public static ScreenEx GetScreenSettings(Forms.Screen screen)
{
ScreenSettingsDevMode DevMode = new ScreenSettingsDevMode(true);
if (EnumDisplaySettings(screen.DeviceName, -1 /*current settings*/, ref DevMode) == 0)
{
throw new Exception("EnumDisplaySettings (user32.dll) returned 0");
}
ScreenEx screenSettings = new ScreenEx(screen, DevMode);
return(screenSettings);
}
/// <summary>
/// <para>Updates the screen's settings</para>
/// </summary>
/// <param name="screen"></param>
/// <returns></returns>
public static bool UpdateScreen(ScreenEx screen)
{
ScreenSettingsDevMode devMode = screen.ToDEVMODE();
DispChange result = ChangeDisplaySettingsEx(screen.Name, ref devMode, CDS.RESET | CDS.UPDATEREGISTRY);
if (result >= 0)
{
return(true);
}
else
{
return(false);
}
}
public ScreenEx(Forms.Screen screen, ScreenSettingsDevMode devMode)
{
this.DeviceName = screen.DeviceName;
this.BitsPerPixel = (byte)screen.BitsPerPixel;
this.Bounds = new Rectangle(screen.Bounds.Location, screen.Bounds.Size);
this.Primary = screen.Primary;
this.SpecVersion = devMode.dmSpecVersion;
this.DriverVersion = devMode.dmDriverVersion;
this.FixedOutput = (FixedOutput)devMode.dmDisplayFixedOutput;
this.LogPixels = devMode.dmLogPixels;
this.ColorDepth = (ColorDepth)devMode.dmBitsPerPel;
this.DisplayFlags = devMode.dmDisplayFlags;
this.Frequency = (byte)devMode.dmDisplayFrequency;
this.Orientation = (ScreenOrientation)devMode.dmDisplayOrientation;
this.fields = 0;
}
/// <summary>
/// <para>Converts this class to a <see cref="ScreenSettingsDevMode"/> struct which then may be used to update the settings</para>
/// </summary>
/// <returns></returns>
public ScreenSettingsDevMode ToDEVMODE()
{
ScreenSettingsDevMode devMode = new ScreenSettingsDevMode(true);
devMode.dmBitsPerPel = this.BitsPerPixel;
devMode.dmDeviceName = this.DeviceName;
devMode.dmDisplayFixedOutput = (int)this.FixedOutput;
devMode.dmDisplayFlags = this.DisplayFlags;
devMode.dmDisplayFrequency = this.Frequency;
devMode.dmDisplayOrientation = (int)this.Orientation;
devMode.dmDriverVersion = this.DriverVersion;
devMode.dmFields = (int)this.fields;
devMode.dmFormName = "";
devMode.dmLogPixels = this.LogPixels;
devMode.dmPelsHeight = this.Bounds.Height;
devMode.dmPelsWidth = this.Bounds.Width;
devMode.dmPositionX = this.Bounds.X;
devMode.dmPositionY = this.Bounds.Y;
devMode.dmSpecVersion = this.SpecVersion;
devMode.dmSize = (short)System.Runtime.InteropServices.Marshal.SizeOf(devMode);
return(devMode);
}
/// <summary>
/// <para>The ChangeDisplaySettingsEx function changes the settings of the specified display device to the specified graphics mode.</para>
/// <para>Use this one if you are not sure</para>
/// </summary>
/// <param name="deviceName">
/// <para>String that specifies the display device whose graphics mode will change. Only display device names as returned by EnumDisplayDevices are valid.</para>
/// <para>The <paramref name="deviceName"/> parameter can be NULL. A NULL value specifies the default display device. The default device can be determined by calling EnumDisplayDevices and checking for the DISPLAY_DEVICE_PRIMARY_DEVICE flag.</para>
/// </param>
/// <param name="devMode"><para>A pointer to a <see cref="ScreenSettingsDevMode"/> structure that describes the new graphics mode. If <paramref name="devMode"/> is NULL, all the values currently in the registry will be used for the display setting. Passing NULL for the <paramref name="devMode"/> parameter and 0 for the <paramref name="dwFlags"/> parameter is the easiest way to return to the default mode after a dynamic mode change.</para></param>
/// <param name="dwFlags"></param>
/// <returns></returns>
internal static DispChange ChangeDisplaySettingsEx(string deviceName, ref ScreenSettingsDevMode devMode, CDS dwFlags)
{
return((DispChange)ChangeDisplaySettingsEx(deviceName, ref devMode, IntPtr.Zero, (int)dwFlags, IntPtr.Zero));
}
internal static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref ScreenSettingsDevMode lpDevMode, IntPtr hwnd, int dwFlags, IntPtr lParam);
/// <summary>
/// <para>Updates the screen's settings and sets it as primary screen</para>
/// </summary>
/// <param name="screen"></param>
/// <returns></returns>
public static bool UpdateScreenAndMakePrimary(ScreenEx screen)
{
ScreenSettingsDevMode devMode = screen.ToDEVMODE();
return(ChangeDisplaySettingsEx(screen.Name, ref devMode, CDS.RESET | CDS.UPDATEREGISTRY | CDS.SET_PRIMARY) >= 0);
}
public ScreenEx(Forms.Screen screen, ScreenSettingsDevMode devMode)
{
this.DeviceName = screen.DeviceName;
this.BitsPerPixel = (byte)screen.BitsPerPixel;
this.Bounds = new Rectangle(screen.Bounds.Location, screen.Bounds.Size);
this.Primary = screen.Primary;
this.SpecVersion = devMode.dmSpecVersion;
this.DriverVersion = devMode.dmDriverVersion;
this.FixedOutput = (FixedOutput)devMode.dmDisplayFixedOutput;
this.LogPixels = devMode.dmLogPixels;
this.ColorDepth = (ColorDepth)devMode.dmBitsPerPel;
this.DisplayFlags = devMode.dmDisplayFlags;
this.Frequency = (byte)devMode.dmDisplayFrequency;
this.Orientation = (ScreenOrientation)devMode.dmDisplayOrientation;
this.fields = 0;
}
/// <summary>
/// <para>Converts this class to a <see cref="ScreenSettingsDevMode"/> struct which then may be used to update the settings</para>
/// </summary>
/// <returns></returns>
public ScreenSettingsDevMode ToDEVMODE()
{
ScreenSettingsDevMode devMode = new ScreenSettingsDevMode(true);
devMode.dmBitsPerPel = this.BitsPerPixel;
devMode.dmDeviceName = this.DeviceName;
devMode.dmDisplayFixedOutput = (int)this.FixedOutput;
devMode.dmDisplayFlags = this.DisplayFlags;
devMode.dmDisplayFrequency = this.Frequency;
devMode.dmDisplayOrientation = (int)this.Orientation;
devMode.dmDriverVersion = this.DriverVersion;
devMode.dmFields = (int)this.fields;
devMode.dmFormName = "";
devMode.dmLogPixels = this.LogPixels;
devMode.dmPelsHeight = this.Bounds.Height;
devMode.dmPelsWidth = this.Bounds.Width;
devMode.dmPositionX = this.Bounds.X;
devMode.dmPositionY = this.Bounds.Y;
devMode.dmSpecVersion = this.SpecVersion;
devMode.dmSize = (short)System.Runtime.InteropServices.Marshal.SizeOf(devMode);
return devMode;
}
private static extern int EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref ScreenSettingsDevMode lpDevMode);
