CODEWITHSUNDEEP
autohotkey
SuitUp
SuitUp

Reputation: 3182

How to get window handle by PID in autohotkey?

I want to get window handle by PID in autohotkey, because title of the window is always changing. If anyone wonder, I want to get handle of last.fm main window.

Upvotes: 1

Views: 11162

Answers (3)

Honest Abe
Honest Abe

Reputation: 8748

You can use the WinGet command with the Cmd paramter as ID.

Cmd is the operation to perform, which if blank defaults to ID.
ID: Retrieves the unique ID number of a window. Also known as the window handle (HWND).

WinTitle can be a PID.

WinGet, UniqueID, ID, ahk_pid %VarContainingPID%

Another option is WinExist()

UniqueID := WinExist("ahk_pid" . VarContainingPID)

Upvotes: 0

bn880
bn880

Reputation: 111

To get the first window Class/ID of a PID you can do the following:

Process, Exist, "notepad.exe"
NewPID = %ErrorLevel%  ; Save the value immediately since ErrorLevel is often changed.
if NewPID
{ ; process exists!
    WinGetClass, ClassID, ahk_pid %NewPID%   ; ClassID will be read here for the process
    WinGetTitle, Title, ahk_pid %NewPID% ; Title will contain the processe's first window's title
    IfWinExist ahk_class %ClassID% ; this will find the first window by the ClassID
    {
        WinGet, WinID, ID ; this will get the ID of the window into WinID variable
        WinActivate ; this will bring this window to front (not necessary for example)  
        ListVars ; this will display your variables
        Pause
    }
    IfWinExist %Title% ; this will find the first window with the window title
    {
        WinGet, WinID, ID
        WinActivate ; this will bring this window to front (not necessary for example)  
        ListVars
        Pause
    }
}

there are other methods to convert the PID other than IfWinExist I'm sure, and it is possible to have more than one process with same class ID. :) Additionally you can use

Upvotes: 8

Mike Viens
Mike Viens

Reputation: 2507

As a reusable function:

getHwndForPid(pid) {
    pidStr := "ahk_pid " . pid
    WinGet, hWnd, ID, %pidStr%
    return hWnd
}

Upvotes: 1

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