HDM_CREATEDRAGIMAGE message

Creates a semi-transparent version of an item's image for use as a dragging image. You can send this message explicitly or use the Header_CreateDragImage macro.

Parameters

wParam

The zero-based index of the item within the header control. The image assigned to this item is the basis for the transparent image.

lParam

Must be zero.

Return value

Returns a handle to an image list that contains the new image as its only element.

Requirements