33.4 指针输入设备(PID)类型消息实例 基于上面的例子,我们实现一下PID类型消息WM_MOUSEOVER,代码如下(可以直接复制到模拟器上面运行或者开发板上面):
- #include
- #include "GUI.h"
- #include "DIALOG.h"
-
- #include "WM.h"
- #include "BUTTON.h"
- #include "CHECKBOX.h"
- #include "DROPDOWN.h"
- #include "EDIT.h"
- #include "FRAMEWIN.h"
- #include "LISTBOX.h"
- #include "MULTIEDIT.h"
- #include "RADIO.h"
- #include "SLIDER.h"
- #include "TEXT.h"
- #include "PROGBAR.h"
- #include "SCROLLBAR.h"
- #include "LISTVIEW.h"
-
-
- /*********************************************************************
- *
- * static data
- *
- **********************************************************************
- */
- GUI_COLOR _acColor[3] = {GUI_BLUE,GUI_RED,GUI_YELLOW}; (1)
- static unsigned char ucBackColor; (2)
-
-
- /*********************************************************************
- *
- * Dialog resource
- *
- * This table conatins the info required to create the dialog.
- * It has been created by ucGUIbuilder.
- */
-
- static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
- { FRAMEWIN_CreateIndirect, "armfly", 0, 0, 0, 800,480,FRAMEWIN_CF_MOVEABLE,0},
- { BUTTON_CreateIndirect, "BUTTON0", GUI_ID_BUTTON0, 82, 122,162,37, 0,0},
- { BUTTON_CreateIndirect, "BUTTON1", GUI_ID_BUTTON1, 357,123,152,35, 0,0}
- };
-
- /*****************************************************************
- ** FunctionName:void PaintDialog(WM_MESSAGE * pMsg)
- ** Function: to initialize the Dialog items
- **
- ** call this function in _cbCallback --> WM_PAINT
- *****************************************************************/
-
- void PaintDialog(WM_MESSAGE * pMsg)
- {
- WM_HWIN hWin = pMsg->hWin;
- GUI_SetBkColor(_acColor[ucBackColor]);(3)
- GUI_Clear();
- }
-
- /*****************************************************************
- ** FunctionName:void InitDialog(WM_MESSAGE * pMsg)
- ** Function: to initialize the Dialog items
- **
- ** call this function in _cbCallback --> WM_INIT_DIALOG
- *****************************************************************/
-
- void InitDialog(WM_MESSAGE * pMsg)
- {
- WM_HWIN hWin = pMsg->hWin;
- //
- //FRAMEWIN
- //
- FRAMEWIN_SetFont(hWin,&GUI_Font24B_ASCII);(4)
- FRAMEWIN_SetTextAlign(hWin,GUI_TA_VCENTER|GUI_TA_CENTER);
- FRAMEWIN_AddCloseButton(hWin, FRAMEWIN_BUTTON_RIGHT, 0);
- FRAMEWIN_AddMaxButton(hWin, FRAMEWIN_BUTTON_RIGHT, 1);
- FRAMEWIN_AddMinButton(hWin, FRAMEWIN_BUTTON_RIGHT, 2);
- FRAMEWIN_SetTitleHeight(hWin,30);
-
- /* 默认颜色取*/
- ucBackColor = 0;(5)
- }
-
- /*********************************************************************
- *
- * Dialog callback routine
- */
- static void _cbCallback(WM_MESSAGE * pMsg)
- {
- int NCode, Id;
- WM_HWIN hWin = pMsg->hWin;
- switch (pMsg->MsgId)
- {
- case WM_MOUSEOVER:(6)
- ucBackColor++;
- if (ucBackColor == 3)
- {
- ucBackColor = 0;
- }
- WM_InvalidateWindow(hWin);
- break;
- case WM_PAINT:
- PaintDialog(pMsg);
- break;
- case WM_INIT_DIALOG:
- InitDialog(pMsg);
- break;
- case WM_KEY:
- switch (((WM_KEY_INFO*)(pMsg->Data.p))->Key)
- {
- case GUI_KEY_ESCAPE:
- GUI_EndDialog(hWin, 1);
- break;
- case GUI_KEY_ENTER:
- GUI_EndDialog(hWin, 0);
- break;
- }
- break;
- case WM_NOTIFY_PARENT:
- Id = WM_GetId(pMsg->hWinSrc);
- NCode = pMsg->Data.v;
- switch (Id)
- {
- case GUI_ID_OK:
- if(NCode==WM_NOTIFICATION_RELEASED)
- GUI_EndDialog(hWin, 0);
- break;
- case GUI_ID_CANCEL:
- if(NCode==WM_NOTIFICATION_RELEASED)
- GUI_EndDialog(hWin, 0);
- break;
- case GUI_ID_BUTTON0:
- switch(NCode)
- {
- case WM_NOTIFICATION_CLICKED:
-
- break;
- case WM_NOTIFICATION_RELEASED:
-
- break;
- case WM_NOTIFICATION_MOVED_OUT:
-
- break;
- }
- break;
- case GUI_ID_BUTTON1:
- switch(NCode)
- {
- case WM_NOTIFICATION_CLICKED:
-
- break;
- case WM_NOTIFICATION_RELEASED:
-
- break;
- case WM_NOTIFICATION_MOVED_OUT:
-
- break;
- }
- break;
-
- }
- break;
- default:
- WM_DefaultProc(pMsg);
- }
- }
-
-
- /*********************************************************************
- *
- * MainTask
- *
- **********************************************************************
- */
- void MainTask(void)
- {
- GUI_Init();
- WM_SetDesktopColor(GUI_BLUE); /* Automacally update desktop window */
- WM_SetCreateFlags(WM_CF_MEMDEV); /* Use memory devices on all windows to avoid flicker */
- PROGBAR_SetDefaultSkin(PROGBAR_SKIN_FLEX);
- FRAMEWIN_SetDefaultSkin(FRAMEWIN_SKIN_FLEX);
- PROGBAR_SetDefaultSkin(PROGBAR_SKIN_FLEX);
- BUTTON_SetDefaultSkin(BUTTON_SKIN_FLEX);
- CHECKBOX_SetDefaultSkin(CHECKBOX_SKIN_FLEX);
- DROPDOWN_SetDefaultSkin(DROPDOWN_SKIN_FLEX);
- SCROLLBAR_SetDefaultSkin(SCROLLBAR_SKIN_FLEX);
- SLIDER_SetDefaultSkin(SLIDER_SKIN_FLEX);
- HEADER_SetDefaultSkin(HEADER_SKIN_FLEX);
- RADIO_SetDefaultSkin(RADIO_SKIN_FLEX);
- GUI_ExecDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), &_cbCallback, 0, 0, 0);
- }
复制代码
1. 定义一个数组,里面有三种颜色。 2. 定义一个变量,用于上面三种颜色的切换。 3. 在WM_PAINT消息中实现重绘,主要用于实现对话框用户区的颜色重绘。 4. 在WM_INIT_DIALOG消息中初始化对话框中的控件,这里初始化了FrameWin。 5. 初始化背景颜色的初始值_acColor[ucBackColor]。 6. 这里加入了消息WM_MOUSEOVER,这个消息的功能是指针输入设备接触到窗口轮廓时发送到窗口。仅在启用鼠标支持时发送。在这个消息里面切换对话框的背景色变量,然后调用函数WM_InvalidateWindow,一旦调用这个函数就会去执行此对话框的WM_PAINT消息。 这个例子的实际显示效果如下:
PID类型的其它消息,大家可以在模拟器上面做一个简单的测试,后面用到的时候还会跟大家详细讲解。
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