Disable visual effects: Call to SystemParamtersInfo shows no effect

问题

I am trying to disable all the visual effects within a Windows Server 2012 R2 remote desktop session. This is normally getting done via System => Advanced system settings => Performance "Settings" and apply the "adjust for best performance" preset.

As there are no group-policy settings nor registry values that can be set I stumbled of SystemParamtersInfo function. Unfortunately it has absolutly no effect on the RDP session I am testing it in.

I am no good programmer and this is what I knit together, with MSDN and google's help.

namespace SetVisualEffects
{
    using System;
    using System.Collections.Generic;
    using System.Runtime.InteropServices; 

    public class SetVisualEffects
    {
        [DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool SystemParametersInfo(uint uiAction, uint uiParam, bool pvParam, uint fWinIni); 

        private static UInt32 SPI_SETUIEFFECTS = 0x103F;
        private static UInt32 SPI_SETFONTSMOOTHING = 0x004b;
        private static UInt32 SPI_SETDROPSHADOW = 0x1025; 

        public static void Main()
        {
            SystemParametersInfo(SPI_SETDROPSHADOW, 0, false, 0); 
            SystemParametersInfo(SPI_SETUIEFFECTS, 0, false, 0);
            SystemParametersInfo(SPI_SETFONTSMOOTHING, 0, false, 0); 
        }
    }
}

And my similar approach using C++, unfortunately with the same outcome.

#include <windows.h>
#include <stdio.h>
#include <iostream>
#pragma comment(lib, "user32.lib")    

int main()  
{
    // Disables all UI effects.
    SystemParametersInfo(SPI_SETUIEFFECTS, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Animate controls and elements inside windows"

    // Disables "Animate windows when minimizing and maximizing"

    // Disables "Animations in the taskbar"

    // Disables "Enable Peek"

    // Disables "Fade or slide menus into view"
    SystemParametersInfo(SPI_SETMENUANIMATION, 0, FALSE, SPIF_SENDCHANGE);
    SystemParametersInfo(SPI_SETMENUFADE, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Fade or slide ToolTips into view"
    SystemParametersInfo(SPI_SETTOOLTIPFADE, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Fade out menu items after clicking"
    SystemParametersInfo(SPI_SETSELECTIONFADE, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Save taskbar thumbnail previews"

    // Disables "Show shadows under mouse pointer"
    SystemParametersInfo(SPI_SETCURSORSHADOW, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Show shadows under windows"

    // Disables "Show thumbnails instead of icons"

    // Disables "Show translucent selection rectangle"

    // Disables "Show window contents while dragging"

    // Disables "Slide open combo boxes"
    SystemParametersInfo(SPI_SETCOMBOBOXANIMATION, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Smooth edges of screen fonts"
    SystemParametersInfo(SPI_SETFONTSMOOTHING, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Smooth-scroll list boxes"
    SystemParametersInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, FALSE, SPIF_SENDCHANGE);

    // Disables "Use drop shadows for icon labels on the desktop" 
    SystemParametersInfo(SPI_SETDROPSHADOW, 0, FALSE, SPIF_SENDCHANGE); 

    return 0; 
}

So what am I doing wrong here?

来源：https://stackoverflow.com/questions/25237231/disable-visual-effects-call-to-systemparamtersinfo-shows-no-effect

标签

c++

windows

windows-server-2012-r2

visual-effects