaintCount1;
static int     _PaintCount2;

static GUI_COLOR _aColors[] = {
  0x0000FF, 0x00FF00, 0xFF0000, 0x00FFFF, 0xA000A0, 0xFFFF00
};

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) { //--------------（1）
  switch(pMsg->MsgId) {
  case WM_PAINT:     //--------------（2）
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_DispStringAt("PaintCount (Early):", 0, 0);
    GUI_DispDecAt(_PaintCount1, 120, 0, 5);
    GUI_SetColor(0x00FFC0);
    GUI_DispStringAt("PaintCount (Late):", 0, 12);
    GUI_DispDecAt(_PaintCount2, 120, 12, 5);
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      if (pMsg->hWinSrc == _hBut1) { //--------------（3）
        WM_InvalidateWindow(_hWin1);
        WM_InvalidateWindow(_hWin2);
      } else if (pMsg->hWinSrc == _hBut2) { //--------------（4）
        _PaintCount1 = 0;
        _PaintCount2 = 0;
        WM_InvalidateWindow(pMsg->hWin);
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbTop
*/
static void _cbTop(WM_MESSAGE* pMsg) { //--------------（5）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_MAGENTA);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin1
*/
static void _cbFrameWin1(WM_MESSAGE* pMsg) { //--------------（6）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount1 % 6]);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount1++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin2
*/
static void _cbFrameWin2(WM_MESSAGE* pMsg) { //--------------（7）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount2 % 6]);
    GUI_Clear();
    GUI_SetColor(0x00FFC0);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount2++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _ShowDemo
*/
static void _ShowDemo(void) {
  WM_HWIN hWin0;
  WM_HWIN hWin1;
  WM_HWIN hWin2;
  WM_HWIN hFrame1;
  WM_HWIN hFrame2;
  WM_HWIN hClient1;
  WM_HWIN hClient2;

  WM_SetCallback(WM_HBKWIN, _cbBkWin); //--------------（8）
  hFrame1  = FRAMEWIN_CreateEx( 10, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Early Clipping", _cbFrameWin1);
  hFrame2  = FRAMEWIN_CreateEx(170, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Late Clipping",
_cbFrameWin2);
  hClient1 = WM_GetClientWindow(hFrame1);
  hClient2 = WM_GetClientWindow(hFrame2);
  _hWin1  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient1), WM_GetWindowSizeY(hClient1), hClient1,
WM_CF_SHOW, _cbFrameWin1, 0);
  _hWin2  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient2), WM_GetWindowSizeY(hClient2), hClient2,
WM_CF_SHOW | WM_CF_LATE_CLIP, _cbFrameWin2, 0);
  _hBut1  = BUTTON_CreateEx(10, 210, 140, 20, 0, WM_CF_SHOW, 0, 1);
  _hBut2  = BUTTON_CreateEx(170, 210, 140, 20, 0, WM_CF_SHOW, 0, 2);
  hWin0 = FRAMEWIN_CreateEx(60,  80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 0",
_cbTop);
  hWin1 = FRAMEWIN_CreateEx(220, 80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 1",
_cbTop);
  hWin2 = FRAMEWIN_CreateEx(140,170, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 2",
_cbTop);
  FRAMEWIN_SetResizeable(hWin0, 1);
  FRAMEWIN_SetResizeable(hWin1, 1);
  FRAMEWIN_SetResizeable(hWin2, 1);
  BUTTON_SetText(_hBut1, "Invalidate");
  BUTTON_SetText(_hBut2, "Reset counters");
  while(1) {
    GUI_Delay(50);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  while(1) {
    _ShowDemo();
  }
}

lee_st · 2017-2-19 12:20:08

#include "GUI.h"
#include "WM.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
static WM_HWIN _hWin1;
static WM_HWIN _hWin2;
static WM_HWIN _hBut1;
static WM_HWIN _hBut2;
static int     _PaintCount1;
static int     _PaintCount2;

static GUI_COLOR _aColors[] = {
  0x0000FF, 0x00FF00, 0xFF0000, 0x00FFFF, 0xA000A0, 0xFFFF00
};

