Filters out a message before it is dispatched.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)] bool PreFilterMessage( ref Message m )
- Type: System.Windows.Forms.Message%
The message to be dispatched. You cannot modify this message.
Return ValueType: System.Boolean
true to filter the message and stop it from being dispatched; false to allow the message to continue to the next filter or control.
Use to filter out a message before it is dispatched to a control or form. For example, to stop the Click event of a Button control from being dispatched to the control, you implement the method and return a true value when the Click message occurs. You can also use this method to perform code work that you might need to do before the message is dispatched.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.