The ImageList_SetOverlayImage function adds the index of an image to the list of images to be used as overlay masks. Up to four indices can be added to the list.
BOOL ImageList_SetOverlayImage(
| HIMAGELIST himl, | |
| int iImage, | |
| int iOverlay | |
| ); |
Parameters
himl
Handle to the image list.
iImage
Image to use as an overlay mask.
iOverlay
One-based index of the overlay mask.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.
Remarks
An overlay mask is an image drawn transparently over another image. You draw an overlay mask over an image by using the ImageList_Draw or ImageList_DrawEx function with the index of the overlay mask. The index must be specified by using the INDEXTOOVERLAYMASK macro.
See Also