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) { //--------------（1）
  switch(pMsg->MsgId) {
  case WM_PAINT:     //--------------（2）
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_DispStringAt("PaintCount (Early):", 0, 0);
    GUI_DispDecAt(_PaintCount1, 120, 0, 5);
    GUI_SetColor(0x00FFC0);
    GUI_DispStringAt("PaintCount (Late):", 0, 12);
    GUI_DispDecAt(_PaintCount2, 120, 12, 5);
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      if (pMsg->hWinSrc == _hBut1) { //--------------（3）
        WM_InvalidateWindow(_hWin1);
        WM_InvalidateWindow(_hWin2);
      } else if (pMsg->hWinSrc == _hBut2) { //--------------（4）
        _PaintCount1 = 0;
        _PaintCount2 = 0;
        WM_InvalidateWindow(pMsg->hWin);
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbTop
*/
static void _cbTop(WM_MESSAGE* pMsg) { //--------------（5）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_MAGENTA);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin1
*/
static void _cbFrameWin1(WM_MESSAGE* pMsg) { //--------------（6）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount1 % 6]);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount1++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin2
*/
static void _cbFrameWin2(WM_MESSAGE* pMsg) { //--------------（7）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount2 % 6]);
    GUI_Clear();
    GUI_SetColor(0x00FFC0);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount2++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _ShowDemo
*/
static void _ShowDemo(void) {
  WM_HWIN hWin0;
  WM_HWIN hWin1;
  WM_HWIN hWin2;
  WM_HWIN hFrame1;
  WM_HWIN hFrame2;
  WM_HWIN hClient1;
  WM_HWIN hClient2;

  WM_SetCallback(WM_HBKWIN, _cbBkWin); //--------------（8）
  hFrame1  = FRAMEWIN_CreateEx( 10, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Early Clipping", _cbFrameWin1);
  hFrame2  = FRAMEWIN_CreateEx(170, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Late Clipping",
_cbFrameWin2);
  hClient1 = WM_GetClientWindow(hFrame1);
  hClient2 = WM_GetClientWindow(hFrame2);
  _hWin1  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient1), WM_GetWindowSizeY(hClient1), hClient1,
WM_CF_SHOW, _cbFrameWin1, 0);
  _hWin2  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient2), WM_GetWindowSizeY(hClient2), hClient2,
WM_CF_SHOW | WM_CF_LATE_CLIP, _cbFrameWin2, 0);
  _hBut1  = BUTTON_CreateEx(10, 210, 140, 20, 0, WM_CF_SHOW, 0, 1);
  _hBut2  = BUTTON_CreateEx(170, 210, 140, 20, 0, WM_CF_SHOW, 0, 2);
  hWin0 = FRAMEWIN_CreateEx(60,  80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 0",
_cbTop);
  hWin1 = FRAMEWIN_CreateEx(220, 80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 1",
_cbTop);
  hWin2 = FRAMEWIN_CreateEx(140,170, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 2",
_cbTop);
  FRAMEWIN_SetResizeable(hWin0, 1);
  FRAMEWIN_SetResizeable(hWin1, 1);
  FRAMEWIN_SetResizeable(hWin2, 1);
  BUTTON_SetText(_hBut1, "Invalidate");
  BUTTON_SetText(_hBut2, "Reset counters");
  while(1) {
    GUI_Delay(50);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  while(1) {
    _ShowDemo();
  }
}

lee_st · 2017-2-19 12:20:11

#include "GUI.h"
#include "WM.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
static WM_HWIN _hWin1;
static WM_HWIN _hWin2;
static WM_HWIN _hBut1;
static WM_HWIN _hBut2;
static int     _PaintCount1;
static int     _PaintCount2;

static GUI_COLOR _aColors[] = {
  0x0000FF, 0x00FF00, 0xFF0000, 0x00FFFF, 0xA000A0, 0xFFFF00
};

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) { //--------------（1）
  switch(pMsg->MsgId) {
  case WM_PAINT:     //--------------（2）
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_DispStringAt("PaintCount (Early):", 0, 0);
    GUI_DispDecAt(_PaintCount1, 120, 0, 5);
    GUI_SetColor(0x00FFC0);
    GUI_DispStringAt("PaintCount (Late):", 0, 12);
    GUI_DispDecAt(_PaintCount2, 120, 12, 5);
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      if (pMsg->hWinSrc == _hBut1) { //--------------（3）
        WM_InvalidateWindow(_hWin1);
        WM_InvalidateWindow(_hWin2);
      } else if (pMsg->hWinSrc == _hBut2) { //--------------（4）
        _PaintCount1 = 0;
        _PaintCount2 = 0;
        WM_InvalidateWindow(pMsg->hWin);
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbTop
*/
static void _cbTop(WM_MESSAGE* pMsg) { //--------------（5）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_MAGENTA);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin1
*/
static void _cbFrameWin1(WM_MESSAGE* pMsg) { //--------------（6）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount1 % 6]);
    GUI_Clear();
    GUI_SetColor(0x0060FF);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount1++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWin2
*/
static void _cbFrameWin2(WM_MESSAGE* pMsg) { //--------------（7）
  switch(pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(_aColors[_PaintCount2 % 6]);
    GUI_Clear();
    GUI_SetColor(0x00FFC0);
    GUI_FillCircle(25, 25, 15);
    GUI_SetColor(GUI_BLACK);
    GUI_DrawCircle(25, 25, 15);
    _PaintCount2++;
    WM_InvalidateWindow(WM_HBKWIN);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _ShowDemo
*/
static void _ShowDemo(void) {
  WM_HWIN hWin0;
  WM_HWIN hWin1;
  WM_HWIN hWin2;
  WM_HWIN hFrame1;
  WM_HWIN hFrame2;
  WM_HWIN hClient1;
  WM_HWIN hClient2;

