Enlarges the specified window to its maximum size.

WinMaximize , WinTitle, WinText, ExcludeTitle, ExcludeText


WinTitle, WinText, ExcludeTitle, ExcludeText

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. By default, a window title must start with the specified WinTitle or ExcludeTitle to be a match, unless changed with SetTitleMatchMode.


Use WinRestore to unmaximize a window or WinMinimize to minimize it.

If a particular type of window does not respond correctly to WinMaximize, try using the following instead:

PostMessage, 0x0112, 0xF030,,, WinTitle, WinText  ; 0x0112 = WM_SYSCOMMAND, 0xF030 = SC_MAXIMIZE

This command operates only upon the topmost matching window except when WinTitle is ahk_group GroupName, in which case all windows in the group are affected.

WinRestore, WinMinimize


Opens Notepad, waits until it exists and maximizes it.

Run, notepad.exe
WinWait, Untitled - Notepad
WinMaximize ; Use the window found by WinWait.

Press a hotkey to maximize the active window.

^Up::WinMaximize, A  ; Ctrl+Up