Returns the unique ID number of the specified window.

ID := WinGetID(WinTitle, WinText, ExcludeTitle, ExcludeText)



Type: String, Integer or Object

A window title or other criteria identifying the target window. See WinTitle.


Type: String

If present, this parameter must be a substring from a single text element of the target window (as revealed by the included Window Spy utility). Hidden text elements are detected if DetectHiddenText is ON.


Type: String

Windows whose titles include this value will not be considered.


Type: String

Windows whose text include this value will not be considered.

Return Value

Type: Integer

This function returns the window handle (HWND) of the specified window. If there is no matching window, an empty string is returned.

Error Handling

An exception is thrown if the window could not be found.


This function is equivalent to WinExist.

A window's ID number is valid only during its lifetime. In other words, if an application restarts, all of its windows will get new ID numbers.

The ID of the window under the mouse cursor can be retrieved with MouseGetPos. To discover the HWND of a control (for use with PostMessage, SendMessage or DllCall), use ControlGetHwnd or MouseGetPos.

Window titles and text are case sensitive. Hidden windows are not detected unless DetectHiddenWindows has been turned on.


WinGetIDLast, ControlGetHwnd, Hwnd property (Gui object), Win functions, Control functions


#1: Maximize the active window and report its unique ID:

active_id := WinGetID("A")
WinMaximize active_id
MsgBox "The active window's ID is " active_id