  WM_SetCallback(WM_HBKWIN, _cbBkWin); //--------------（8）
  hFrame1  = FRAMEWIN_CreateEx( 10, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Early Clipping", _cbFrameWin1);
  hFrame2  = FRAMEWIN_CreateEx(170, 30, 140, 140, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Late Clipping",
_cbFrameWin2);
  hClient1 = WM_GetClientWindow(hFrame1);
  hClient2 = WM_GetClientWindow(hFrame2);
  _hWin1  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient1), WM_GetWindowSizeY(hClient1), hClient1,
WM_CF_SHOW, _cbFrameWin1, 0);
  _hWin2  = WM_CreateWindowAsChild(0, 0, WM_GetWindowSizeX(hClient2), WM_GetWindowSizeY(hClient2), hClient2,
WM_CF_SHOW | WM_CF_LATE_CLIP, _cbFrameWin2, 0);
  _hBut1  = BUTTON_CreateEx(10, 210, 140, 20, 0, WM_CF_SHOW, 0, 1);
  _hBut2  = BUTTON_CreateEx(170, 210, 140, 20, 0, WM_CF_SHOW, 0, 2);
  hWin0 = FRAMEWIN_CreateEx(60,  80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 0",
_cbTop);
  hWin1 = FRAMEWIN_CreateEx(220, 80, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 1",
_cbTop);
  hWin2 = FRAMEWIN_CreateEx(140,170, 40, 40, 0, WM_CF_SHOW | WM_CF_STAYONTOP, FRAMEWIN_CF_MOVEABLE, 0, "Top 2",
_cbTop);
  FRAMEWIN_SetResizeable(hWin0, 1);
  FRAMEWIN_SetResizeable(hWin1, 1);
  FRAMEWIN_SetResizeable(hWin2, 1);
  BUTTON_SetText(_hBut1, "Invalidate");
  BUTTON_SetText(_hBut2, "Reset counters");
  while(1) {
    GUI_Delay(50);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  while(1) {
    _ShowDemo();
  }
}

lee_st · 2017-2-19 12:20:24

1.    桌面窗口回调函数。
2.    桌面窗口回调函数中重绘消息WM_PAINT。
3.    由于两个按钮是创建在桌面窗口上面的，所以按钮的WM_NOTIFICATION_RELEASED（通知代码消息类型）是在桌面窗口的回调函数中。这个按钮按下后将窗口_hWin1和窗口_hWin2无效，从而会执行这两个窗口的背景重绘功能。
4.    同上，只不过这里实现的功能是将两个计数值清零，并使桌面窗口无效，从而执行桌面窗口的重绘消息。

lee_st · 2017-2-19 12:20:35

5.    此函数同时是hWin0，hWin1，hWin2三个框架窗口的回调函数。
6.    此函数是框架窗口hFrame1的回调函数，回调函数中主要实现了重绘消息，重绘消息中记录了重绘的次数，并根据重绘次数修改背景颜色。
7.    此函数是框架窗口hFrame2的回调函数，回调函数中主要实现了重绘消息，重绘消息中记录了重绘的次数，并根据重绘次数修改背景颜色。
8.    （1）先创建两个框架窗口hFrame1和hFrame2。
      （2）分别在这两个框架窗口中创建两个子窗口_hWin1和_hWin2。
      （3）创建两个按钮_hBut1和_hBut2。
      （4）创建三个框架窗口hWin0，hWin1和hWin2。

lee_st · 2017-2-19 12:20:50

这个例子对于研究回调函数函数还是非常好的，大家可以在这个例子的基础上做一些修改，实现一些功能，显示效果如下：

lee_st · 2017-2-19 12:21:06

38.5 官方WM_Video.c实例讲解

这个DEMO在模拟器中的位置：

lee_st · 2017-2-19 12:21:25

主要功能介绍：
      这个例子主要演示框架窗口的创建，删除，隐藏和显示，关于框架窗口暂时还没有讲到，后面章节会专门讲解，跟普通窗口差不多，只是多了一个标题栏，所以将其放在本章节进行讲解也是可以的，用来学习窗口相关的API函数操作。
下面我们将这个代码分析一下：
#include
#include

