Specifies the handle of the wallpaper control (if any) that is used to paint the background of the dialog or dialog element. The background is automatically redrawn if the wallpaper control used is changed or modified. If the wallpaper control is deleted, the WALLPAPER attribute of the dialog or dialog element is automatically reset to NULL-HANDLE.

Any parts of the dialog or dialog element's background that are not covered by the wallpaper (if any) are painted using the color specified by the BACKGROUND-COLOUR-NAME or BACKGROUND-COLOUR-VALUE attributes. A value of NULL-HANDLE for the wallpaper attribute indicates that no wallpaper should be used.

Applies to	Control box control, dialog (all types), dialog bar control, list view control, tab control.
Data Type	HANDLE
Default Value	NULL-HANDLE
Possible Values	Handle of existing wallpaper control or NULL-HANDLE.