今天的程序主要是UCGUI的视窗管理，这点和QT的视窗管理比较类似，由于这阶段对视窗管理任务的要祈求不是很高，下面程序只是实现基本的视窗管理

#include "MainTask.h"

#define MSG_CHANGE_TEXT WM_USER+0 //用户自定义消息号，从用户可以使用的消息号0开始


#define SPEED 1250 //延时时间


static char _acInfoText[40];
static GUI_COLOR _WindowColor1 = GUI_GREEN;
static GUI_COLOR _FrameColor1  = GUI_BLUE;
static WM_CALLBACK* _cbBkWindowOld;
static WM_HWIN _hWindow1;


static void _ChangeInfoText(char* pStr) {
  WM_MESSAGE Message;
  Message.MsgId  = MSG_CHANGE_TEXT;
  Message.Data.p = pStr;
  WM_SendMessage(WM_HBKWIN, &Message); //向一个指定的窗口发送消息
  WM_InvalidateWindow(WM_HBKWIN);  //使一个指定的窗口无效，调用该函数告诉WM该窗口不更新
}


//   固定的屏幕显示
static void _DrawInfoText(char* pStr) {
  GUI_SetColor(GUI_WHITE);
  GUI_SetFont(&GUI_Font24_ASCII);
  GUI_DispStringHCenterAt("WindowManager - Sample", 160, 5);
  GUI_SetFont(&GUI_Font8x16);
  GUI_DispStringAtCEOL(pStr, 5, 40);
}


//       _LiftUp
static void _LiftUp(int dy) {
  int i, tm;
  for (i = 0; i < (dy/4); i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, 0, -4);   //窗口指定移动， x移动0，y移动-4
    while ((GUI_GetTime() - tm) < 20) {
      WM_Exec(); //通过回调函数，重绘无效窗口
    }
  }
}


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


static void _cbBkWindow(WM_MESSAGE* pMsg) {
  switch (pMsg->MsgId) {
  case MSG_CHANGE_TEXT:
    strcpy(_acInfoText, pMsg->Data.p);
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLACK);
    GUI_Clear();
    GUI_SetColor(GUI_WHITE);
    GUI_SetFont(&GUI_Font24_ASCII);
    GUI_DispStringHCenterAt("WindowManager - Sample", 160, 5);
    GUI_SetFont(&GUI_Font8x16);
    GUI_DispStringAt(_acInfoText, 5, 40);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}


//       _cbWindow1
static void _cbWindow1(WM_MESSAGE* pMsg) {
  GUI_RECT Rect;
  int x, y;
  switch (pMsg->MsgId) {
  case WM_PAINT:
    WM_GetInsideRect(&Rect);
    GUI_SetBkColor(_WindowColor1);
    GUI_SetColor(_FrameColor1);
    GUI_ClearRectEx(&Rect);
    GUI_DrawRectEx(&Rect);
    GUI_SetColor(GUI_WHITE);
    GUI_SetFont(&GUI_Font24_ASCII);
    x = WM_GetWindowSizeX(pMsg->hWin);
    y = WM_GetWindowSizeY(pMsg->hWin);
    GUI_DispStringHCenterAt("Window 1", x / 2, (y / 2)-12);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}


static void _SetDesktopColor(void) {
  GUI_SetBkColor(GUI_BLUE);
  GUI_Clear();
  _DrawInfoText("WM_SetDesktopColor()");
  GUI_Delay(SPEED*3/2);
  WM_SetDesktopColor(GUI_BLACK);
  GUI_Delay(SPEED/2);
  /* Set background color and invalidate desktop color.
     This is needed for the later redrawing demo. */
  GUI_SetBkColor(GUI_BLACK);
  WM_SetDesktopColor(GUI_INVALID_COLOR);
}


static void _CreateWindow(void) {
  /* Set callback for background window */
  _cbBkWindowOld = WM_SetCallback(WM_HBKWIN, _cbBkWindow);
  /* Create windows */
  _ChangeInfoText("WM_CreateWindow()");
  GUI_Delay(SPEED);
  _hWindow1 = WM_CreateWindow( 50,  70, 165, 100, WM_CF_SHOW | WM_CF_MEMDEV, _cbWindow1, 0);  //窗口创建
  GUI_Delay(SPEED);
}


static void _InvalidateWindow(void) {
  _ChangeInfoText("WM_InvalidateWindow()");
  _WindowColor1 = GUI_BLUE;
  _FrameColor1  = GUI_GREEN;
  GUI_Delay(SPEED);
  WM_InvalidateWindow(_hWindow1);
  GUI_Delay(SPEED);
}


static void _BringToTop(void) {
  _ChangeInfoText("WM_BringToTop()");
  GUI_Delay(SPEED);
  WM_BringToTop(_hWindow1);    
  GUI_Delay(SPEED);
}


static void _MoveTo(void) {
  int i, tm, tDiff;
  _ChangeInfoText("WM_MoveTo()");
  GUI_Delay(SPEED);
  for (i = 1; i < 56; i++) {
    tm = GUI_GetTime();
    WM_MoveTo(_hWindow1,  50 + i,  70 + i);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 1; i < 56; i++) {
    tm = GUI_GetTime();
    WM_MoveTo(_hWindow1, 105 - i, 125 - i);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED);
}


static void _BringToBottom(void) {
  _ChangeInfoText("WM_BringToBottom()");
  GUI_Delay(SPEED);
  WM_BringToBottom(_hWindow1);
  GUI_Delay(SPEED);
}


static void _MoveWindow(void) {
  int i, tm, tDiff;
  _ChangeInfoText("WM_MoveWindow()");
  GUI_Delay(SPEED);
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1,  1,  1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 55; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hWindow1, -1, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED);
}


static void _DeleteWindow(void) {
  _ChangeInfoText("WM_DeleteWindow()");
  GUI_Delay(SPEED);
  WM_DeleteWindow(_hWindow1);
  GUI_Delay(SPEED);
  _ChangeInfoText("");
  GUI_Delay(SPEED);
  /* Restore background callback and window colors */
  WM_SetCallback(WM_HBKWIN, _cbBkWindowOld);
  _WindowColor1 = GUI_GREEN;
}


void gui_wm(void)
{
   GUI_SetBkColor(GUI_BLACK);
  WM_SetCreateFlags(WM_CF_MEMDEV);
  WM_EnableMemdev(WM_HBKWIN);
  while (1) {
    _SetDesktopColor();
    _CreateWindow();
    _InvalidateWindow();
    _BringToTop(); //置顶 用于有重叠的窗口
    _MoveTo();
    _BringToBottom(); //置底 用于有重叠的窗口
    _MoveWindow();
    _LiftUp(20);
_LiftDown(20);
_DeleteWindow();
  }
}

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