Load PNG/JPEG from resource using GDI+

Hi,

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

Code:

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):

Code:

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

3. Initialize GDI+ on your program's start

Code:

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:

Code:

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"

Code:

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

6. Load the image using gdiplusLoadBitmapFromResource:

Code:

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

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

Code:

invoke GdipDisposeImage, addr pngImage

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

Code:

invoke GdiplusShutdown, gdiplusToken

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

Cheers,

-chris