源码如下（程序中进行了详细的注释）：
复制代码
----------------------------------------------------------------------
File : WIDGET_Menu.c
Purpose : Shows how to work with menu widget
Requirements: WindowManager - (x)
MemoryDevices - (x)
AntiAliasing - ( )
VNC-Server - ( )
PNG-Library - ( )
TrueTypeFonts - ( )
----------------------------------------------------------------------
*/
#include
#include "GUI.h"
#include "DIALOG.h"
#include "MENU.h"
#include "MESSAGEBOX.h"
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
#define ID_MENU (GUI_ID_USER + 0)
#define ID_MENU_FILE_NEW (GUI_ID_USER + 1)
#define ID_MENU_FILE_OPEN (GUI_ID_USER + 2)
#define ID_MENU_FILE_CLOSE (GUI_ID_USER + 3)
#define ID_MENU_FILE_EXIT (GUI_ID_USER + 4)
#define ID_MENU_FILE_RECENT (GUI_ID_USER + 5)
#define ID_MENU_RECENT_0 (GUI_ID_USER + 6)
#define ID_MENU_RECENT_1 (GUI_ID_USER + 7)
#define ID_MENU_RECENT_2 (GUI_ID_USER + 8)
#define ID_MENU_RECENT_3 (GUI_ID_USER + 9)
#define ID_MENU_EDIT_UNDO (GUI_ID_USER + 10)
#define ID_MENU_EDIT_REDO (GUI_ID_USER + 11)
#define ID_MENU_EDIT_COPY (GUI_ID_USER + 12)
#define ID_MENU_EDIT_PASTE (GUI_ID_USER + 13)
#define ID_MENU_EDIT_DELETE (GUI_ID_USER + 14)
#define ID_MENU_HELP_ABOUT (GUI_ID_USER + 15)
/*********************************************************************
*
* Static data
*
**********************************************************************
*/
static WM_HWIN _hMenu;
static WM_HWIN _hText;
static WM_HWIN _hFrame;
static char * _paDescription[] = {
"Creates a new file",
"Opens an existing file",
"Closes the file",
"Quits the application",
"",
"Opens file 1",
"Opens file 2",
"Opens file 3",
"Opens file 4",
"Undoes the last action",
"Redoes the previously undone action",
"Copies to clipboard",
"Inserts contents of clipboard",
"Deletes the selection",
"Displays program information"
};
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* _AddMenuItem
*/
static void _AddMenuItem(MENU_Handle hMenu, MENU_Handle hSubmenu, const char* pText, U16 Id, U16 Flags) {
MENU_ITEM_DATA Item;
Item.pText = pText;
Item.hSubmenu = hSubmenu;
Item.Flags = Flags;
Item.Id = Id;
MENU_AddItem(hMenu, &Item);
}
/*********************************************************************
*
* _CreateMenu
* 创建菜单控件
*/
static WM_HWIN _CreateMenu(WM_HWIN hParent) {
MENU_Handle hMenu;
MENU_Handle hMenuFile;
MENU_Handle hMenuEdit;
MENU_Handle hMenuHelp;
MENU_Handle hMenuRecent;
//
// Create main menu
//
hMenu = MENU_CreateEx(0, 0, 0, 0, WM_UNATTACHED, 0, MENU_CF_HORIZONTAL, ID_MENU);
//
// Create sub menus
//
hMenuFile = MENU_CreateEx(0, 0, 0, 0, WM_UNATTACHED, 0, MENU_CF_VERTICAL, 0);
hMenuEdit = MENU_CreateEx(0, 0, 0, 0, WM_UNATTACHED, 0, MENU_CF_VERTICAL, 0);
hMenuHelp = MENU_CreateEx(0, 0, 0, 0, WM_UNATTACHED, 0, MENU_CF_VERTICAL, 0);
hMenuRecent = MENU_CreateEx(0, 0, 0, 0, WM_UNATTACHED, 0, MENU_CF_VERTICAL, 0);
//
// Add menu items to menu 'Recent'
//
_AddMenuItem(hMenuRecent, 0, "File 1", ID_MENU_RECENT_0, 0);
_AddMenuItem(hMenuRecent, 0, "File 2", ID_MENU_RECENT_1, 0);
_AddMenuItem(hMenuRecent, 0, "File 3", ID_MENU_RECENT_2, 0);
_AddMenuItem(hMenuRecent, 0, "File 4", ID_MENU_RECENT_3, 0);
//
// Add menu items to menu 'File'
//
_AddMenuItem(hMenuFile, 0, "New", ID_MENU_FILE_NEW, 0);
_AddMenuItem(hMenuFile, 0, "Open", ID_MENU_FILE_OPEN, 0);
_AddMenuItem(hMenuFile, 0, "Close", ID_MENU_FILE_CLOSE, MENU_IF_DISABLED);
_AddMenuItem(hMenuFile, 0, 0, 0, MENU_IF_SEPARATOR);
_AddMenuItem(hMenuFile, hMenuRecent, "Files...", ID_MENU_FILE_RECENT, 0);
