mouse event when resizing window

This is a discussion on mouse event when resizing window within the Windows Programming forums, part of the Platform Specific Boards category; Hi I want a message box pops up after resizing window, but not during resizing it. I tried with Code: ...

  1. #1
    Registered User
    Join Date
    Sep 2001
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    173

    mouse event when resizing window

    Hi

    I want a message box pops up after resizing window, but not during resizing it.

    I tried with
    Code:
    case  WM_LBUTTONDOWN:
      message = FALSE;
      return 0;
    
    case WM_LBUTTONUP: 
      showData = TRUE;
      return 0;
    
    /*...*/
    
    case WM_PAINT:
       if(message)
         MessageBox(0,"the window got resized","ok",MB_OK);
     return 0;
    but it never worked, what can I do for it, thanks!!
    Don't laugh at me,I am just a SuperNewbie.

  2. #2
    It's full of stars adrianxw's Avatar
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    Posts
    4,831
    Whilst the user is resizing the window it is sent a stream of WM_SIZING messages. When the resizing operation is complete, it is sent a WM_SIZE message. Process these if you want to respond to resizing events.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  3. #3
    Registered User
    Join Date
    Sep 2001
    Posts
    173
    Thanks, but it always sends a message to WM_SIZE even when I am resizing it.

    All I want is just not updating window until I stop resizing it. any other way else?
    Last edited by SuperNewbie; 05-19-2004 at 04:39 AM.
    Don't laugh at me,I am just a SuperNewbie.

  4. #4
    Yes, my avatar is stolen anonytmouse's Avatar
    Join Date
    Dec 2002
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    2,544
    Give WM_EXITSIZEMOVE a try.

  5. #5
    Registered User
    Join Date
    Sep 2001
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    173
    Thanks, it seems ok, but I met some problems:

    Code:
    case WM_EXITSIZEMOVE:
           showData = TRUE;
          return 0;
    
    case WM_PAINT:
      
            hdc = BeginPaint (hwnd, &ps) ;
            GetClientRect (hwnd, &rect) ;
           if(showData)
          {
               Ellipse(hdc, 100, 100, 109, 109);
    			   	  
          }
      
          showData = FALSE;
    
        EndPaint (hwnd, &ps) ;
    			   
        return 0 ;
    it still didn't show the ellipse, seems WM_PAINT message has been sent serveral times after WM_EXITSIZEMOVE, but therotically, WM_PAINT only is called once in my mind, what's wrong with it !!
    Don't laugh at me,I am just a SuperNewbie.

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