#include "WM.h"
#include "GUI.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"
#include "TEXT.h"

static void _cbFrameWinTest(WM_MESSAGE * pMsg);

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#define MAX_WINDOWS   50

//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/

static WM_HWIN _ahWin[MAX_WINDOWS];
static char    _IsCompletelyVis;

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _CreateWindow
*/
static void _CreateWindow(void) {  //--------------（1）
  unsigned i;
  WM_HWIN  hWin;
  char     ac[32];
  int      j;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] == 0) {
      j = i + 1;
      sprintf(ac, "Test window %d", j);
      hWin = FRAMEWIN_CreateEx(5 + 10 * i, 135 + 10 * i, 120, 60, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, ac,
_cbFrameWinTest);
      FRAMEWIN_SetClientColor(hWin, GUI_INVALID_COLOR);
      _ahWin[i] = hWin;
      break;
    }
  }
}

/*********************************************************************
*
*       _DeleteWindow
*/
static void _DeleteWindow(void) {  //--------------（2）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_DeleteWindow(_ahWin[i]);
      _ahWin[i] = 0;
      break;
    }
  }
}

/*********************************************************************
*
*       _ShowWindow
*/
static void _ShowWindow(void) {  //--------------（3）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] != 0) {
      if (WM_IsVisible(_ahWin[i]) == 0) {
        WM_ShowWindow(_ahWin[i]);
        break;
      }
    }
  }
}

/*********************************************************************
*
*       _HideWindow
*/
static void _HideWindow(void) {  //--------------（4）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_HideWindow(_ahWin[i]);
      break;
    }
  }
}

/*********************************************************************
*
*       Static code, callbacks
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) {  //--------------（5）
  int Id;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      Id = WM_GetId(pMsg->hWinSrc);
      switch (Id) {
      case GUI_ID_BUTTON0:
        _CreateWindow();
        break;
      case GUI_ID_BUTTON1:
        _DeleteWindow();
        break;
      case GUI_ID_BUTTON2:
        _ShowWindow();
        break;
      case GUI_ID_BUTTON3:
        _HideWindow();
        break;
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinVideo
*/
static void _cbFrameWinVideo(WM_MESSAGE* pMsg) {  //--------------（6）
  WM_HWIN hWin;
  WM_HWIN hText;
  int     IsCompletelyVis;
  int     IsCompletelyCovered;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    if (_IsCompletelyVis) {
      GUI_SetBkColor(GUI_DARKGREEN);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Completely visible", 5, 5);
    } else {
      GUI_SetBkColor(GUI_GRAY);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Not completely visible", 5, 5);
    }
    break;
  case WM_NOTIFY_VIS_CHANGED:
    hText = WM_GetDialogItem(WM_HBKWIN, GUI_ID_TEXT1);
    hWin  = WM_GetClientWindow(pMsg->hWin);
    IsCompletelyVis     = WM_IsCompletelyVisible(hWin);
    IsCompletelyCovered = WM_IsCompletelyCovered(hWin);
    if (IsCompletelyCovered) {
      TEXT_SetText(hText, "completelyncovered");
    } else {
      TEXT_SetText(hText, "not completelyncovered");
    }
    if (_IsCompletelyVis != IsCompletelyVis) {
      _IsCompletelyVis = IsCompletelyVis;
      WM_InvalidateWindow(hWin);    /* Only required if content changes if partially hidden */
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinTest
*/
static void _cbFrameWinTest(WM_MESSAGE* pMsg) {  //--------------（7）
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_DARKRED);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  FRAMEWIN_Handle hWinVideo;
  BUTTON_Handle   hBut;
  WM_HWIN         hText;

