Screen Resolution Changing UDF

[PartyPooper]

Glad you liked it and it works for you.

[madflame991]

PartyPooper hi all wokks but the code will not exit

Same for me... please try to fix it

[PartyPooper]

Same for me... please try to fix it

Little more info please like what OS are you using, is it the compiled version that doesn't work or the code itself, which version of AutoIt etc.

[Wooltown]

Works nice on Win 2000 SP 4, English version !

[james3mg]

Sorry to resurrect an old post again, but...

Works well on Vista sp1 as well! Nice job.

My only issue is with multiple monitors, it only affects my primary monitor. I looked at the EnumDisplaySettings on msdn and tried to switch the device call so it might also work with my secondary monitor, but no dice. Any ideas how one would go about modifying this to support an additional display device?

Thanks

Edited December 17, 2008 by james3mg

[PartyPooper]

Not off the top of my head but I know there are several topics on multiple monitors on here that may be useful. Unfortunately, I don't run multiple monitors at the moment.

[DangerousDan]

Same for me... please try to fix it

in response to the script not exiting/remaining in system tray.

comment out lines 62 and 63

;~              DllCall($dll, "int", "SendMessage", "hwnd", $HWND_BROADCAST, "int", $WM_DISPLAYCHANGE, _
;~                      "int", $i_BitsPP, "int", $i_Height * 2 ^ 16 + $i_Width)

that's what was making the function hang for me on Vista SP1.

on another note: for some reason Vista constantly resets my screen res to 1024x768 after it resumes from suspend mode... I wrote a script to keep in the quick launch bar until I can figure it out lol.

[PsaltyDS]

A modification using ChangeDisplaySettingsEx, so that specific display instances can be targeted:

From bobchernow in Multiple monitor change resolution:

OK, Here goes. This is my first UDF so be gentle.

expandcollapse popup

#include-once
;===============================================================================
; Function Name:    _ChangeScreenResEx()
; Description:    Changes the current screen geometry, colour and refresh rate.
; Version:        1.0.0.0
; Parameter(s):  $i_DisplayNum - Display to change, starting at 1
;                  $i_Width - Width of the desktop screen in pixels. (horizontal resolution)
;                  $i_Height - Height of the desktop screen in pixels. (vertical resolution)
;                   $i_BitsPP - Depth of the desktop screen in bits per pixel.
;                   $i_RefreshRate - Refresh rate of the desktop screen in hertz.
; Requirement(s):   AutoIt Beta > 3.1
; Return Value(s):  On Success - Screen is adjusted, @ERROR = 0
;                  On Failure - sets @ERROR = 1
; Forum(s):      
; Author(s):        Original code - psandu.ro, PartyPooper
;                  Modifications - bobchernow
;===============================================================================
Func _ChangeScreenResEx($i_DisplayNum = 1, $i_Width = @DesktopWidth, $i_Height = @DesktopHeight, $i_BitsPP = @DesktopDepth, $i_RefreshRate = @DesktopRefresh)
    Local Const $DM_PELSWIDTH = 0x00080000
    Local Const $DM_PELSHEIGHT = 0x00100000
    Local Const $DM_BITSPERPEL = 0x00040000
    Local Const $DM_DISPLAYFREQUENCY = 0x00400000
    Local Const $CDS_TEST = 0x00000002
    Local Const $CDS_UPDATEREGISTRY = 0x00000001
    Local Const $DISP_CHANGE_RESTART = 1
    Local Const $DISP_CHANGE_SUCCESSFUL = 0
    Local Const $HWND_BROADCAST = 0xffff
    Local Const $WM_DISPLAYCHANGE = 0x007E
    If $i_Width = "" Or $i_Width = -1 Then $i_Width = @DesktopWidth; default to current setting
    If $i_Height = "" Or $i_Height = -1 Then $i_Height = @DesktopHeight; default to current setting
    If $i_BitsPP = "" Or $i_BitsPP = -1 Then $i_BitsPP = @DesktopDepth; default to current setting
    If $i_RefreshRate = "" Or $i_RefreshRate = -1 Then $i_RefreshRate = @DesktopRefresh; default to current setting
    Local $DEVMODE = DllStructCreate("byte[32];int[10];byte[32];int[6]")
    Local $s_Display
    
    $s_Display = "\\.\Display" & $i_DisplayNum
    
    Local $B = DllCall("user32.dll", "int", "EnumDisplaySettings", "ptr", 0, "int", 0, "ptr", DllStructGetPtr($DEVMODE))
    
    If @error Then
        $B = 0
        SetError(1)
        Return $B
    Else
        $B = $B[0]
    EndIf
    If $B <> 0 Then
        DllStructSetData($DEVMODE, 2, BitOR($DM_PELSWIDTH, $DM_PELSHEIGHT, $DM_BITSPERPEL, $DM_DISPLAYFREQUENCY), 5)
        DllStructSetData($DEVMODE, 4, $i_Width, 2)
        DllStructSetData($DEVMODE, 4, $i_Height, 3)
        DllStructSetData($DEVMODE, 4, $i_BitsPP, 1)
        DllStructSetData($DEVMODE, 4, $i_RefreshRate, 5)
    
