/// <summary>
/// Changes the current display settings with the new settings provided. May throw InvalidOperationException if failed. Check the exception message for more details.
/// </summary>
/// <param name="set">The new settings.</param>
/// <remarks>
/// Internally calls ChangeDisplaySettings() native function.
/// </remarks>
public static void SetDisplaySettings(DisplaySettings set)
{
SafeNativeMethods.DEVMODE mode = GetDeviceMode();
mode.dmPelsWidth = (uint)set.Width;
mode.dmPelsHeight = (uint)set.Height;
mode.dmDisplayOrientation = (uint)set.Orientation;
mode.dmBitsPerPel = (uint)set.BitCount;
mode.dmDisplayFrequency = (uint)set.Frequency;
DisplayChangeResult result = (DisplayChangeResult)SafeNativeMethods.ChangeDisplaySettings(ref mode, 0);
string msg = null;
Assembly asm = Assembly.GetExecutingAssembly();
switch (result)
{
case DisplayChangeResult.BadDualView:
msg = InvalidOperation_Disp_Change_BadDualView;
break;
case DisplayChangeResult.BadParam:
msg = InvalidOperation_Disp_Change_BadParam;
break;
case DisplayChangeResult.BadFlags:
msg = InvalidOperation_Disp_Change_BadFlags;
break;
case DisplayChangeResult.NotUpdated:
msg = InvalidOperation_Disp_Change_NotUpdated;
break;
case DisplayChangeResult.BadMode:
msg = InvalidOperation_Disp_Change_BadMode;
break;
case DisplayChangeResult.Failed:
msg = InvalidOperation_Disp_Change_Failed;
break;
case DisplayChangeResult.Restart:
msg = InvalidOperation_Disp_Change_Restart;
break;
}
if (msg != null)
{
throw new InvalidOperationException(msg);
}
}
/// <summary>
/// Changes the current display settings with the new settings provided. May throw InvalidOperationException if failed. Check the exception message for more details.
/// </summary>
/// <param name="set">The new settings.</param>
/// <remarks>
/// Internally calls ChangeDisplaySettings() native function.
/// </remarks>
public static void SetDisplaySettings(DisplaySettings set)
{
SafeNativeMethods.DEVMODE mode = GetDeviceMode();
mode.dmPelsWidth = (uint)set.Width;
mode.dmPelsHeight = (uint)set.Height;
mode.dmDisplayOrientation = (uint)set.Orientation;
mode.dmBitsPerPel = (uint)set.BitCount;
mode.dmDisplayFrequency = (uint)set.Frequency;
DisplayChangeResult result = (DisplayChangeResult)SafeNativeMethods.ChangeDisplaySettings(ref mode, 0);
string msg = null;
switch (result)
{
case DisplayChangeResult.BadDualView:
msg = "The settings change was unsuccessful because system is DualView capable.";
break;
case DisplayChangeResult.BadParam:
msg = "An invalid parameter was passed in. This can include an invalid flag or combination of flags.";
break;
case DisplayChangeResult.BadFlags:
msg = "An invalid set of flags was passed in.";
break;
case DisplayChangeResult.NotUpdated:
msg = "Unable to write settings to the registry.";
break;
case DisplayChangeResult.BadMode:
msg = "The graphics mode is not supported.";
break;
case DisplayChangeResult.Failed:
msg = "The display driver failed the specified graphics mode.";
break;
case DisplayChangeResult.Restart:
msg = "The computer must be restarted in order for the graphics mode to work.";
break;
}
if (msg != null)
{
throw new InvalidOperationException(msg);
}
}
private string ChangeMainDisplayPosition(string name, int x, int y)
{
DEVMODE dm = GetDEVMODE();
//if (0 != Native.Methods.EnumDisplaySettings(@"\\.\DISPLAY1", Native.Methods.ENUM_CURRENT_SETTINGS, ref dm))
if (0 != Native.Methods.EnumDisplaySettings(name, Native.Methods.ENUM_CURRENT_SETTINGS, ref dm))
{
dm.dmPositionX = x;
dm.dmPositionY = y;
DisplayChangeResult iRet = Native.Methods.ChangeDisplaySettings(ref dm, ChangeDisplaySettingsFlags.CDS_TEST);
if (iRet == DisplayChangeResult.Failed)
{
return("Unable To Process Your Request. Sorry For This Inconvenience.");
}
else
{
iRet = Native.Methods.ChangeDisplaySettings(ref dm, 0);
switch (iRet)
{
case DisplayChangeResult.Successful:
{
return("Success");
}
case DisplayChangeResult.Restart:
{
return("You Need To Reboot For The Change To Happen.\n If You Feel Any Problem After Rebooting Your Machine\nThen Try To Change Resolution In Safe Mode.");
}
default:
{
return("Failed To Change The Position");
}
}
}
}
else
{
return("Failed To Change The Position.");
}
}