  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  WM_SetCallback(WM_HBKWIN, _cbBkWin);
  //--------------（8）
  hText = TEXT_CreateEx(240,  85, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT0, "The clientnwindow is");
  TEXT_SetTextColor(hText, GUI_WHITE);
  hText = TEXT_CreateEx(240, 111, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT1, NULL);
  TEXT_SetTextColor(hText, GUI_WHITE);
  //
  // Create buttons
  //
  hBut = BUTTON_CreateEx(240,  5, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON0);
  BUTTON_SetText(hBut, "Create win");
  hBut = BUTTON_CreateEx(240, 25, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON1);
  BUTTON_SetText(hBut, "Delete win");
  hBut = BUTTON_CreateEx(240, 45, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON2);
  BUTTON_SetText(hBut, "Show win");
  hBut = BUTTON_CreateEx(240, 65, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON3);
  BUTTON_SetText(hBut, "Hide win");
  //
  // Create framewin video
  //
  hWinVideo = FRAMEWIN_CreateEx(5, 5, 170, 120, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Video window",
_cbFrameWinVideo);
  FRAMEWIN_SetClientColor(hWinVideo, GUI_INVALID_COLOR);
  //
  // Create test windows
  //
  _CreateWindow();
  _CreateWindow();
  _CreateWindow();
  while (1) {
    GUI_Delay(1000);
  }
}

lee_st · 2017-2-19 12:21:28

#include
#include

#include "WM.h"
#include "GUI.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"
#include "TEXT.h"

static void _cbFrameWinTest(WM_MESSAGE * pMsg);

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#define MAX_WINDOWS   50

//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/

static WM_HWIN _ahWin[MAX_WINDOWS];
static char    _IsCompletelyVis;

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _CreateWindow
*/
static void _CreateWindow(void) {  //--------------（1）
  unsigned i;
  WM_HWIN  hWin;
  char     ac[32];
  int      j;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] == 0) {
      j = i + 1;
      sprintf(ac, "Test window %d", j);
      hWin = FRAMEWIN_CreateEx(5 + 10 * i, 135 + 10 * i, 120, 60, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, ac,
_cbFrameWinTest);
      FRAMEWIN_SetClientColor(hWin, GUI_INVALID_COLOR);
      _ahWin[i] = hWin;
      break;
    }
  }
}

/*********************************************************************
*
*       _DeleteWindow
*/
static void _DeleteWindow(void) {  //--------------（2）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_DeleteWindow(_ahWin[i]);
      _ahWin[i] = 0;
      break;
    }
  }
}

/*********************************************************************
*
*       _ShowWindow
*/
static void _ShowWindow(void) {  //--------------（3）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] != 0) {
      if (WM_IsVisible(_ahWin[i]) == 0) {
        WM_ShowWindow(_ahWin[i]);
        break;
      }
    }
  }
}

/*********************************************************************
*
*       _HideWindow
*/
static void _HideWindow(void) {  //--------------（4）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_HideWindow(_ahWin[i]);
      break;
    }
  }
}

/*********************************************************************
*
*       Static code, callbacks
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) {  //--------------（5）
  int Id;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      Id = WM_GetId(pMsg->hWinSrc);
      switch (Id) {
      case GUI_ID_BUTTON0:
        _CreateWindow();
        break;
      case GUI_ID_BUTTON1:
        _DeleteWindow();
        break;
      case GUI_ID_BUTTON2:
        _ShowWindow();
        break;
      case GUI_ID_BUTTON3:
        _HideWindow();
        break;
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinVideo
*/
static void _cbFrameWinVideo(WM_MESSAGE* pMsg) {  //--------------（6）
  WM_HWIN hWin;
  WM_HWIN hText;
  int     IsCompletelyVis;
  int     IsCompletelyCovered;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    if (_IsCompletelyVis) {
      GUI_SetBkColor(GUI_DARKGREEN);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Completely visible", 5, 5);
    } else {
      GUI_SetBkColor(GUI_GRAY);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Not completely visible", 5, 5);
    }
    break;
  case WM_NOTIFY_VIS_CHANGED:
    hText = WM_GetDialogItem(WM_HBKWIN, GUI_ID_TEXT1);
    hWin  = WM_GetClientWindow(pMsg->hWin);
    IsCompletelyVis     = WM_IsCompletelyVisible(hWin);
    IsCompletelyCovered = WM_IsCompletelyCovered(hWin);
    if (IsCompletelyCovered) {
      TEXT_SetText(hText, "completelyncovered");
    } else {
      TEXT_SetText(hText, "not completelyncovered");
    }
    if (_IsCompletelyVis != IsCompletelyVis) {
      _IsCompletelyVis = IsCompletelyVis;
      WM_InvalidateWindow(hWin);    /* Only required if content changes if partially hidden */
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinTest
*/
static void _cbFrameWinTest(WM_MESSAGE* pMsg) {  //--------------（7）
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_DARKRED);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  FRAMEWIN_Handle hWinVideo;
  BUTTON_Handle   hBut;
  WM_HWIN         hText;

