Force Ctrl+F1 to behave like Ctrl+Tab

[Andrus]

MDI WinForms 2 application.
I need that Ctrl+F1 cycles through windows like Ctrl+Tab and Ctrl+Tab is
redefined.
I overrided MDI child form OnKeypress method but Ctrl+F1 press is ignored.
For unknown reason base.ProcessCmdKey calls method itself.

How to fix ?

Andrus.

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
switch (keyData)
{
case Keys.Control | Keys.Tab:
// ... custom processing occurs hear.
return true;

case Keys.Control | Keys.F1:
keyData = Keys.Control | Keys.Tab ;
break;
}
return base.ProcessCmdKey(ref msg, keyData);
}