SwapYourWindow.ahk

#Requires AutoHotkey v2.0
CoordMode "Mouse", "Screen"
SetDefaultMouseSpeed 0
SetWinDelay -1
SetMouseDelay -1

+LAlt::
    {
        MouseGetPos &cur_x, &cur_y, &cur_win
        WinGetPos &cur_win_x, &cur_win_y, &cur_win_h, &cur_win_w, cur_win
        if (cur_x-cur_win_x) <= cur_win_w AND (cur_y-cur_win_y) <= 40
            {
                mouse_left_button_is_pushed := KeyWait("LButton", "D T2")
                mouse_left_button_is_released := KeyWait("LButton", "T5")
                if mouse_left_button_is_pushed AND mouse_left_button_is_released
                    {
                        WinMove cur_win_x, cur_win_y, cur_win_h, cur_win_w, cur_win
                        MouseGetPos &tar_x, &tar_y, &tar_win
                        WinGetPos &tar_win_x, &tar_win_y, &tar_win_h, &tar_win_w, tar_win
                        WinMove tar_win_x, tar_win_y, tar_win_h, tar_win_w, cur_win
                        WinMove cur_win_x, cur_win_y, cur_win_h, cur_win_w, tar_win
                        MouseMove tar_x, tar_y
                        WinMoveTop cur_win
                        WinMoveTop tar_win
                    }
            }
    }