  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  WM_SetCallback(WM_HBKWIN, _cbBkWin);
  //--------------（8）
  hText = TEXT_CreateEx(240,  85, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT0, "The clientnwindow is");
  TEXT_SetTextColor(hText, GUI_WHITE);
  hText = TEXT_CreateEx(240, 111, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT1, NULL);
  TEXT_SetTextColor(hText, GUI_WHITE);
  //
  // Create buttons
  //
  hBut = BUTTON_CreateEx(240,  5, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON0);
  BUTTON_SetText(hBut, "Create win");
  hBut = BUTTON_CreateEx(240, 25, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON1);
  BUTTON_SetText(hBut, "Delete win");
  hBut = BUTTON_CreateEx(240, 45, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON2);
  BUTTON_SetText(hBut, "Show win");
  hBut = BUTTON_CreateEx(240, 65, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON3);
  BUTTON_SetText(hBut, "Hide win");
  //
  // Create framewin video
  //
  hWinVideo = FRAMEWIN_CreateEx(5, 5, 170, 120, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Video window",
_cbFrameWinVideo);
  FRAMEWIN_SetClientColor(hWinVideo, GUI_INVALID_COLOR);
  //
  // Create test windows
  //
  _CreateWindow();
  _CreateWindow();
  _CreateWindow();
  while (1) {
    GUI_Delay(1000);
  }
}

lee_st · 2017-2-19 12:21:31

#include
#include

#include "WM.h"
#include "GUI.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"
#include "TEXT.h"

static void _cbFrameWinTest(WM_MESSAGE * pMsg);

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#define MAX_WINDOWS   50

//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/

static WM_HWIN _ahWin[MAX_WINDOWS];
static char    _IsCompletelyVis;

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _CreateWindow
*/
static void _CreateWindow(void) {  //--------------（1）
  unsigned i;
  WM_HWIN  hWin;
  char     ac[32];
  int      j;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] == 0) {
      j = i + 1;
      sprintf(ac, "Test window %d", j);
      hWin = FRAMEWIN_CreateEx(5 + 10 * i, 135 + 10 * i, 120, 60, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, ac,
_cbFrameWinTest);
      FRAMEWIN_SetClientColor(hWin, GUI_INVALID_COLOR);
      _ahWin[i] = hWin;
      break;
    }
  }
}

/*********************************************************************
*
*       _DeleteWindow
*/
static void _DeleteWindow(void) {  //--------------（2）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_DeleteWindow(_ahWin[i]);
      _ahWin[i] = 0;
      break;
    }
  }
}

/*********************************************************************
*
*       _ShowWindow
*/
static void _ShowWindow(void) {  //--------------（3）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] != 0) {
      if (WM_IsVisible(_ahWin[i]) == 0) {
        WM_ShowWindow(_ahWin[i]);
        break;
      }
    }
  }
}

/*********************************************************************
*
*       _HideWindow
*/
static void _HideWindow(void) {  //--------------（4）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_HideWindow(_ahWin[i]);
      break;
    }
  }
}

/*********************************************************************
*
*       Static code, callbacks
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) {  //--------------（5）
  int Id;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      Id = WM_GetId(pMsg->hWinSrc);
      switch (Id) {
      case GUI_ID_BUTTON0:
        _CreateWindow();
        break;
      case GUI_ID_BUTTON1:
        _DeleteWindow();
        break;
      case GUI_ID_BUTTON2:
        _ShowWindow();
        break;
      case GUI_ID_BUTTON3:
        _HideWindow();
        break;
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinVideo
*/
static void _cbFrameWinVideo(WM_MESSAGE* pMsg) {  //--------------（6）
  WM_HWIN hWin;
  WM_HWIN hText;
  int     IsCompletelyVis;
  int     IsCompletelyCovered;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    if (_IsCompletelyVis) {
      GUI_SetBkColor(GUI_DARKGREEN);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Completely visible", 5, 5);
    } else {
      GUI_SetBkColor(GUI_GRAY);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Not completely visible", 5, 5);
    }
    break;
  case WM_NOTIFY_VIS_CHANGED:
    hText = WM_GetDialogItem(WM_HBKWIN, GUI_ID_TEXT1);
    hWin  = WM_GetClientWindow(pMsg->hWin);
    IsCompletelyVis     = WM_IsCompletelyVisible(hWin);
    IsCompletelyCovered = WM_IsCompletelyCovered(hWin);
    if (IsCompletelyCovered) {
      TEXT_SetText(hText, "completelyncovered");
    } else {
      TEXT_SetText(hText, "not completelyncovered");
    }
    if (_IsCompletelyVis != IsCompletelyVis) {
      _IsCompletelyVis = IsCompletelyVis;
      WM_InvalidateWindow(hWin);    /* Only required if content changes if partially hidden */
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinTest
*/
static void _cbFrameWinTest(WM_MESSAGE* pMsg) {  //--------------（7）
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_DARKRED);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  FRAMEWIN_Handle hWinVideo;
  BUTTON_Handle   hBut;
  WM_HWIN         hText;

