private static Devmode GetDevmode(int devNum, int modeNum)
{
var devMode = new Devmode();
var devName = GetDeviceName(devNum);
EnumDisplaySettings(devName, modeNum, ref devMode);
return(devMode);
}
private void AddRefresh(Devmode devMode)
{
var set = devMode.dmDisplayFrequency + " Hz";
if (_listRefreshRate.IndexOf(set) == -1)
{
_listRefreshRate.Add(set);
}
}
private void AddResolution(Devmode devMode)
{
var set = devMode.dmPelsWidth + " x " + devMode.dmPelsHeight;
if (_listResolution.IndexOf(set) == -1)
{
_listResolution.Add(set);
}
}
public static IEnumerable <Devmode> GetDisplayModes(string device = null)
{
var index = 0;
var mode = new Devmode();
while (EnumDisplaySettings(device, index++, ref mode))
{
yield return(mode);
}
}
private static Devmode GetDm()
{
const int enumCurrentSettings = -1;
Devmode devMode = default;
devMode.dmSize = (short)Marshal.SizeOf(devMode);
EnumDisplaySettings(null, enumCurrentSettings, ref devMode);
return(devMode);
}
public virtual Devmode GetCurrentDisplaySettings()
{
var result = new Devmode();
result.dmDeviceName = new String(new char[32]);
result.dmSize = (short)Marshal.SizeOf(result);
result.dmDeviceName = Screen.PrimaryScreen.DeviceName;
if (EnumDisplaySettings(null, ENUM_CURRENT_SETTINGS, ref result) == 0)
{
result = InvalidDevmode;
}
return(result);
}
public static string SetPrimary(string deviceName)
{
var id = int.Parse(Regex.Match(deviceName, @"\d+").Value) - 1;
var originalMode = new Devmode();
originalMode.dmSize = (short)Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
var offsetx = originalMode.dmPositionX;
var offsety = originalMode.dmPositionY;
originalMode.dmPositionX = 0;
originalMode.dmPositionY = 0;
ChangeDisplaySettingsEx(deviceName, ref originalMode, (IntPtr)null,
ChangeDisplaySettingsFlags.CDS_SET_PRIMARY | ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY |
ChangeDisplaySettingsFlags.CDS_NORESET, IntPtr.Zero);
var device = new DisplayDevice();
device.cb = Marshal.SizeOf(device);
// Update remaining devices
for (uint otherid = 0; EnumDisplayDevices(null, otherid, ref device, 0); otherid++)
{
if (device.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop) && otherid != id)
{
device.cb = Marshal.SizeOf(device);
var otherDeviceMode = new Devmode();
EnumDisplaySettings(device.DeviceName, -1, ref otherDeviceMode);
otherDeviceMode.dmPositionX -= offsetx;
otherDeviceMode.dmPositionY -= offsety;
ChangeDisplaySettingsEx(
device.DeviceName,
ref otherDeviceMode,
(IntPtr)null,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY | ChangeDisplaySettingsFlags.CDS_NORESET,
IntPtr.Zero);
}
device.cb = Marshal.SizeOf(device);
}
// Apply settings
return
(GetMessageForCode(ChangeDisplaySettingsEx(null, IntPtr.Zero, (IntPtr)null,
ChangeDisplaySettingsFlags.CDS_NONE, (IntPtr)null)));
}
public static string ChangeResolution(string deviceName, int width, int height, int bbp, int freq)
{
var originalMode = new Devmode();
originalMode.dmSize = (short)Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
var newMode = originalMode;
newMode.dmDeviceName = deviceName;
newMode.dmPelsWidth = width;
newMode.dmPelsHeight = height;
newMode.dmBitsPerPel = bbp;
newMode.dmDisplayFrequency = freq;
return(GetMessageForCode(ChangeDisplaySettingsEx(deviceName, ref newMode, IntPtr.Zero,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero)));
}
private IEnumerable <ScreenSize> GetSupportedScreenResolutions()
{
var devmode = new Devmode();
devmode.dmDeviceName = new String(new char[32]);
devmode.dmSize = (short)Marshal.SizeOf(devmode);
devmode.dmDeviceName = Screen.PrimaryScreen.DeviceName;
int i = 0;
while (EnumDisplaySettings(null, i, ref devmode) == 1)
{
yield return(new ScreenSize {
Width = (uint)devmode.dmPelsWidth, Height = (uint)devmode.dmPelsHeight
});
i++;
}
}
private void EnumModes(int devNum)
{
_listRefreshRate.Clear();
var devName = GetDeviceName(devNum);
var devMode = new Devmode();
