public void AttachToDesktop(string deviceName, bool primary, Rect area, int orientation, bool apply = true)
{
var devmode = new NativeMethods.DEVMODE(true)
{
DeviceName = deviceName,
Position = new NativeMethods.POINTL {
x = (int)area.X, y = (int)area.Y
},
PelsWidth = (int)area.Width,
PelsHeight = (int)area.Height,
DisplayOrientation = orientation,
BitsPerPel = 32,
Fields = NativeMethods.DM.Position | NativeMethods.DM.PelsHeight | NativeMethods.DM.PelsWidth | NativeMethods.DM.DisplayOrientation | NativeMethods.DM.BitsPerPixel
};
var flag =
NativeMethods.ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY |
NativeMethods.ChangeDisplaySettingsFlags.CDS_NORESET;
if (primary)
{
flag |= NativeMethods.ChangeDisplaySettingsFlags.CDS_SET_PRIMARY;
}
var ch = NativeMethods.ChangeDisplaySettingsEx(deviceName, ref devmode, IntPtr.Zero, flag, IntPtr.Zero);
if (ch == NativeMethods.DISP_CHANGE.Successful && apply)
{
ApplyDesktop();
}
}
public DisplayMode(NativeMethods.DEVMODE devmode)
{
DisplayOrientation = ((devmode.Fields & NativeMethods.DM.DisplayOrientation) != 0)?devmode.DisplayOrientation:0;
Position = ((devmode.Fields & NativeMethods.DM.Position) != 0)?new Point(devmode.Position.x, devmode.Position.y):new Point(0, 0);
BitsPerPixel = ((devmode.Fields & NativeMethods.DM.BitsPerPixel) != 0)?devmode.BitsPerPel:0;
Pels = ((devmode.Fields & (NativeMethods.DM.PelsWidth | NativeMethods.DM.PelsHeight)) != 0)? new Size(devmode.PelsWidth, devmode.PelsHeight):new Size(1, 1);
DisplayFlags = ((devmode.Fields & NativeMethods.DM.DisplayFlags) != 0)? devmode.DisplayFlags:0;
DisplayFrequency = ((devmode.Fields & NativeMethods.DM.DisplayFrequency) != 0)? devmode.DisplayFrequency:0;
DisplayFixedOutput = ((devmode.Fields & NativeMethods.DM.DisplayFixedOutput) != 0)? devmode.DisplayFixedOutput:0;
}
public void UpdateDevMode()
{
NativeMethods.DEVMODE devmode = new NativeMethods.DEVMODE(true);
int i = 0;
while (NativeMethods.EnumDisplaySettingsEx(DeviceName, i, ref devmode, 0))
{
DisplayModes.Add(new DisplayMode(devmode));
i++;
}
}
public static void GetCurrentSettings()
{
NativeMethods.DEVMODE mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
if (NativeMethods.EnumDisplaySettings(null, NativeMethods.ENUM_CURRENT_SETTINGS, ref mode))
{
Console.WriteLine("Current Display Mode: {0}x{1}, {2} bit, {3} degrees, {4} Hz",
mode.dmPelsWidth, mode.dmPelsHeight,
mode.dmBitsPerPel,
mode.dmDisplayOrientation * 90,
mode.dmDisplayFrequency);
}
}
public static void GetCurrentSettings()
{
NativeMethods.DEVMODE mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
if(NativeMethods.EnumDisplaySettings(null, NativeMethods.ENUM_CURRENT_SETTINGS, ref mode))
{
Console.WriteLine("Current Display Mode: {0}x{1}, {2} bit, {3} degrees, {4} Hz",
mode.dmPelsWidth, mode.dmPelsHeight,
mode.dmBitsPerPel,
mode.dmDisplayOrientation * 90,
mode.dmDisplayFrequency);
}
}
private void RotateScreen()
{
// initialize the DEVMODE structure
NativeMethods.DEVMODE dm = new NativeMethods.DEVMODE();
dm.dmDeviceName = new string(new char[32]);
dm.dmFormName = new string(new char[32]);
dm.dmSize = (short)Marshal.SizeOf(dm);
if (0 != NativeMethods.EnumDisplaySettings(null, NativeMethods.ENUM_CURRENT_SETTINGS, ref dm))
{
// swap width and height
int temp = dm.dmPelsHeight;
dm.dmPelsHeight = dm.dmPelsWidth;
dm.dmPelsWidth = temp;
// determine new orientation
switch (dm.dmDisplayOrientation)
{
case NativeMethods.DMDO_DEFAULT:
dm.dmDisplayOrientation = NativeMethods.DMDO_270;