  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  WM_SetCallback(WM_HBKWIN, _cbBkWin);
  //--------------（8）
  hText = TEXT_CreateEx(240,  85, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT0, "The clientnwindow is");
  TEXT_SetTextColor(hText, GUI_WHITE);
  hText = TEXT_CreateEx(240, 111, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT1, NULL);
  TEXT_SetTextColor(hText, GUI_WHITE);
  //
  // Create buttons
  //
  hBut = BUTTON_CreateEx(240,  5, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON0);
  BUTTON_SetText(hBut, "Create win");
  hBut = BUTTON_CreateEx(240, 25, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON1);
  BUTTON_SetText(hBut, "Delete win");
  hBut = BUTTON_CreateEx(240, 45, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON2);
  BUTTON_SetText(hBut, "Show win");
  hBut = BUTTON_CreateEx(240, 65, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON3);
  BUTTON_SetText(hBut, "Hide win");
  //
  // Create framewin video
  //
  hWinVideo = FRAMEWIN_CreateEx(5, 5, 170, 120, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Video window",
_cbFrameWinVideo);
  FRAMEWIN_SetClientColor(hWinVideo, GUI_INVALID_COLOR);
  //
  // Create test windows
  //
  _CreateWindow();
  _CreateWindow();
  _CreateWindow();
  while (1) {
    GUI_Delay(1000);
  }
}

lee_st · 2017-2-19 12:21:34

#include
#include

#include "WM.h"
#include "GUI.h"
#include "FRAMEWIN.h"
#include "BUTTON.h"
#include "TEXT.h"

static void _cbFrameWinTest(WM_MESSAGE * pMsg);

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#define MAX_WINDOWS   50

//
// Recommended memory to run the sample with adequate performance
//
#define RECOMMENDED_MEMORY (1024L * 5)

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/

static WM_HWIN _ahWin[MAX_WINDOWS];
static char    _IsCompletelyVis;

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _CreateWindow
*/
static void _CreateWindow(void) {  //--------------（1）
  unsigned i;
  WM_HWIN  hWin;
  char     ac[32];
  int      j;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] == 0) {
      j = i + 1;
      sprintf(ac, "Test window %d", j);
      hWin = FRAMEWIN_CreateEx(5 + 10 * i, 135 + 10 * i, 120, 60, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, ac,
_cbFrameWinTest);
      FRAMEWIN_SetClientColor(hWin, GUI_INVALID_COLOR);
      _ahWin[i] = hWin;
      break;
    }
  }
}

/*********************************************************************
*
*       _DeleteWindow
*/
static void _DeleteWindow(void) {  //--------------（2）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_DeleteWindow(_ahWin[i]);
      _ahWin[i] = 0;
      break;
    }
  }
}

/*********************************************************************
*
*       _ShowWindow
*/
static void _ShowWindow(void) {  //--------------（3）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (_ahWin[i] != 0) {
      if (WM_IsVisible(_ahWin[i]) == 0) {
        WM_ShowWindow(_ahWin[i]);
        break;
      }
    }
  }
}

/*********************************************************************
*
*       _HideWindow
*/
static void _HideWindow(void) {  //--------------（4）
  unsigned i;

  for (i = 0; i < MAX_WINDOWS; i++) {
    if (WM_IsVisible(_ahWin[i])) {
      WM_HideWindow(_ahWin[i]);
      break;
    }
  }
}

