STM_SETIMAGE

An application sends an STM_SETIMAGE message to associate a new image (icon or bitmap) with a static control.

STM_SETIMAGE 

wParam = (WPARAM) fImageType;       // image-type flag 

lParam = (LPARAM) (HANDLE) hImage;  // handle of the image

Parameters

fImageType: Value of wParam. Specifies the type of image to associate with the static control. This parameter can be one of the following values:
IMAGE_BITMAP
IMAGE_CURSOR
IMAGE_ENHMETAFILE
IMAGE_ICON
hImage: Value of lParam. Identifies the image to associate with the static control.

The return value is the handle of the image previously associated with the static control, if any; otherwise, it is NULL.