var modeNum = 0;
bool result;
do
{
result = EnumDisplaySettings(devName,
modeNum, ref devMode);
if (result)
{
AddRefresh(devMode);
AddResolution(devMode);
AddDisplay(devMode);
}
modeNum++;
} while (result);
}
public static string Rotate(int angle, int width, int height, string deviceName)
{
var originalMode = new Devmode();
originalMode.dmSize = (short)Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
// swap height and width
var temp = originalMode.dmPelsHeight;
originalMode.dmPelsHeight = originalMode.dmPelsWidth;
originalMode.dmPelsWidth = temp;
originalMode.dmPelsWidth = width;
originalMode.dmPelsHeight = height;
switch (angle)
{
case 0:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle0;
break;
case 90:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle90;
break;
case 180:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle180;
break;
case 270:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle270;
break;
}
return(GetMessageForCode(ChangeDisplaySettingsEx(deviceName, ref originalMode, IntPtr.Zero,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero)));
}
public static string Rotate(int angle, int width, int height, string deviceName)
{
var originalMode = new Devmode();
originalMode.dmSize = (short) Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
// swap height and width
var temp = originalMode.dmPelsHeight;
originalMode.dmPelsHeight = originalMode.dmPelsWidth;
originalMode.dmPelsWidth = temp;
originalMode.dmPelsWidth = width;
originalMode.dmPelsHeight = height;
switch (angle)
{
case 0:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle0;
break;
case 90:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle90;
break;
case 180:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle180;
break;
case 270:
originalMode.dmDisplayOrientation = ScreenOrientation.Angle270;
break;
}
return GetMessageForCode(ChangeDisplaySettingsEx(deviceName, ref originalMode, IntPtr.Zero,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero));
}
private void AddResolution(Devmode devMode)
{
var set = devMode.dmPelsWidth + " x " + devMode.dmPelsHeight;
if (_listResolution.IndexOf(set) == -1)
_listResolution.Add(set);
}
private static extern bool EnumDisplaySettings(string devName, int modeNum, ref Devmode devMode);
public static string ChangeResolution(string deviceName, int width, int height, int bbp, int freq)
{
var originalMode = new Devmode();
originalMode.dmSize = (short) Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
var newMode = originalMode;
newMode.dmDeviceName = deviceName;
newMode.dmPelsWidth = width;
newMode.dmPelsHeight = height;
newMode.dmBitsPerPel = bbp;
newMode.dmDisplayFrequency = freq;
return GetMessageForCode(ChangeDisplaySettingsEx(deviceName, ref newMode, IntPtr.Zero,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero));
}
private void EnumModes(int devNum)
{
_listRefreshRate.Clear();
var devName = GetDeviceName(devNum);
var devMode = new Devmode();
var modeNum = 0;
bool result;
do
{
result = EnumDisplaySettings(devName,
modeNum, ref devMode);
if (result)
{
AddRefresh(devMode);
AddResolution(devMode);
AddDisplay(devMode);
}
modeNum++;
} while (result);
}
private void AddRefresh(Devmode devMode)
{
var set = devMode.dmDisplayFrequency + " Hz";
if (_listRefreshRate.IndexOf(set) == -1)
_listRefreshRate.Add(set);
}
internal static extern int EnumDisplaySettings(string deviceName, int modeNum, ref Devmode devMode);
public static extern int ChangeDisplaySettings(ref Devmode devMode, int flags);
private void AddDisplay(Devmode devMode)
{
var set = devMode.dmPelsWidth + " x " + devMode.dmPelsHeight + " - " + devMode.dmDisplayFrequency + " Hz";
_listDisplay.Add(set);
}
public static List<DisplayInformation> DisplayInformation()
{
var monitors = new List<DisplayInformation>();
var d = new DisplayDevice();
d.cb = Marshal.SizeOf(d);
try
{
for (uint id = 0; EnumDisplayDevices(null, id, ref d, 0); id++)
