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OFFXP: Custom MouseIcon Property for FM20 Control Can Leak GDI Handles
Article ID: 822768 - View products that this article applies to.
When you use Microsoft Forms 2.0 Controls (FM20) with Office XP or with another Microsoft Visual Basic for Applications (VBA) host application, you may notice a leak in the Graphics Device Interface (GDI) handles if you use the MouseIcon property to change the mouse cursor for a control to a custom cursor. When the property is updated with a new icon, or the control is reloaded as a user form, or a document is closed and then reopened, a pair of handles can be leaked for the process. The handles are not reclaimed until the host application shuts down. If the application is left running for a long time, the system may run low on resources, and you may notice GDI draw problems or low memory errors as they interact with the host application. For Microsoft Office applications, this typically occurs when a document that contains an FM20 control with a custom cursor is opened and closed repeatedly.
When you set the MouseIcon property to a custom cursor, FM20 converts the StdPicture object that is passed by the caller to internal bitmaps (one for the image, another for the icon mask). As these images are applied to form the mouse cursor during a focus or during a mouse event, one or both handles may be leaked.
Service Pack InformationThis problem is corrected in Office XP Service Pack 3.To resolve this problem, obtain the latest service pack for Microsoft Office XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/307841/ )How to obtain the latest Office XP Service Pack
How to Obtain the HotfixThis issue is fixed in the Office XP Post-Service Pack 2: Hotfix Rollup Package July 3, 2003. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/822342/ )Availability of the Office XP Post-Service Pack 2 Hotfix Rollup Package: July 3, 2003
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. : This problem was first corrected in Office XP Service Pack 3.