how to set a background as a image?

This is a discussion on how to set a background as a image? within the Windows Programming forums, part of the Platform Specific Boards category; hi is there some one out there who would know how to a set a background image in win32 api.thanks...

  1. #1
    Registered User Rare177's Avatar
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    how to set a background as a image?

    hi is there some one out there who would know how to a set a background image in win32 api.thanks

  2. #2
    C++ Developer XSquared's Avatar
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    Code:
    SystemParametersInfo( SPI_SETDESKWALLPAPER, 0, "C:\\wallpaper.jpg", 0 );
    http://msdn.microsoft.com/library/de...metersinfo.asp
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

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  3. #3
    Registered User Rare177's Avatar
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    sorry
    i ment for the actual program like a bitmap file , not the desktop

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    Semi n00b Mithoric's Avatar
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    Easiest way is to do it in the registering of the window class

    wncl.hbrBackground = CreatePatternBrush( LoadBitmap( hInstance, MAKEINTRESOURCE( your_bitmap ) ) );

  5. #5
    Registered User Rare177's Avatar
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    Code:
      wincl.hbrBackground = CreatePatternBrush( LoadBitmap( hThisInstance, MAKEINTRESOURCE(BACKGROUND) ) );
    this did not work

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    Bear in mind that under Win9x, CreatePatternBrush will only use a max 8x8 bitmap for a pattern brush. If compatibility with this platform is required, then modification of the window's WM_PAINT message will be necessary (Some BitBlting required).

  7. #7
    erstwhile
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    Bear in mind that under Win9x, CreatePatternBrush will only use a max 8x8 bitmap for a pattern brush
    CreatePatternBrush is ok for win98; it's only win95 that limits the size to 8x8.
    this did not work
    This doesn't help us to help you. If you got an error what error was reported?
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  8. #8
    Registered User Rare177's Avatar
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    i didnt get a error and im on XP
    its just not showing the picture
    and yes its all setup right in the resource file

  9. #9
    erstwhile
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    There are two likely problems then:

    1. hThisInstance is not valid. Try using GetModuleHandle(0) instead.

    2. You're passing a string resource identifier to MAKEINTRESOURCE rather than a short int resource identifier (check value of 'BACKGROUND' - substitute in the numerical value in place of MAKEINTRESOURCE(...) in your LoadBitmap call.

    If that fails to identify the source of the problem then it might be a good idea to break the bitmap and brush creation line into separate parts, checking the return values from LoadBitmap and CreatePatternBrush to check for non-NULL values. If either is NULL then use GetLastError to give you some better idea of why.
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  10. #10
    Registered User Rare177's Avatar
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    Code:
    wincl.hbrBackground = CreatePatternBrush( LoadBitmap( GetModuleHandle(0), MAKEINTRESOURCE(700) ) );
    did not work it compiled and still nothing

  11. #11
    erstwhile
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    Quote Originally Posted by Ken Fitlike
    If that fails to identify the source of the problem then it might be a good idea to break the bitmap and brush creation line into separate parts, checking the return values from LoadBitmap and CreatePatternBrush to check for non-NULL values. If either is NULL then use GetLastError to give you some better idea of why.
    ...and the result of trying that is...?
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  12. #12
    Registered User Rare177's Avatar
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    well i dont get a background or color it just paints wat window was over it say if explorer was over it then it will paint what was over it.
    sorry on the late reply

  13. #13
    Registered User Rare177's Avatar
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    Code:
    #include <windows.h>
    #include "manifest.h"
    
    MANIFEST_RESOURCE_ID  MANIFEST "client.exe.manifest"
    
    500 ICON "main.ico"
    600 ICON "app.ico"
    800 ICON "tray.ico"
    700 BACKGROUND BITMAP "background.bmp"
    i have it defined as
    Code:
    #define BACKGROUND 700
    up the top
    when i open it it paints the current window that was above the app
    say if i have msn messenger over it.it will paint that to it.please help.thanks

  14. #14
    Yes, my avatar is stolen anonytmouse's Avatar
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    Code:
    700 BACKGROUND BITMAP "background.bmp"
    should be:
    Code:
    700 BITMAP "background.bmp"
    or
    Code:
    BACKGROUND BITMAP "background.bmp"
    --
    Typically, we create a header file "resource.h" with:
    Code:
    #define IDI_APPICON 1001
    #define IDI_TRAYICON 1002
    #define IDB_BACKGROUND 2001
    and then we #include that file in both the resource file and the project:
    Code:
    #include <windows.h>
    #include "resource.h"
    
    IDI_APPICON ICON "app.ico"
    IDI_TRAYICON ICON "tray.ico"
    IDB_BACKGROUND BITMAP "background.bmp"
    The numbers are only used once, in the header file.

  15. #15
    Registered User Rare177's Avatar
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    ah thanks so much it works!!
    much apreciated

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