Hi,

I've got a dialog box implemented as a Windows Form under .NET 2.0, in C#.  If I open the dialog with myForm.ShowDialog(), everything works great.  But, I need the form to be non-modal, so that my users can continue to interact with the main app while the dialog is open.  So instead, I open it with myForm.Show(), or myForm.Show(parentWin), and in both of those cases, I lose the TAB key, it no longer moves focus around the dialog.

I've seen some talk of non-Forms windows using IsDialogMessage() to process the Tab key and other dialog-specific messages.  But I can't find the equivalent thing to do in Windows Forms.  Any advice?  Thanks!

This will happen when some other message loop is dispatching messages.  A common problem if you use Windows Forms in a 3rd party program.  There's no fix for this, only when Windows Forms pumps the message loop (Application.Run() or Form.ShowDialog()) will keyboard shortcuts and tabbing work properly.  Review this MSDN article for a possible workaround.

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Hans Passant.

This will happen when some other message loop is dispatching messages.  A common problem if you use Windows Forms in a 3rd party program.  There's no fix for this, only when Windows Forms pumps the message loop (Application.Run() or Form.ShowDialog()) will keyboard shortcuts and tabbing work properly.  Review this MSDN article for a possible workaround.

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Hans Passant.