AnimateWindow && Dev-C++ problems

This is a discussion on AnimateWindow && Dev-C++ problems within the Windows Programming forums, part of the Platform Specific Boards category; So i'm trying to use the AnimateWindow() function to animate a static control i have, but the compiler is spouting ...

  1. #1
    Shibby willc0de4food's Avatar
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    AnimateWindow && Dev-C++ problems

    So i'm trying to use the AnimateWindow() function to animate a static control i have, but the compiler is spouting out errors like thats its job. ^_^ i've downloaded the v3.6 win api from devpaks.org and i've linked libuser32.a to my project, but it still acts like it doesn't know what i'm talking about. my code is:
    Code:
    case ID_BUTTON1:
                     {
                          AnimateWindow(GetDlgItem(hwnd, ID_LEFT), 1000, AW_SLIDE | AW_VER_POSITIVE);
                     }
                     break;
    and the errors are
    main.c: In function `WndProc':

    main.c:153: error: `AW_SLIDE' undeclared (first use in this function)
    main.c:153: error: (Each undeclared identifier is reported only once
    main.c:153: error: for each function it appears in.)
    main.c:153: error: `AW_VER_POSITIVE' undeclared (first use in this function)
    also, i found a post that had a similar problem on the board and they defined the functions and such so i copied this code:
    Code:
    #define AW_HOR_POSITIVE 0x00000001 
    #define AW_HOR_NEGATIVE 0x00000002 
    #define AW_VER_POSITIVE 0x00000004 
    #define AW_VER_NEGATIVE 0x00000008 
    #define AW_SLIDE 0x00040000 
    
    typedef BOOL (WINAPI *lpfnAnimateWindow)(HWND hwnd, DWORD dwTime, DWORD dwFlags); 
    lpfnAnimateWindow AnimateWindow;
    and then it compiled just fine, but if i try to run it it crashes when i press the button.


    ideas? thanks
    Last edited by willc0de4food; 03-13-2006 at 03:19 AM.
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  2. #2
    erstwhile
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    >>i've downloaded the v3.6 win api<<

    Good.

    >>a similar problem on the board and they defined the functions<<

    Almost there. If you open up winuser.h and see how those are defined, you'll see they are defined within a preprocessor conditional block (WINVER as the condition), so to use them you need to #define WINVER 0x0500 (at least - see Using the Windows Headers) for your project.
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  3. #3
    Shibby willc0de4food's Avatar
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    weird...i tried defining winver in my program and it said it was already defined in winuser.h, but it was defined as 0x0400 so i just changed the 4 to a 5 and it compiles. however, it doesn't animate the window. i created the controls and load the images in them in the WM_CREATE case
    Code:
    bRpsLR[0] = (HBITMAP)LoadImage(GetModuleHandle(0), MAKEINTRESOURCE(RPS_LEFT), IMAGE_BITMAP, 200, 150, 0);
    bRpsLR[1] = (HBITMAP)LoadImage(GetModuleHandle(0), MAKEINTRESOURCE(RPS_RIGHT), IMAGE_BITMAP, 200, 150, 0);
    for (i = 0; i < 2; i++)
    {
        SendMessage(GetDlgItem(hwnd, i+407), STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)bRpsLR[i]);
    }
    and that works. and when i check GetLastError() it tells me "AnimateWindow failed with error 0: The operation completed successfully." so i'm thinking i'm not doing something right..? lol

    thanks :]



    // i just tried changing my AW_SLIDE | AW_VER_POSITIVE to AW_HIDE | AW_CENTER and that worked. what i want it to do is even though the control is already there, i'd like it to go away and then slide in from the top. ? lol
    Last edited by willc0de4food; 03-13-2006 at 11:13 AM.
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  4. #4
    erstwhile
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    >>it said it was already defined<<

    You're getting an error about it already being defined because you're probably attempting to define it after winuser.h is #included rather than before. It's always a much better idea to define such macros on a per project basis rather than just shoving in a #define somewhere in your code where you think it might be appropriate.

    To do this with dev-cpp go into project options-->parameters and set the macro in the compiler field with the -D switch, eg.
    Code:
    -DWINVER=0x0500
    If you still get the error about its prior definition (I doubt you will, though) then you can undefine it first with the -U switch.

    >>so i just changed the 4 to a 5<<

    This is a very bad idea - you shouldn't go changing stuff in these headers unless you've identified a bug and intend to submit a patch which I am reasonably certain won't be the case here. If you absolutely must make changes then at least keep a copy of the original so you can restore it/use it if need be.
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  5. #5
    Shibby willc0de4food's Avatar
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    sweet.

    i undid the change i made in my winuser.h file and added the parameter to the compiler and it compiles. thanks for the help
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