        $B = DllCall("user32.dll", "int", "ChangeDisplaySettingsEx","str", $s_Display, "ptr", DllStructGetPtr($DEVMODE), "hwnd", 0, "dword", $CDS_TEST, "lparam", 0)
        If @error Then
            $B = -1
        Else
            $B = $B[0]
        EndIf
        Select
            Case $B = $DISP_CHANGE_RESTART
                $DEVMODE = ""
                Return 2
            Case $B = $DISP_CHANGE_SUCCESSFUL
                DllCall("user32.dll", "int", "ChangeDisplaySettingsEx","str", $s_Display, "ptr", DllStructGetPtr($DEVMODE), "hwnd", 0, "dword", $CDS_UPDATEREGISTRY, "lparam", 0)
                DllCall("user32.dll", "int", "SendMessage", "hwnd", $HWND_BROADCAST, "int", $WM_DISPLAYCHANGE, _
                        "int", $i_BitsPP, "int", $i_Height * 2 ^ 16 + $i_Width)
                $DEVMODE = ""
                Return 1
            Case Else
                $DEVMODE = ""
                SetError(1)
                Return $B
        EndSelect
    EndIf
EndFunc;==>_ChangeScreenResEx

And here is what I have been using to test it.

#include <ChangeResolutionEx.au3>

_ChangeScreenResEx(1,1024,600,-1,-1)
_ChangeScreenResEx(2,1680,1050,-1,-1)

I am still struggling with the DetachMonitorEx.Au3 UDF but I hope to get that working soon. It seems to involve mucking with the $DEVMODE flags and then calling the ChangeDisplaySettingsEx twice, but it is not working as of now.

Bob

[WorknMan]

Hey guys,

I can use this au3 file to change to any resolution I've tried except for 1152x864. If I try it, I get the error that says can't change resolution - check parameters.

I can switch to this resolution via the Display properties (Winxp SP3), so not sure why it doesn't work in the script? Is there something hard-coded in the au3 file to only allow certain resolutions?

EDIT: n/m, works on another PC, so it's obviously something specific with the monitor.

Edited January 29, 2009 by WorknMan

[bobchernow]

Hey guys,

I can use this au3 file to change to any resolution I've tried except for 1152x864. If I try it, I get the error that says can't change resolution - check parameters.

I can switch to this resolution via the Display properties (Winxp SP3), so not sure why it doesn't work in the script? Is there something hard-coded in the au3 file to only allow certain resolutions?

EDIT: n/m, works on another PC, so it's obviously something specific with the monitor.

Are you working on a single monitor or on multiple monitor system?

[maison09]

Thanks a lot for your sharing

maison de credit

Edited April 18, 2009 by maison09

[catcat]

I am a new commer, I want to have more information

simulation assurance vie

[jaenster]

here it dont work, Dont care witch res i set.

(Win XP PRO SP3)

[AlienStar]

hello everybody

how can add a condition for this script ????

I mean :

if ( width <= 800 ^ Height <= 600 ) change to 1024x768 and even if one of them ( width or height ) was <= last value also change to 1024x768

I mean I wanna the width > 800 and the height > 600

but if the resolution was bigger than 800x600 for example (1152x864) don't do any thing

thanks so much

Edited August 11, 2009 by AlienStar

[PartyPooper]

Have a read about @DesktopHeight and @DesktopWidth in the help file.

[TheGeneral]

How can i change a monitor to primary, through dll call?

There's any possibility to change the default sound output through the same method?

[pitchalov]

Inspired by original thread. All credit should go to psandu.ro, I just converted his code into a UDF and modified it slightly.

Hi,

I am new to this forum and AutoIt in general. I discovered this old post and this could be interesting for me, but i can't manage to find the "ChangeResolution.au3" file to test it (it is not in the AutoIt standard library, isn't it?).

Could someone tell me how to download it?

PS. I am using the version v3.3.6.1 of AutoIt

Thanks in Advance for the answers.

[E1M1]

PsaltyDS posted it, just copy code and save it as au3 file.

[Esquared]

PsaltyDS posted it, just copy code and save it as au3 file.

I'm really new to Scripting and AutoIt and am having a lot of trouble with this. All I want to do is change a users screen resolution. I copied PsaltyDS's code and saved it as "ChangeResolution.au3" in the include folder in AutoIt. I've tried running the following code:

#include <ChangeResolution.au3>

$iWidth = 1024

$iHeight = 768

$iBitsPP = 32

$iRefreshRate = 60

$vRes = _ChangeScreenRes($iWidth, $iHeight, $iBitsPP, $iRefreshRate)

If @error Then

MsgBox(262160, "ERROR", "Unable to change screen - check parameters")

EndIf

And all I get is the following error:

>"C:\Program Files\AutoIt3\SciTE\..\autoit3.exe" /ErrorStdOut "C:\Users\<username>\Desktop\AutoIt3\Scripts\resolution test.au3"

C:\Users\<username>\Desktop\AutoIt3\Scripts\resolution test.au3 (8) : ==> Unknown function name.:

$vRes = _ChangeScreenRes($iWidth, $iHeight, $iBitsPP, $iRefreshRate)

$vRes = ^ ERROR

>Exit code: 1 Time: 0.244

I've been through tons of posts and I'm pretty frustrated, I didn't thing changing the screen resolution would be so complicated...

Any help would be appreciated!!!

Thanks

[PartyPooper]

Check that the SciTE config User Include Dir is pointing to the folder where you stored ChangeResolution.au3