ImageList_AddMasked info  Overview  Group

The ImageList_AddMasked function adds an image or images to an image list, generating a mask from the specified bitmap.

int ImageList_AddMasked(

HIMAGELIST himl,	// handle to the image list
HBITMAP hbmImage,	// handle to the bitmap
COLORREF crMask	// color used to generate mask
);

Parameters

himl

Handle to the image list.

hbmImage

Handle to the bitmap that contains one or more images. The number of images is inferred from the width of the bitmap.

crMask

Color used to generate the mask. Each pixel of this color in the specified bitmap is changed to black, and the corresponding bit in the mask is set to one.

Return Values

If the function succeeds, the return value is the index of the first new image.

If the function fails, the return value is - 1.

Remarks

The ImageList_AddMasked function copies the bitmap to an internal data structure. Be sure to use the DeleteObject function to delete hbmImage and crMask after the function returns.

See Also

DeleteObject