Retrieves which control of the target window has keyboard focus, if any.
HWND := ControlGetFocus(WinTitle, WinText, ExcludeTitle, ExcludeText)
Type: String, Integer or Object
If each of these is blank or omitted, the Last Found Window will be used. Otherwise, specify for WinTitle a window title or other criteria to identify the target window and/or for WinText a substring from a single text element of the target window (as revealed by the included Window Spy utility).
ExcludeTitle and ExcludeText can be used to exclude one or more windows by their title or text. Their specification is similar to WinTitle and WinText, except that ExcludeTitle does not recognize any criteria other than the window title.
Window titles and text are case-sensitive. By default, hidden windows are not detected and hidden text elements are detected, unless changed with DetectHiddenWindows and DetectHiddenText; however, when using pure HWNDs, hidden windows are always detected regardless of DetectHiddenWindows. By default, a window title can contain WinTitle or ExcludeTitle anywhere inside it to be a match, unless changed with SetTitleMatchMode.
Type: Integer
This function returns the window handle (HWND) of the focused control.
If none of the target window's controls has focus, the return value is 0.
A TargetError is thrown if there is a problem determining the target window or control.
An OSError is thrown if there is a problem determining the focus.
The control retrieved by this function is the one that has keyboard focus, that is, the one that would receive keystrokes if the user were to type any.
The target window must be active to have a focused control, but even the active window may lack a focused control.
ControlFocus, Control functions