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(win32) Getting the dimensions of an icon file?

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I'm loading an icon with
HICON icon = (HICON)LoadImage(0, file.c_str(), IMAGE_ICON, 16, 16, LR_LOADFROMFILE|LR_SHARED);
I want to find the dimensions of the .ico file before loading it with the LoadImage function. Thanks

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Actually I don't think this will work well if the icon has multiple images (which is likely the case). The documentation says that if you set cxDesired and cyDesired to 0 (and not use the LR_DEFAULTSIZE flag), the actual resource size is used, but for icons with multiple images, the first one is used, which is typically the smallest I think. If you know your icons will have one image only, use this method. Otherwise, I'm not sure how you can do this (please share if you find out how).

One method that I just thought of to load the largest image in the icon would be to do something like this:

INT aDimentions[] =
{ 256, 128, 64, 48, 32, 24, 16 };
for( UINT i=0; i<sizeof(aDimensions)/sizeof(INT), i++ )
hIcon = (HICON)LoadImage( 0, sFileName, IMAGE_ICON,
aDimensions, aDimensions, LR_LOADFROMFILE );
if( hIcon )
break; // Icon loaded with size aDimensionsxaDimensions.

But I'm not sure if that would work; I didn't try it.

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