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| Have you ever tried to change the BorderStyle, HideSelection, MultiLine, ScrollBars, WordWrap and TextAlign properties of a TextBox, or the ComboBox’s RightToLeft property from inside the control’s GotFocus or LostFocus events? You’ll get a System.ComponentModel.Win32Exception exception saying "Error creating window handle.". The reason is that to change these properties (and others, for other input controls) the control has to be destroyed and recreated with the new style, but this throws an exception if the operation is done while the control is processing a message/event. The solution is extremely simple, though. Just use the Enter and Leave events instead of GotFocus and LostFocus, and everything will work fine. The *probable* reason is that these new events are raised by the .NET Framework from outside the inner Windows message loop. |
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Submitted By :
Nayan Patel
(Member Since : 5/26/2004 12:23:06 PM)
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Job Description :
He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting. |
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View all (893) submissions by this author
(Birth Date : 7/14/1981 ) |
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