/*********************************************************************
*
*       Static code, callbacks
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbBkWin
*/
static void _cbBkWin(WM_MESSAGE* pMsg) {  //--------------（5）
  int Id;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    break;
  case WM_NOTIFY_PARENT:
    if (pMsg->Data.v == WM_NOTIFICATION_RELEASED) {
      Id = WM_GetId(pMsg->hWinSrc);
      switch (Id) {
      case GUI_ID_BUTTON0:
        _CreateWindow();
        break;
      case GUI_ID_BUTTON1:
        _DeleteWindow();
        break;
      case GUI_ID_BUTTON2:
        _ShowWindow();
        break;
      case GUI_ID_BUTTON3:
        _HideWindow();
        break;
      }
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinVideo
*/
static void _cbFrameWinVideo(WM_MESSAGE* pMsg) {  //--------------（6）
  WM_HWIN hWin;
  WM_HWIN hText;
  int     IsCompletelyVis;
  int     IsCompletelyCovered;

  switch (pMsg->MsgId) {
  case WM_PAINT:
    if (_IsCompletelyVis) {
      GUI_SetBkColor(GUI_DARKGREEN);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Completely visible", 5, 5);
    } else {
      GUI_SetBkColor(GUI_GRAY);
      GUI_Clear();
      GUI_SetColor(GUI_WHITE);
      GUI_DispStringAt("Not completely visible", 5, 5);
    }
    break;
  case WM_NOTIFY_VIS_CHANGED:
    hText = WM_GetDialogItem(WM_HBKWIN, GUI_ID_TEXT1);
    hWin  = WM_GetClientWindow(pMsg->hWin);
    IsCompletelyVis     = WM_IsCompletelyVisible(hWin);
    IsCompletelyCovered = WM_IsCompletelyCovered(hWin);
    if (IsCompletelyCovered) {
      TEXT_SetText(hText, "completelyncovered");
    } else {
      TEXT_SetText(hText, "not completelyncovered");
    }
    if (_IsCompletelyVis != IsCompletelyVis) {
      _IsCompletelyVis = IsCompletelyVis;
      WM_InvalidateWindow(hWin);    /* Only required if content changes if partially hidden */
    }
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbFrameWinTest
*/
static void _cbFrameWinTest(WM_MESSAGE* pMsg) {  //--------------（7）
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_DARKRED);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  FRAMEWIN_Handle hWinVideo;
  BUTTON_Handle   hBut;
  WM_HWIN         hText;

  GUI_Init();
  //
  // Check if recommended memory for the sample is available
  //
  if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
    GUI_ErrorOut("Not enough memory available.");
    return;
  }
  WM_SetCallback(WM_HBKWIN, _cbBkWin);
  //--------------（8）
  hText = TEXT_CreateEx(240,  85, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT0, "The clientnwindow is");
  TEXT_SetTextColor(hText, GUI_WHITE);
  hText = TEXT_CreateEx(240, 111, 80, 26, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT1, NULL);
  TEXT_SetTextColor(hText, GUI_WHITE);
  //
  // Create buttons
  //
  hBut = BUTTON_CreateEx(240,  5, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON0);
  BUTTON_SetText(hBut, "Create win");
  hBut = BUTTON_CreateEx(240, 25, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON1);
  BUTTON_SetText(hBut, "Delete win");
  hBut = BUTTON_CreateEx(240, 45, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON2);
  BUTTON_SetText(hBut, "Show win");
  hBut = BUTTON_CreateEx(240, 65, 75, 18, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_BUTTON3);
  BUTTON_SetText(hBut, "Hide win");
  //
  // Create framewin video
  //
  hWinVideo = FRAMEWIN_CreateEx(5, 5, 170, 120, 0, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Video window",
_cbFrameWinVideo);
  FRAMEWIN_SetClientColor(hWinVideo, GUI_INVALID_COLOR);
  //
  // Create test windows
  //
  _CreateWindow();
  _CreateWindow();
  _CreateWindow();
  while (1) {
    GUI_Delay(1000);
  }
}

lee_st · 2017-2-19 12:21:49

1.    创建FrameWin。
2.    删除FrameWin，主要是函数WM_DeleteWindow的使用。
3.    显示FrameWin，主要是函数WM_IsVisible和WM_ShowWindow的使用。
4.    隐藏FrameWin，主要是函数WM_HideWindow的使用。

lee_st · 2017-2-19 12:21:56

5.    桌面窗口回调函数，主要看WM_NOTIFY_PARENT消息，进入后再分为4个button的消息，分别实现框架窗口的创建，删除，显示和隐藏。
6.    框架窗口FrameVideo的回调函数。
7.    函数_CreateWindow里面所创建框架窗口的回调函数。
8.    （1）创建两个文本控件。
      （2）创建四个按钮，分别实现创建，删除，显示和隐藏窗口。
      （3）创建框架窗口hWinVideo。

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