public static bool ChangeResolutionEx(ResolutionModeWrapper resolutionMode, string lpszDeviceName)
{
Devmode mode = new Devmode();
if (GetCurrentResolutionSettings(out mode, lpszDeviceName))
{
mode.dmPelsWidth = resolutionMode.DmPelsWidth;
mode.dmPelsHeight = resolutionMode.DmPelsHeight;
mode.dmBitsPerPel = resolutionMode.DmBitsPerPel;
mode.dmDisplayFrequency = resolutionMode.DmDisplayFrequency;
mode.dmDisplayFixedOutput = resolutionMode.DmDisplayFixedOutput;
DispChange returnValue = (DispChange)ChangeDisplaySettingsEx(lpszDeviceName, ref mode, IntPtr.Zero, (ChangeDisplaySettingsFlags.CdsUpdateregistry | ChangeDisplaySettingsFlags.CdsNoreset), IntPtr.Zero);
ChangeDisplaySettingsEx(null, IntPtr.Zero, (IntPtr)null, ChangeDisplaySettingsFlags.CdsNone, (IntPtr)null);
if (DispChange.DispChangeSuccessful == returnValue)
{
return(true);
}
else
{
MessageBox.Show("Changing the resolution failed: " + Enum.GetName(typeof(DispChange), returnValue));
}
}
return(false);
}
public ResolutionModeWrapper(Devmode mode)
{
this.DmPelsWidth = mode.dmPelsWidth;
this.DmPelsHeight = mode.dmPelsHeight;
this.DmBitsPerPel = mode.dmBitsPerPel;
this.DmDisplayFrequency = mode.dmDisplayFrequency;
this.DmDisplayFixedOutput = mode.dmDisplayFixedOutput;
}
public ResolutionModeWrapper(Devmode mode)
{
this.DmPelsWidth = mode.dmPelsWidth;
this.DmPelsHeight = mode.dmPelsHeight;
this.DmBitsPerPel = mode.dmBitsPerPel;
this.DmDisplayFrequency = mode.dmDisplayFrequency;
this.DmDisplayFixedOutput = mode.dmDisplayFixedOutput;
}
public static bool GetCurrentResolutionSettings(out Devmode mode, string lpszDeviceName)
{
mode = new Devmode();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
mode.dmDriverExtra = 0;
if (EnumDisplaySettings(lpszDeviceName, EnumCurrentSettings, ref mode) == true)
{
return(true);
}
return(false);
}
public static List <ResolutionModeWrapper> EnumerateSupportedResolutionModes()
{
List <ResolutionModeWrapper> resolutionList = new List <ResolutionModeWrapper>();
Devmode mode = new Devmode();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
int index = 0;
while (EnumDisplaySettings(null, index++, ref mode) == true)
{
resolutionList.Add(new ResolutionModeWrapper(mode));
}
return(resolutionList);
}
public static bool ChangeResolution(ResolutionModeWrapper resolutionMode)
{
Devmode mode = new Devmode();
if (GetCurrentResolutionSettings(out mode, null))
{
mode.dmPelsWidth = resolutionMode.DmPelsWidth;
mode.dmPelsHeight = resolutionMode.DmPelsHeight;
mode.dmBitsPerPel = resolutionMode.DmBitsPerPel;
mode.dmDisplayFrequency = resolutionMode.DmDisplayFrequency;
mode.dmDisplayFixedOutput = resolutionMode.DmDisplayFixedOutput;
DispChange returnValue = (DispChange)ChangeDisplaySettings(ref mode, 0);
if (DispChange.DispChangeSuccessful == returnValue)
{
return(true);
}
else
{
MessageBox.Show("Changing the resolution failed: " + Enum.GetName(typeof(DispChange), returnValue));
}
}
return(false);
}
private static extern DispChange ChangeDisplaySettingsEx(
string lpszDeviceName,
ref Devmode lpDevMode,
IntPtr hwnd,
ChangeDisplaySettingsFlags dwflags,
IntPtr lParam);
private static extern int ChangeDisplaySettings(
[In, Out]
ref Devmode lpDevMode,
[param: MarshalAs(UnmanagedType.U4)]
uint dwflags);
public static extern bool EnumDisplaySettings(string deviceName, int modeNum, ref Devmode devMode);
private static extern DispChange ChangeDisplaySettingsEx(
string lpszDeviceName,
ref Devmode lpDevMode,
IntPtr hwnd,
ChangeDisplaySettingsFlags dwflags,
IntPtr lParam);
public static bool GetCurrentResolutionSettings(out Devmode mode, string lpszDeviceName)
{
mode = new Devmode();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
mode.dmDriverExtra = 0;
if (EnumDisplaySettings(lpszDeviceName, EnumCurrentSettings, ref mode) == true)
{
return true;
}
return false;
}
public static List<ResolutionModeWrapper> EnumerateSupportedResolutionModes()
{
List<ResolutionModeWrapper> resolutionList = new List<ResolutionModeWrapper>();
Devmode mode = new Devmode();
mode.dmSize = (ushort)Marshal.SizeOf(mode);
int index = 0;
while (EnumDisplaySettings(null, index++, ref mode) == true)
{
resolutionList.Add(new ResolutionModeWrapper(mode));
}
return resolutionList;
}
public static extern bool EnumDisplaySettings(string deviceName, int modeNum, ref Devmode devMode);
public static bool ChangeResolutionEx(ResolutionModeWrapper resolutionMode, string lpszDeviceName)
{
Devmode mode = new Devmode();
if (GetCurrentResolutionSettings(out mode, lpszDeviceName))
{
mode.dmPelsWidth = resolutionMode.DmPelsWidth;
mode.dmPelsHeight = resolutionMode.DmPelsHeight;
mode.dmBitsPerPel = resolutionMode.DmBitsPerPel;
mode.dmDisplayFrequency = resolutionMode.DmDisplayFrequency;
mode.dmDisplayFixedOutput = resolutionMode.DmDisplayFixedOutput;
DispChange returnValue = (DispChange)ChangeDisplaySettingsEx(lpszDeviceName, ref mode, IntPtr.Zero, (ChangeDisplaySettingsFlags.CdsUpdateregistry | ChangeDisplaySettingsFlags.CdsNoreset), IntPtr.Zero);
ChangeDisplaySettingsEx(null, IntPtr.Zero, (IntPtr)null, ChangeDisplaySettingsFlags.CdsNone, (IntPtr)null);
if (DispChange.DispChangeSuccessful == returnValue)
{
return true;
}
else
{
MessageBox.Show("Changing the resolution failed: " + Enum.GetName(typeof(DispChange), returnValue));
}
}
return false;
}
public static bool ChangeResolution(ResolutionModeWrapper resolutionMode)
{
Devmode mode = new Devmode();
if (GetCurrentResolutionSettings(out mode, null))
{
mode.dmPelsWidth = resolutionMode.DmPelsWidth;
mode.dmPelsHeight = resolutionMode.DmPelsHeight;
mode.dmBitsPerPel = resolutionMode.DmBitsPerPel;
mode.dmDisplayFrequency = resolutionMode.DmDisplayFrequency;
mode.dmDisplayFixedOutput = resolutionMode.DmDisplayFixedOutput;
DispChange returnValue = (DispChange)ChangeDisplaySettings(ref mode, 0);
if (DispChange.DispChangeSuccessful == returnValue)
{
return true;
}
else
{
MessageBox.Show("Changing the resolution failed: " + Enum.GetName(typeof(DispChange), returnValue));
}
}
return false;
}