break;
case NativeMethods.DMDO_270:
dm.dmDisplayOrientation = NativeMethods.DMDO_180;
break;
case NativeMethods.DMDO_180:
dm.dmDisplayOrientation = NativeMethods.DMDO_90;
break;
case NativeMethods.DMDO_90:
dm.dmDisplayOrientation = NativeMethods.DMDO_DEFAULT;
break;
default:
// unknown orientation value
// add exception handling here
break;
}
int iRet = NativeMethods.ChangeDisplaySettings(ref dm, 0);
if ((NativeMethods.DISP_CHANGE)iRet != NativeMethods.DISP_CHANGE.Successful)
{
// add exception handling here
}
}
}
public void DetachFromDesktop(string deviceName, bool apply = true)
{
NativeMethods.DEVMODE devmode = new NativeMethods.DEVMODE();
devmode.Size = (short)Marshal.SizeOf(devmode);
devmode.DeviceName = deviceName;
devmode.PelsHeight = 0;
devmode.PelsWidth = 0;
devmode.Fields = NativeMethods.DM.PelsWidth | NativeMethods.DM.PelsHeight /*| DM.BitsPerPixel*/ | NativeMethods.DM.Position
| NativeMethods.DM.DisplayFrequency | NativeMethods.DM.DisplayFlags;
var ch = NativeMethods.ChangeDisplaySettingsEx(deviceName, ref devmode, IntPtr.Zero, NativeMethods.ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY | NativeMethods.ChangeDisplaySettingsFlags.CDS_NORESET, IntPtr.Zero);
if (ch == NativeMethods.DISP_CHANGE.Successful && apply)
{
ApplyDesktop();
}
}
public static void GetDisplaySettings()
{
List<NativeMethods.DEVMODE> settings = new List<NativeMethods.DEVMODE>();
NativeMethods.DEVMODE mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
int modenum = 0;
Console.WriteLine("Supported display modes:");
while(NativeMethods.EnumDisplaySettings(null, modenum, ref mode))
{
settings.Add(mode);
Console.WriteLine("\t{5}: {0}x{1}, {2} bpp, {3} deg., {4}Hz",
mode.dmPelsWidth, mode.dmPelsHeight,
mode.dmBitsPerPel,
mode.dmDisplayOrientation * 90,
mode.dmDisplayFrequency, mode.dmDeviceName);
mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
modenum++;
}
Console.WriteLine("Got {0} display modes!", settings.Count);
}
/// <summary>
/// Gets all available display settings.
/// </summary>
/// <returns>Array of possible screen resolutions.</returns>
public static List<DisplaySettings> GetDisplaySettings()
{
var result = new Dictionary<string, DisplaySettings>();
var devMode = new NativeMethods.DEVMODE();
var modeNumber = 0;
while (NativeMethods.EnumDisplaySettings(null, modeNumber++, ref devMode))
{
var ds = new DisplaySettings()
{
BitsPerPixel = devMode.dmBitsPerPel,
Flags = devMode.dmDisplayFlags,
Frequency = devMode.dmDisplayFrequency,
Height = devMode.dmPelsHeight,
Width = devMode.dmPelsWidth
};
if (!result.ContainsKey(ds.ToString()))
result.Add(ds.ToString(), ds);
}
return result.Values.ToList();
}
public static void GetDisplaySettings()
{
List <NativeMethods.DEVMODE> settings = new List <NativeMethods.DEVMODE>();
NativeMethods.DEVMODE mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
int modenum = 0;
Console.WriteLine("Supported display modes:");
while (NativeMethods.EnumDisplaySettings(null, modenum, ref mode))
{
settings.Add(mode);
Console.WriteLine("\t{5}: {0}x{1}, {2} bpp, {3} deg., {4}Hz",
mode.dmPelsWidth, mode.dmPelsHeight,
mode.dmBitsPerPel,
mode.dmDisplayOrientation * 90,
mode.dmDisplayFrequency, mode.dmDeviceName);
mode = new NativeMethods.DEVMODE();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
modenum++;
}
Console.WriteLine("Got {0} display modes!", settings.Count);
}
public static extern bool EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref NativeMethods.DEVMODE lpDevMode);