_AddMenuItem(hMenuFile, 0, 0, 0, MENU_IF_SEPARATOR);
_AddMenuItem(hMenuFile, 0, "Exit", ID_MENU_FILE_EXIT, 0);
//
// Add menu items to menu 'Edit'
//
_AddMenuItem(hMenuEdit, 0, "Undo", ID_MENU_EDIT_UNDO, 0);
_AddMenuItem(hMenuEdit, 0, "Redo", ID_MENU_EDIT_REDO, 0);
_AddMenuItem(hMenuEdit, 0, 0, 0, MENU_IF_SEPARATOR);
_AddMenuItem(hMenuEdit, 0, "Copy", ID_MENU_EDIT_COPY, 0);
_AddMenuItem(hMenuEdit, 0, "Paste", ID_MENU_EDIT_PASTE, 0);
_AddMenuItem(hMenuEdit, 0, "Delete", ID_MENU_EDIT_DELETE, 0);
//
// Add menu items to menu 'Help'
//
_AddMenuItem(hMenuHelp, 0, "About", ID_MENU_HELP_ABOUT, 0);
//
// Add menu items to main menu
//
_AddMenuItem(hMenu, hMenuFile, "File", 0, 0);
_AddMenuItem(hMenu, hMenuEdit, "Edit", 0, 0);
_AddMenuItem(hMenu, hMenuHelp, "Help", 0, 0);
//
// Attach menu to parent window
//
FRAMEWIN_AddMenu(hParent, hMenu);
return hMenu;
}
/*********************************************************************
*
* _DrawGradientV
* 实现垂直的颜色梯度
*/
static void _DrawGradientV(int x0, int y0, int x1, int y1, GUI_COLOR Color0, GUI_COLOR Color1) {
int r0;
int g0;
int b0;
int r1;
int g1;
int b1;
int y;
int ySize;
int r;
int g;
I32 b;
int Diff;
ySize = y1 - y0 + 1;
r0 = (Color0 >> 0) & 0x000000ff;
g0 = (Color0 >> 8) & 0x000000ff;
b0 = (Color0 >> 16) & 0x000000ff;
r1 = (Color1 >> 0) & 0x000000ff;
g1 = (Color1 >> 8) & 0x000000ff;
b1 = (Color1 >> 16) & 0x000000ff;
for (y = y0; y <= y1; y++) {
GUI_COLOR Color;
Diff = y - y0;
r = r0 + (r1 - r0) * Diff / ySize;
g = g0 + (g1 - g0) * Diff / ySize;
b = b0 + (b1 - b0) * Diff / ySize;
Color = r | (g << 8) | (b << 16);
GUI_SetColor(Color);
GUI_DrawHLine(y, x0, x1);
}
}
/*********************************************************************
*
* _MessageBox
* 创建并执行模态的消息框
*/
static void _MessageBox(const char * pText, const char * pCaption) {
WM_HWIN hBox;
hBox = MESSAGEBOX_Create(pText, pCaption, GUI_MESSAGEBOX_CF_MODAL | GUI_MESSAGEBOX_CF_MOVEABLE);
WM_SetStayOnTop(hBox, 1);
WM_BringToTop(hBox);
GUI_ExecCreatedDialog(hBox);
WM_SetFocus(_hMenu);
MENU_SetSel(_hMenu, -1);
}
/*********************************************************************
*
* _cbClient
* 框架窗口的回调函数
*/
static void _cbClient(WM_MESSAGE * pMsg) {
char acBuffer[50];
int Index;
int xSize;
int ySize;
int xPos;
int yPos;
WM_HWIN hWin;
WM_HWIN hClient;
MENU_MSG_DATA * pData;
MENU_ITEM_DATA Data;
hWin = pMsg->hWin;
hClient = WM_GetClientWindow(hWin);
xSize = WM_GetWindowSizeX(hClient);
ySize = WM_GetWindowSizeY(hClient);
switch (pMsg->MsgId) {
case WM_SIZE:
//
// 如果改变窗口控件大小的话，这里是重新设置文本控件的位置。
//
xPos = WM_GetWindowOrgX(hClient);
yPos = WM_GetWindowOrgY(hClient);
WM_SetWindowPos(_hText, xPos + 4, yPos + ySize - 10, xSize, 10);
WM_SetWindowPos(_hMenu, xPos , yPos , xSize, WM_GetWindowSizeY(_hMenu));
TEXT_SetText(_hText, "Ready");
break;
case WM_PAINT:
//
// 绘制框架窗口中用户区部分的背景
//
_DrawGradientV(0, 0, xSize - 1, ySize - 12 - 1, GUI_WHITE, GUI_LIGHTBLUE);
GUI_SetColor(GUI_LIGHTGRAY);
GUI_FillRect(0, ySize - 12, xSize - 1, ySize - 1);
GUI_SetTextMode(GUI_TM_TRANS);
GUI_SetColor(GUI_BLACK);
GUI_SetFont(&GUI_Font24B_ASCII);
GUI_DispStringHCenterAt(
"MENU widget sample"
, xSize / 2, 40);
GUI_SetFont(&GUI_Font16B_ASCII);
GUI_DispStringHCenterAt(
"The sample shows how to use the MENUn"
"widget. Use the keyboard or the pointern"
"input device for playing with the widget.n"
"On highlighting a menu item the statusn"
"bar shows a small description. On selectingn"
"a menu item a message box will be shown."
