Knowledge Base

BUG: OLE 2.0 Does Not Support CF_OWNERDISPLAY

Article ID: 109552

Article Last Modified on 12/3/2003

Microsoft OLE 2.01
Microsoft OLE 4.0, when used with:
- Microsoft Windows NT 4.0
- Microsoft Windows NT 3.51 Service Pack 5
- Microsoft Windows 95

This article was previously published under Q109552

SYMPTOMS

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.

CAUSE

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.

STATUS

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

Additional query words: 2.01 3.50 4.00 kbbuglist

Keywords: kbbug KB109552