BUG: OLE 2.0 Does Not Support CF_OWNERDISPLAY

If an application places a data transfer object onto the clipboard and that data object enumerates CF_OWNERDISPLAY as one of the clipboard formats, the application will not receive the WM_PAINTCLIPBOARD message.

The WM_PAINTCLIPBOARD message is sent to the clipboard owner in order to paint the clipboard viewer window. After performing an OleSetClipboard, clipboard ownership belongs to the OLE libraries. Because no window handle information is passed with OleSetClipboard, the OLE libraries cannot forward this message to the calling application.

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.