[ucgui] 子窗口父窗口

 

它创建了3个窗口:

• 第一个作为桌面的子窗口
• 第二个作为第一个窗口的子窗口
• 第三个作为第二个窗口的子窗口

窗口创建后，使用WM_ForEachDesc()在其父窗口中移动各个窗口：

static void _cbWin(WM_MESSAGE * pMsg) {
    GUI_COLOR Color;
    switch (pMsg->MsgId) {
        case WM_PAINT:
        WM_GetUserData(pMsg->hWin, &Color, 4);
        GUI_SetBkColor(Color);
        GUI_Clear();
        break;
        default:
        WM_DefaultProc(pMsg);
    }
}
/*********************************************************************
*
* _cbDoSomething
*/
static void _cbDoSomething(WM_HWIN hWin, void * p) {
    int Value = *(int *)p;
    WM_MoveWindow(hWin, Value, Value);
}
/*********************************************************************
*
* MainTask
*/
void Fun(void) {
    WM_HWIN hWin_1, hWin_2, hWin_3;
    int Value = 10;
    GUI_COLOR aColor[] = {GUI_RED, GUI_GREEN, GUI_BLUE};
    GUI_Init();
    WM_SetDesktopColor(GUI_BLACK);
    hWin_1 = WM_CreateWindow( 10, 10, 100, 100, WM_CF_SHOW, _cbWin, 4);
    hWin_2 = WM_CreateWindowAsChild(10, 10, 80, 80, hWin_1, WM_CF_SHOW, _cbWin, 4);
    hWin_3 = WM_CreateWindowAsChild(10, 10, 60, 60, hWin_2, WM_CF_SHOW, _cbWin, 4);
    WM_SetUserData(hWin_1, &aColor[0], 4);
    WM_SetUserData(hWin_2, &aColor[1], 4);
    WM_SetUserData(hWin_3, &aColor[2], 4);
    while (1) {
        WM_ForEachDesc(WM_HBKWIN, _cbDoSomething, (void *)&Value);
        Value *= -1;
        GUI_Delay(500);
    }
}

• 前两个为回调函数，Fun函数为主函数，建立3个窗口
• WM_HWIN WM_CreateWindow(int x0, int y0,
  int width, int height,
  U8 Style, WM_CALLBACK * cb
  int NumExtraBytes);
• WM_HWIN WM_CreateWindowAsChild(int x0, int y0,
  int width, int height,
  WM_HWIN hWinParent,
  U8 Style,
  WM_CALLBACK* cb
  int NumExtraBytes);
• void WM_ForEachDesc(WM_HWIN hWin, WM_tfForEach * pcb, void * pData);