Programación de Gráficos - Cambio de Resolucion Complejo

csharp

using System;

using System.Runtime.InteropServices;

public class ResolucionPantalla

{

    [DllImport("user32.dll")]

    public static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DEVMODE lpDevMode, IntPtr hwnd, uint dwflags, IntPtr lParam);

    [DllImport("user32.dll")]

    public static extern int EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref DEVMODE lpDevMode);

    [StructLayout(LayoutKind.Sequential)]

    public struct DEVMODE

    {

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]

        public string dmDeviceName;

        public short dmSpecVersion;

        public short dmDriverVersion;

        public short dmSize;

        public short dmDriverExtra;

        public uint dmFields;

        public int dmPositionX;

        public int dmPositionY;

        public int dmDisplayOrientation;

        public int dmDisplayFixedOutput;

        public short dmColor;

        public short dmDuplex;

        public short dmYResolution;

        public short dmTTOption;

        public short dmCollate;

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]

        public string dmFormName;

        public short dmLogPixels;

        public uint dmBitsPerPel;

        public uint dmPelsWidth;

        public uint dmPelsHeight;

        public uint dmDisplayFlags;

        public uint dmDisplayFrequency;

        public uint dmICMMethod;

        public uint dmICMIntent;

        public uint dmMediaType;

        public uint dmDitherType;

        public uint dmReserved1;

        public uint dmReserved2;

        public uint dmPanningWidth;

        public uint dmPanningHeight;

    }

    public static void CambiarResolucion(int ancho, int alto)

    {

        DEVMODE devMode = new DEVMODE();

        devMode.dmSize = (short)Marshal.SizeOf(devMode);

        if (EnumDisplaySettings(null, -1, ref devMode) != 0)

        {

            devMode.dmPelsWidth = (uint)ancho;

            devMode.dmPelsHeight = (uint)alto;

            int result = ChangeDisplaySettingsEx(null, ref devMode, IntPtr.Zero, 0x00000004 | 0x00000002, IntPtr.Zero);

            if (result != 0)

            {

                Console.WriteLine("No se pudo cambiar la resolución de la pantalla.");

            }

        }

    }

    public static void RestaurarResolucionOriginal()

    {

        ChangeDisplaySettingsEx(null, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero);

    }

    public static void Main()

    {

        // Cambiar a la resolución deseada

        CambiarResolucion(800, 600);

        // Realizar la presentación

        // Restaurar la resolución original

        RestaurarResolucionOriginal();

    }

}