PRB: TTM_SETTOOLINFO Does Not Subclass (154122)


The information in this article applies to:

  • Microsoft Platform Software Development Kit (SDK) 1.0
This article was previously published under Q154122

SYMPTOMS

When sending a ToolTip control a TTM_SETTOOLINFO message with the TTF_SUBCLASS flag set, the ToolTip will not subclass the specified window.

CAUSE

When it receives the TTM_SETTOOLINFO message, the ToolTip control does not check the TTF_SUBCLASS flag and never attempts to subclass the window. If the window is already subclassed, it will remain subclassed after sending the TTM_SETTOOLINFO message.

RESOLUTION

To have the ToolTip subclass a window, you must use the TTM_ADDTOOL message. If you need to change some tool information for a subclassed window, the existing window will remain subclassed.

STATUS

This behavior is by design.
Modification Type:MinorLast Reviewed:7/11/2005
Keywords:kbCtrl kbprb kbToolTip KB154122
©2004 Microsoft Corporation. All rights reserved.