Load PNG/JPEG from resource using GDI+

[gwapo]

Hi,

I've written a small function that will allow you to load JPG/PNG images from resource using GDI+:

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    gdiplusLoadBitmapFromResource, hInstance, resourceName, resourceType, outImage

    where:
       hInstance      - the module handle where to load the resource
       resourceName   - the name or the ID of the resource
       resourceType   - string pointer that will indicate the type of the resource., e.g., "PNG",0
       outImage       - address of variable where to put the handle of loaded image


Here's how to use it:

1. Add the function gdiplusLoadBitmapFromResource to your program, or include gdiplusLoadBitmapFromResource.inc.
2. Add the proto (so you can use INVOKE to call gdiplusLoadBitmapFromResource):

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gdiplusLoadBitmapFromResource proto :HMODULE, :LPSTR, :LPSTR, :DWORD


3. Initialize GDI+ on your program's start

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GdiplusStartupInput struc
    GdiplusVersion dd ?
    DebugEventCallback dd ?
    SuppressBackgroundThread BOOL ?
    SuppressExternalCodecs BOOL ?
GdiplusStartupInput ends

.data
gdiplusToken dd ?
gdiplusSInput GdiplusStartupInput <1, NULL, FALSE, FALSE>

.code
invoke GetModuleHandle, 0
mov hInstance, eax

; Initialize GDI+
invoke GdiplusStartup, addr gdiplusToken, addr gdiplusSInput, NULL


4. In your resource script, add your image with specified type, something like:

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9000 PNG "myImage.png"


where 2000 is the ID of the resource, and PNG is the type

5. Add a null-terminated string entry to your data section for the type of resource, e.g., "PNG"

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.data
    pngImage dd NULL
    pngType db "PNG", 0


6. Load the image using gdiplusLoadBitmapFromResource:

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invoke gdiplusLoadBitmapFromResource, hInstance, 9000, addr pngType, addr pngImage


7. When you're done using the image, dispose it using GdipDisposeImage function:

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invoke GdipDisposeImage, addr pngImage


8. Finally, shutdown GDI+ before you exit your program:

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invoke GdiplusShutdown, gdiplusToken


I hope you may find this useful.
See the attached sample program.

Cheers,

-chris


[attachment deleted by admin]

[Bill Cravener]

Oh I like that, thanks chris!

[Vortex]

Nice work :U

[modchip]

*Clap Clap Clap* @ chris! Thanks for sharing!  :cheekygreen: