Run("notepad.exe")
Sleep(1000) ; chờ notepad bật

$pid = ProcessExists("notepad.exe") ; lấy process id
$hwnd = _ProcessGetWinEx($pid) ; lấy win handle từ process

MsgBox(0, "", WinGetTitle($hwnd)) ; title

Func _ProcessGetWinEx($ivPid, $svClass = "", $svTitle = "", $svText = "", $ivReturnOnlyFirstMatch = True)

    $ivPid = ProcessExists($ivPid)
    If Not $ivPid Then Return(SetError(1, 0, 0))

    Local $avwArray = WinList()
    Local $avRet[1] = [0]

    For $i = 1 To $avwArray[0][0]
        $avClass = DllCall("User32.dll", "int", "GetClassName", "hwnd", $avwArray[$i][1], "str", "", "int", 4096)
        If WinGetProcess($avwArray[$i][1]) = $ivPid Then
            If $svClass = "" Or (IsArray($avClass) And $avClass[2] = $svClass) Then
                If ($svTitle = "" Or StringInStr($avwArray[$i][0], $svTitle)) And ($svText = "" Or StringInStr(WinGetText($avwArray[$i][1]), $svText)) Then
                    $avRet[0] += 1
                    ReDim $avRet[$avRet[0]+1]
                    $avRet[$avRet[0]] = $avwArray[$i][1]
                    If $ivReturnOnlyFirstMatch Then
                        $avRet = $avret[1]
                        ExitLoop
                    EndIf
                EndIf
            EndIf
        EndIf
    Next

    Return $avRet

EndFunc