Catching the 'Enter' Key in windows and controls

In order to catch the "Enter" key, and other special keys in a CListCtrl (or any control for that matter) it is necessary to derive your own class and add a handler for the WM_GETDLGCODE message. To allow all special keys to be processed by the control add the following:

UINT SMUPPGrid::OnGetDlgCode()
{ 
	UINT result = CListCtrl::OnGetDlgCode();
	result = result | DLGC_WANTALLKEYS;
	return result;
}

Other options include (from MSDEV documentation):

• DLGC_WANTALLKEYS: All keyboard input.
• DLGC_WANTARROWS: Arrow keys.
• DLGC_WANTCHARS: WM_CHAR messages.
• DLGC_WANTMESSAGE: All keyboard input. The application passes this message on to the control.
• DLGC_WANTTAB: TAB key.
• DLGC_BUTTON: Button (generic).
• DLGC_DEFPUSHBUTTON: Default pushbutton.
• DLGC_HASSETSEL: EM_SETSEL messages.
• DLGC_UNDEFPUSHBUTTON: No default pushbutton processing. (An application can use this flag with DLGC_BUTTON to indicate that it processes button input but relies on the system for default pushbutton processing.)
• DLGC_RADIOBUTTON: Radio button.
• DLGC_STATIC: Static control.

This is a relatively simple process but it is not really all that intuitive or well documented.

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