Log the PID of an active window

[Bharadwaj7895]

Hi, I am new to Autohotkey. I want to log the PID of active window whenever I do switch between processes using ALT+TAB or mouse click. For instance, each time I switch between notepad and mozilla firefox I want to log the PID of active window in excel or notepad or wherever. Is there any way to achieve it?


Edit: Topic subject line added ~ gregster

[Osprey]

It sounds like you need a loop that waits until the current window is no longer active. This quick example should get you started:

Code: Select all

Loop
{
  WinGetActiveTitle, ActiveWindow						; Store the currently active window's title in ActiveWindow
  WinGet, ActiveWinPID, PID, %ActiveWindow%				; Get the PID for the currently active window
  FileAppend, %ActiveWinPID%=%ActiveWindow%`n, log.txt	; Write the PID to a log file
  WinWaitNotActive, %ActiveWindow%						; Wait for the window to no longer be active
}