_FrameColor1  = GUI_GREEN;
  GUI_Delay(SPEED);
  WM_InvalidateWindow(_hWindow1);
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoBringToTop

  Demonstrates the use of WM_BringToTop
*/
static void _DemoBringToTop(void) {
  _ChangeInfoText("WM_BringToTop()");
  GUI_Delay(SPEED);
  WM_BringToTop(_hWindow1);    
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoMoveTo

  Demonstrates the use of WM_MoveTo
*/
static void _DemoMoveTo(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);
    WM_MoveTo(_hWindow2, 105 - i, 125 - 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);
    WM_MoveTo(_hWindow2,  50 + i,  70 + i);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoBringToBottom

  Demonstrates the use of WM_BringToBottom
*/
static void _DemoBringToBottom(void) {
  _ChangeInfoText("WM_BringToBottom()");
  GUI_Delay(SPEED);
  WM_BringToBottom(_hWindow1);
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoMoveWindow

  Demonstrates the use of WM_MoveWindow
*/
static void _DemoMoveWindow(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);
    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);
}

/*******************************************************************
*
*       _DemoHideShowParent

  Demonstrates the use of WM_HideWindow and WM_ShowWindow
*/
static void _DemoHideShowParent(void) {
  _ChangeInfoText("WM_HideWindow(Parent)");
  GUI_Delay(SPEED);
  WM_HideWindow(_hWindow2);
  GUI_Delay(SPEED/3);
  WM_HideWindow(_hWindow1);
  GUI_Delay(SPEED);
  _ChangeInfoText("WM_ShowWindow(Parent)");
  GUI_Delay(SPEED);
  WM_ShowWindow(_hWindow1);
  GUI_Delay(SPEED/3);
  WM_ShowWindow(_hWindow2);
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoHideShowChild

  Demonstrates the use of WM_HideWindow and WM_ShowWindow
*/
static void _DemoHideShowChild(void) {
  _ChangeInfoText("WM_HideWindow(Child)");
  GUI_Delay(SPEED);
  WM_HideWindow(_hChild);
  GUI_Delay(SPEED);
  _ChangeInfoText("WM_ShowWindow(Child)");
  GUI_Delay(SPEED);
  WM_ShowWindow(_hChild);
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoClipping

  Demonstrates clipping at parent borders
*/
static void _DemoClipping(void) {
  int i, tm, tDiff;
  _ChangeInfoText("Demonstrating clipping of child");
  GUI_Delay(SPEED);
  for (i = 0; i < 25; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hChild,  1,  0);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 25; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hChild,  0,  1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 50; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hChild, -1,  0);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 25; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hChild,  0, -1);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  for (i = 0; i < 25; i++) {
    tm = GUI_GetTime();
    WM_MoveWindow(_hChild,  1,  0);
    tDiff = 15 - (GUI_GetTime() - tm);
    GUI_Delay(tDiff);
  }
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoRedrawing

  Demonstrates how useful can be a callback
*/
static void _DemoRedrawing(void) {
  int i, tm, 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);
}

/*******************************************************************
*
*       _DemoResizeWindow

  Demonstrates the use of WM_ResizeWindow
*/
static void _DemoResizeWindow(void) {
  int i, tm,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);
}

/*******************************************************************
*
*       _DemoSetCallback

  Demonstrates the use of WM_SetCallback
*/
static void _DemoSetCallback(void) {
  _ChangeInfoText("WM_SetCallback()");
  GUI_Delay(SPEED);
  WM_SetCallback(_hWindow1, _cbDemoCallback1);
  WM_InvalidateWindow(_hWindow1);
  GUI_Delay(SPEED/2);
  WM_SetCallback(_hWindow2, _cbDemoCallback2);
  WM_InvalidateWindow(_hWindow2);
  GUI_Delay(SPEED*3);
  WM_SetCallback(_hWindow1, _cbWindow1);
  WM_InvalidateWindow(_hWindow1);
  GUI_Delay(SPEED/2);
  WM_SetCallback(_hWindow2, _cbWindow2);
  WM_InvalidateWindow(_hWindow2);
  GUI_Delay(SPEED);
}

/*******************************************************************
*
*       _DemoDeleteWindow

  Demonstrates the use of WM_DeleteWindow
*/
static void _DemoDeleteWindow(void) {
  _ChangeInfoText("WM_DeleteWindow()");
  GUI_Delay(SPEED);
  WM_DeleteWindow(_hWindow2);
  GUI_Delay(SPEED/3);
  WM_DeleteWindow(_hWindow1);
  GUI_Delay(SPEED);
  _ChangeInfoText("");
  GUI_Delay(SPEED);
  /* Restore background callback and window colors */
  WM_SetCallback(WM_HBKWIN, _cbBkWindowOld);
  _WindowColor1 = GUI_GREEN;
  _WindowColor2 = GUI_RED;
}

/*******************************************************************
*
*       MainTask
*
*       Demonstrates the use of the window manager
*
********************************************************************
*/

void MainTask(void) {
  GUI_Init();
  GUI_SetBkColor(GUI_BLACK);
  WM_SetCreateFlags(WM_CF_MEMDEV);
  WM_EnableMemdev(WM_HBKWIN);
  while (1) {
    _DemoSetDesktopColor();
    _DemoCreateWindow();
    _DemoCreateWindowAsChild();
    _DemoInvalidateWindow();
    _DemoBringToTop();
    _DemoMoveTo();
    _DemoBringToBottom();
    _DemoMoveWindow();
    _DemoHideShowParent();
    _DemoHideShowChild();
    _DemoClipping();
    _DemoRedrawing();
    _DemoResizeWindow();
    _DemoSetCallback();
    _DemoDeleteWindow();
  }
}