{
if (d.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop))
{
var device = d.DeviceName;
var vDevMode = new Devmode();
var i = 0;
var supportedResolutions = new Dictionary<string, List<ResolutionInformation>>();
while (EnumDisplaySettings(device, i, ref vDevMode))
{
var width = vDevMode.dmPelsWidth;
var height = vDevMode.dmPelsHeight;
var bpp = vDevMode.dmBitsPerPel;
var orientation = vDevMode.dmDisplayOrientation.ToString();
var freq = vDevMode.dmDisplayFrequency;
var resolutionKey = $"{width}x{height}";
var resolution = new ResolutionInformation
{
BitsPerPixel = bpp,
Frequency = freq,
Height = height,
Width = width,
Orientation = orientation
};
if (supportedResolutions.ContainsKey(resolutionKey))
{
supportedResolutions[resolutionKey].Add(resolution);
}
else
{
supportedResolutions.Add(resolutionKey, new List<ResolutionInformation>());
supportedResolutions[resolutionKey].Add(resolution);
}
i++;
}
var cDevMode = new Devmode();
EnumDisplaySettings(device, ENUM_CURRENT_SETTINGS, ref cDevMode);
var currentResolution = new ResolutionInformation
{
BitsPerPixel = cDevMode.dmBitsPerPel,
Frequency = cDevMode.dmDisplayFrequency,
Height = cDevMode.dmPelsHeight,
Width = cDevMode.dmPelsWidth,
Orientation = cDevMode.dmDisplayOrientation.ToString()
};
var monitor = new DisplayInformation
{
Primary = d.StateFlags.HasFlag(DisplayDeviceStateFlags.PrimaryDevice),
Attached = d.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop),
Removable = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Removable),
VgaCompatible = d.StateFlags.HasFlag(DisplayDeviceStateFlags.VgaCompatible),
MirroringDriver = d.StateFlags.HasFlag(DisplayDeviceStateFlags.MirroringDriver),
MultiDriver = d.StateFlags.HasFlag(DisplayDeviceStateFlags.MultiDriver),
ModesPruned = d.StateFlags.HasFlag(DisplayDeviceStateFlags.ModesPruned),
Remote = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Remote),
Disconnect = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Disconnect),
FriendlyName = $"{GetAllMonitorsFriendlyNames().ElementAt((int) id)} on {d.DeviceString}",
SupportedResolutions = supportedResolutions,
CurrentResolution = currentResolution,
DeviceName = device
};
monitors.Add(monitor);
d.cb = Marshal.SizeOf(d);
EnumDisplayDevices(d.DeviceName, 0, ref d, 0);
}
d.cb = Marshal.SizeOf(d);
}
}
catch (Exception ex)
{
if (Debugger.IsAttached)
{
Console.WriteLine($"{ex}");
}
}
return monitors;
}
public static extern bool EnumDisplaySettings(string deviceName, int modeNum, ref Devmode devMode);
public static extern bool EnumDisplaySettings(
string deviceName, int modeNum, ref Devmode devMode);
public static extern DISP_CHANGE ChangeDisplaySettingsEx(string lpszDeviceName, ref Devmode lpDevMode,
IntPtr hwnd, ChangeDisplaySettingsFlags dwflags, IntPtr lParam);
private static extern bool EnumDisplaySettings(string devName, int modeNum, ref Devmode devMode);
public static string SetPrimary(string deviceName)
{
var id = int.Parse(Regex.Match(deviceName, @"\d+").Value) - 1;
var originalMode = new Devmode();
originalMode.dmSize = (short) Marshal.SizeOf(originalMode);
EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, ref originalMode);
var offsetx = originalMode.dmPositionX;
var offsety = originalMode.dmPositionY;
originalMode.dmPositionX = 0;
originalMode.dmPositionY = 0;
ChangeDisplaySettingsEx(deviceName, ref originalMode, (IntPtr) null,
ChangeDisplaySettingsFlags.CDS_SET_PRIMARY | ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY |
ChangeDisplaySettingsFlags.CDS_NORESET, IntPtr.Zero);
var device = new DisplayDevice();
device.cb = Marshal.SizeOf(device);
// Update remaining devices
for (uint otherid = 0; EnumDisplayDevices(null, otherid, ref device, 0); otherid++)
{
if (device.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop) && otherid != id)
{
device.cb = Marshal.SizeOf(device);
var otherDeviceMode = new Devmode();
