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WM_NEXTDLGCTL Overview  Group

The WM_NEXTDLGCTL message is sent to a dialog box procedure to set the keyboard focus to a different control in the dialog box.

WM_NEXTDLGCTL 

wCtlFocus = wParam;              // identifies control for focus 

fHandle = (BOOL) LOWORD(lParam); // wParam handle flag 

 

Parameters

wCtlFocus
Value of wParam. If the fHandle parameter is TRUE, the wCtlFocus parameter identifies the control that receives the focus. If fHandle is FALSE, wCtlFocus is a flag that indicates whether the next or previous control with the WS_TABSTOP style receives the focus. If wCtlFocus is zero, the next control receives the focus; otherwise, the previous control with the WS_TABSTOP style receives the focus.
fHandle
Value of lParam. Contains a flag that indicates how Windows uses the wCtlFocus parameter. If the fHandle parameter is TRUE, wCtlFocus is a handle associated with the control that receives the focus; otherwise, wCtlFocus is a flag that indicates whether the next or previous control with the WS_TABSTOP style receives the focus.

Return Values

An application should return zero if it processes this message.

Remarks

The effect of this message differs from that of the SetFocus function because WM_NEXTDLGCTL modifies the border around the control.

Do not use the SendMessage function to send a WM_NEXTDLGCTL message if your application will concurrently process other messages that set the focus. Use the PostMessage function instead.

See Also

PostMessage, SendMessage, SetFocus 

See also:


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