Legacy ImageMagick Discussions Archive

I have been using GetImageInformation and GetConvertedImage to try figure out if my ICO contains multi layers (Using another drawing tool I know my ICO is valid and contains several resolutions) but those functions are not returning me anything. In fact I never return from those functions and my application fails silently. Do you know what function I should be calling to figure out the format of the image and whether the ICO contains multiple resolutions>
Thanks

Just identify the image. if the image contains multiple images, identify will list them.

Alternativally you can use %n in a -format to just get the number of images IM found.