EnumDisplaySettings(device.DeviceName, -1, ref otherDeviceMode);
otherDeviceMode.dmPositionX -= offsetx;
otherDeviceMode.dmPositionY -= offsety;
ChangeDisplaySettingsEx(
device.DeviceName,
ref otherDeviceMode,
(IntPtr) null,
ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY | ChangeDisplaySettingsFlags.CDS_NORESET,
IntPtr.Zero);
}
device.cb = Marshal.SizeOf(device);
}
// Apply settings
return
GetMessageForCode(ChangeDisplaySettingsEx(null, IntPtr.Zero, (IntPtr) null,
ChangeDisplaySettingsFlags.CDS_NONE, (IntPtr) null));
}
private static Devmode GetDevmode(int devNum, int modeNum)
{
var devMode = new Devmode();
var devName = GetDeviceName(devNum);
EnumDisplaySettings(devName, modeNum, ref devMode);
return devMode;
}
private static List <DisplayInformation> UpdateDisplays()
{
var monitors = new List <DisplayInformation>();
var d = new DisplayDevice();
d.cb = Marshal.SizeOf(d);
try
{
for (uint id = 0; EnumDisplayDevices(null, id, ref d, 0); id++)
{
if (d.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop))
{
var device = d.DeviceName;
var vDevMode = new Devmode();
var i = 0;
var supportedResolutions = new Dictionary <string, List <ResolutionInformation> >();
while (EnumDisplaySettings(device, i, ref vDevMode))
{
var width = vDevMode.dmPelsWidth;
var height = vDevMode.dmPelsHeight;
var bpp = vDevMode.dmBitsPerPel;
var orientation = vDevMode.dmDisplayOrientation.ToString();
var freq = vDevMode.dmDisplayFrequency;
var resolutionKey = $"{width}x{height}";
var resolution = new ResolutionInformation
{
BitsPerPixel = bpp,
Frequency = freq,
Height = height,
Width = width,
Orientation = orientation
};
if (supportedResolutions.ContainsKey(resolutionKey))
{
supportedResolutions[resolutionKey].Add(resolution);
}
else
{
supportedResolutions.Add(resolutionKey, new List <ResolutionInformation>());
supportedResolutions[resolutionKey].Add(resolution);
}
i++;
}
var cDevMode = new Devmode();
EnumDisplaySettings(device, ENUM_CURRENT_SETTINGS, ref cDevMode);
var currentResolution = new ResolutionInformation
{
BitsPerPixel = cDevMode.dmBitsPerPel,
Frequency = cDevMode.dmDisplayFrequency,
Height = cDevMode.dmPelsHeight,
Width = cDevMode.dmPelsWidth,
Orientation = cDevMode.dmDisplayOrientation.ToString(),
X = cDevMode.dmPositionX,
Y = cDevMode.dmPositionY
};
var monitor = new DisplayInformation
{
Primary = d.StateFlags.HasFlag(DisplayDeviceStateFlags.PrimaryDevice),
Attached = d.StateFlags.HasFlag(DisplayDeviceStateFlags.AttachedToDesktop),
Removable = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Removable),
VgaCompatible = d.StateFlags.HasFlag(DisplayDeviceStateFlags.VgaCompatible),
MirroringDriver = d.StateFlags.HasFlag(DisplayDeviceStateFlags.MirroringDriver),
MultiDriver = d.StateFlags.HasFlag(DisplayDeviceStateFlags.MultiDriver),
ModesPruned = d.StateFlags.HasFlag(DisplayDeviceStateFlags.ModesPruned),
Remote = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Remote),
Disconnect = d.StateFlags.HasFlag(DisplayDeviceStateFlags.Disconnect),
FriendlyName = $"{GetAllMonitorsFriendlyNames().ElementAt((int)id)} on {d.DeviceString}",
SupportedResolutions = supportedResolutions,
CurrentResolution = currentResolution,
DeviceName = device
};
monitors.Add(monitor);
d.cb = Marshal.SizeOf(d);
EnumDisplayDevices(d.DeviceName, 0, ref d, 0);
}
d.cb = Marshal.SizeOf(d);
}
return(monitors);
}
catch
{
}
string errorMessage = new Win32Exception(Marshal.GetLastWin32Error()).Message;
Console.WriteLine(errorMessage);
return(monitors);
}
private void AddDisplay(Devmode devMode)
{
var set = devMode.dmPelsWidth + " x " + devMode.dmPelsHeight + " - " + devMode.dmDisplayFrequency + " Hz";
_listDisplay.Add(set);
}
public static extern int ChangeDisplaySettings(ref Devmode devMode, int flags);
public static extern DISP_CHANGE ChangeDisplaySettingsEx(string lpszDeviceName, ref Devmode lpDevMode,
IntPtr hwnd, ChangeDisplaySettingsFlags dwflags, IntPtr lParam);
