Overriding a Procedure in a Parent from a child control

Question

I'm developing this usercontrol which requires I override the WndProc of the control's parent [which for all practical purposes is a Windows Form] and I'm stumped.

Ordinarily, I could drop the user on the form and manually override the forms WndProc. Since my entire development team and possibly others I don't know of right now could be using it, I think it would be better I override from the UserControl.

Does anyone know how I can get this done? My preferred languages are VB.NET and C#.

Answer 1

You might try NativeWindow, getting a reference to the parent form via this.FindForm().

That is,

public class MyListener : NativeWindow
{
     public MyListener(UserControl myControl)
     {
         this.AssignHandle(myControl.FindForm().Handle);
     }

     protected override void WndProc(ref Message m)
     {
          // do stuff
          base.WndProc(ref m);
     }

     // dispose, etc.
}

Inheriting from NativeWindow in this way would let you intercept the Windows messages.

Good luck!