, xSize / 2, 70);
break;
case WM_MENU:
pData = (MENU_MSG_DATA*)pMsg->Data.p;
switch (pData->MsgType) {
case MENU_ON_ITEMPRESSED:
//按下菜单项之后，将发送此消息给小工具的所有者窗口。对于
//已禁用的菜单项，也将发送此消息
MENU_GetItem(pMsg->hWinSrc, pData->ItemId, &Data);
if (Data.Flags & MENU_IF_DISABLED) {
_MessageBox("The pressed item was disabled", "Message");
}
break;
case MENU_ON_ITEMACTIVATE:
//
// 菜单项被高亮显示之后，菜单的所有者窗口将收到此消息。将
// 子菜单高亮显示之后，则不会发送此消息
//
Index = pData->ItemId - ID_MENU_FILE_NEW;
if (Index >= 0) {
TEXT_SetText(_hText, _paDescription[pData->ItemId - ID_MENU_FILE_NEW]);
} else {
TEXT_SetText(_hText, "Ready");
}
break;
case MENU_ON_ITEMSELECT:
//
// 选择菜单项之后将立即发送此消息给菜单的所有者。ItemId
// 元素包含已按下的菜单项的Id。
sprintf(acBuffer, "ID of the selectednitem is 0x%X", pData->ItemId);
_MessageBox(acBuffer, "Message");
break;
}
}
WM_DefaultProc(pMsg);
}
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* MainTask
*/
void MainTask(void) {
int xSize;
int ySize;
WM_HWIN hClient;
GUI_Init();
//
// 通过下面两个函数使能所有窗口使用内存设备
//
#if GUI_SUPPORT_MEMDEV
WM_SetCreateFlags(WM_CF_MEMDEV);
WM_EnableMemdev(WM_HBKWIN);
#endif
WM_SetDesktopColor(GUI_BLACK);
MENU_SetDefaultEffect(&WIDGET_Effect_3D1L);
//
// 创建框架窗口
//
_hFrame = FRAMEWIN_CreateEx(10, 10, 300, 220, WM_HBKWIN, WM_CF_SHOW, FRAMEWIN_CF_MOVEABLE, 0, "Application with menu", _cbClient);
FRAMEWIN_SetFont(_hFrame, &GUI_Font13_ASCII);
FRAMEWIN_AddMaxButton(_hFrame, FRAMEWIN_BUTTON_RIGHT, 0); /* 添加框架窗口最大化按钮 */
FRAMEWIN_AddMinButton(_hFrame, FRAMEWIN_BUTTON_RIGHT, 2); /* 添加框架窗口最小化按钮 */
//
// 创建菜单控件
//
_hMenu = _CreateMenu(_hFrame);
//
// 创建文本控件
//
hClient = WM_GetClientWindow(_hFrame);
xSize = WM_GetWindowSizeX(hClient);
ySize = WM_GetWindowSizeY(hClient);
_hText = TEXT_CreateEx(4, ySize - 10, xSize, 10, hClient, WM_CF_SHOW, 0, GUI_ID_TEXT0, "Ready");
TEXT_SetFont(_hText, &GUI_Font8_ASCII);
//
// 创建菜单控件
//
WM_SetFocus(_hMenu);
MENU_SetSel(_hMenu, -1);
while (1) {
GUI_Delay(100);
}
}
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