This function adds a specified image to the list of images to be used as overlay masks. An image list can have up to four overlay masks. The function assigns an overlay mask index to the specified image.
At a Glance
| Header file: | Commctrl.h |
| Windows CE versions: | 1.0 and later |
Syntax
BOOL WINAPI ImageList_SetOverlayImage(HIMAGELIST himl,
int iImage, int iOverlay);
Parameters
himl
[in] Handle to the image list.
iImage
[in] Zero-based index of an image in the himl image list. This index identifies the image to use as an overlay mask.
iOverlay
[in] One-based index of the overlay mask.
Return Values
Nonzero indicates success. Zero indicates failure.
Remarks
An overlay mask is an image drawn transparently over another image. To draw an overlay mask over an image, call the ImageList_Draw or ImageList_DrawEx function. The fStyle parameter of these functions can use the INDEXTOOVERLAYMASK macro to specify an overlay mask index.