;-----------------------------------
;--- by superfraggle
;--- http://www.autohotkey.com/board/topic/20084-secondary-monitor/?p=180370
;
; Enables, disables or toggles a display device. 
; 
; DeviceName:   The name of the device, e.g. \\.\DISPLAY1 
;               Alternatively, it can be the index of the device, which might 
;               not be the same as the number shown in Display Settings. 
; Action:       The action to take. 
;                    0   Disable (false is synonymous with 0) 
;                    1   Enable (true is synonymous with 1) 
;                   -1   Toggle 
; NoReset:      If true, settings will be saved to the registry, but not applied. 
; 
; The following can be used to apply settings saved in the registry: 
;   DllCall("ChangeDisplaySettings", "uint", 0, "uint", 1) 
; 
; Return values: 
;    DISP_CHANGE_SUCCESSFUL       0 
;    DISP_CHANGE_RESTART          1 
;    DISP_CHANGE_FAILED          -1 
;    DISP_CHANGE_BADMODE         -2 
;    DISP_CHANGE_NOTUPDATED      -3 
;    DISP_CHANGE_BADFLAGS        -4 
;    DISP_CHANGE_BADPARAM        -5 
; 

EnableDisplayDevice(DeviceName, Action=1, NoReset=false) 
{ 
    if (Action = -1) || (DeviceName+0 != "") 
    { 
        VarSetCapacity(DisplayDevice, 424), NumPut(424, DisplayDevice, 0) 
        VarSetCapacity(ThisDeviceName, 32, 0) 
        Index = 0 
        Loop { 
            if !DllCall("EnumDisplayDevices", "UInt", 0, "UInt", A_Index-1, "UInt", &DisplayDevice, "UInt", 0) 
                return -5 
            ThisDeviceState := NumGet(DisplayDevice, 164) 
            Index += 1 
            DllCall("lstrcpynA", "Str", ThisDeviceName, "UInt", &DisplayDevice+4, "int", 32) 
            if (DeviceName = Index || DeviceName = ThisDeviceName) 
            { 
                if Action = -1 
                    Action := !(ThisDeviceState & 1) 
                DeviceName := ThisDeviceName 
                break 
            } 
        } 
    } 
    VarSetCapacity(devmode, 156, 0), NumPut(156, devmode, 36, "UShort") 
    if (Action){ 
        NumPut(0x000020, devmode, 40) ; Enable by setting position = {0,0} 
        VarSetCapacity(Point,8,0) 
        Numput(A_ScreenWidth + 1,Point) 
        Numput(&point,devmode,44) 
    } 
    else 
        NumPut(0x180020, devmode, 40) ; Disable by setting size = {0,0} 
    err := DllCall("ChangeDisplaySettingsEx", "str", DeviceName, "uint", &devmode, "uint", 0, "uint", 0x10000001, "uint", 0) 
    if !err && !NoReset 
        err := DllCall("ChangeDisplaySettings", "uint", 0, "uint", 1) 
    return err, ErrorLevel:=Action 
}

Run, RUNDLL32.EXE shell32.dll`,Control_RunDLL desk.cpl`,`,3
WinWait, Display Properties ahk_class #32770
Send, !d2!e!a ;2 stands for second monitor
Sleep, 500
Send, !e!a
WinWait, Monitor Settings ahk_class #32770
IfWinNotActive, Monitor Settings ahk_class #32770,,,,WinActivate, Monitor Settings ahk_class #32770
WinWaitActive, Monitor Settings ahk_class #32770
Send, !y
WinWaitActive, Display Properties ahk_class #32770
WinClose, Display Properties ahk_class #32770

Run DisplaySwitch.exe /internal ; первый монитор
Run DisplaySwitch.exe /external ; второй монитор
Run DisplaySwitch.exe /extend ; Dual Wiev
Run DisplaySwitch.exe /clone ; Clone