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.NET Forum / Windows Forms / WinForm General / January 2007ControlDesigner OnMouseDragMove only called once?
I am playing with overriding the ControlDesigner OnMouseDragMove. But for some reason it only appears to get called when a control just begins its drag. I was anticipating it to be called for every movement of the mouse during the drag. Am I missing something so that this method is only called once? Is there another method I should be using that will be called for each movement of the mouse? That is the correct method. Can you post some sample code? -- Bryan Phillips MCSD, MCDBA, MCSE Blog: http://bphillips76.spaces.live.com > I am playing with overriding the ControlDesigner OnMouseDragMove. But for > some reason it only appears to get called when a control just begins its > drag. I was anticipating it to be called for every movement of the mouse > during the drag. Am I missing something so that this method is only called > once? Is there another method I should be using that will be called for > each movement of the mouse? Nothing too exciting: [System.Security.Permissions.PermissionSet( System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust" )] public class PadDesigner : System.Windows.Forms.Design.ControlDesigner { protected override void OnMouseDragMove( int x, int y ) { System.Diagnostics.Trace.WriteLine( string.Format( "{0}, {1}", x, y ) ); base.OnMouseDragMove( x, y ); } } > That is the correct method. Can you post some sample code? > [quoted text clipped - 11 lines] >> once? Is there another method I should be using that will be called for >> each movement of the mouse? It happens the same way for me. I drag and it is called 3 or 4 times and quits. I overrode the WndProc and checked for the WM_MOUSEMOVE and WM_NCMOUSEMOVE messages and they seem to stop too. It looks like the Windows message just stop. -- Bryan Phillips MCSD, MCDBA, MCSE Blog: http://bphillips76.spaces.live.com > Nothing too exciting: > [quoted text clipped - 24 lines] > >> once? Is there another method I should be using that will be called for > >> each movement of the mouse? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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