WinWait

Waits until the specified window exists.

WinWait [, WinTitle, WinText, Seconds, ExcludeTitle, ExcludeText]

Parameters

WinTitle	The title or partial title of the target window (the matching behavior is determined by SetTitleMatchMode). To use a window class, specify ahk_class ExactClassName (shown by Window Spy). To use a process identifier (PID), specify ahk_pid %VarContainingPID%. To use a window group, specify ahk_group GroupName. The search can be narrowed by specifying multiple criteria. For example: My File.txt ahk_class Notepad
WinText	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.
Seconds	How many seconds to wait before timing out and setting ErrorLevel to 1. Leave blank to wait indefinitely. Specifying 0 is the same as specifying 0.5. This parameter can be an expression.
ExcludeTitle	Windows whose titles include this value will not be considered.
ExcludeText	Windows whose text include this value will not be considered.

ErrorLevel

ErrorLevel is set to 1 if the command timed out or 0 otherwise.

Remarks

If a matching window comes into existence, the command will not wait for Seconds to expire. Instead, it will immediately set ErrorLevel to 0, update the Last Found Window, and the script will continue executing.

While the command is in a waiting state, new threads can be launched via hotkey, custom menu item, or timer.

If another thread changes the contents of any variable(s) that were used for this command's parameters, the command will not see the change -- it will continue to use the title and text that were originally present in the variables when the command first started waiting.

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

Example

Run, notepad.exe
WinWait, Untitled - Notepad, , 3
if ErrorLevel <> 0
{
	MsgBox, WinWait timed out.
	return
}
else
	WinMinimize  ; Minimize the window found by WinWait.