// helper for creating an initialized DEVMODE structure
public static Devmode CreateDevmode()
{
var dm = new Devmode
{
dmDeviceName = new string(new char[32]),
dmFormName = new string(new char[32])
};
dm.dmSize = (short) Marshal.SizeOf(dm);
return dm;
}
// helper for creating an initialized DEVMODE structure
public static Devmode CreateDevmode()
{
var dm = new Devmode
{
dmDeviceName = new string(new char[32]),
dmFormName = new string(new char[32])
};
dm.dmSize = (short)Marshal.SizeOf(dm);
return(dm);
}
public void For(int rotation, uint deviceId)
{
//uint deviceId = 1; // zero origin (i.e. 1 means DISPLAY2)
var displayDevice = new DisplayDevice();
var devMode = new Devmode();
displayDevice.cb = Marshal.SizeOf(displayDevice);
NativeMethods.EnumDisplayDevices(null, deviceId, ref displayDevice, 0);
if (0 != NativeMethods.EnumDisplaySettings(
displayDevice.DeviceName, NativeMethods.EnumCurrentSettings, ref devMode))
{
int temp = devMode.dmPelsHeight;
devMode.dmPelsHeight = devMode.dmPelsWidth;
devMode.dmPelsWidth = temp;
}
devMode.dmDisplayOrientation = rotation;
DisplayChange iRet = NativeMethods.ChangeDisplaySettingsEx(
displayDevice.DeviceName, ref devMode, IntPtr.Zero,
DisplaySettingsFlags.CdsUpdateregistry, IntPtr.Zero);
}
public void RunFor(int rotation, uint deviceId)
{
//uint deviceId = 1; // zero origin (i.e. 1 means DISPLAY2)
var displayDevice = new DisplayDevice();
var devMode = new Devmode();
displayDevice.cb = Marshal.SizeOf(displayDevice);
NativeMethods.EnumDisplayDevices(null, deviceId, ref displayDevice, 0);
if (0 != NativeMethods.EnumDisplaySettings(
displayDevice.DeviceName, NativeMethods.EnumCurrentSettings, ref devMode))
{
int temp = devMode.dmPelsHeight;
devMode.dmPelsHeight = devMode.dmPelsWidth;
devMode.dmPelsWidth = temp;
}
devMode.dmDisplayOrientation = rotation;
DisplayChange iRet = NativeMethods.ChangeDisplaySettingsEx(
displayDevice.DeviceName, ref devMode, IntPtr.Zero,
DisplaySettingsFlags.CdsUpdateregistry, IntPtr.Zero);
}
public static extern int EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref Devmode lpDevMode);
internal static extern DisplayChange ChangeDisplaySettingsEx(
string lpszDeviceName, ref Devmode lpDevMode, IntPtr hwnd,
DisplaySettingsFlags dwflags, IntPtr lParam);
public static extern int ChangeDisplaySettings(ref Devmode lpDevMode, int dwFlags);
internal static extern DisplayChange ChangeDisplaySettingsEx(
string lpszDeviceName, ref Devmode lpDevMode, IntPtr hwnd,
DisplaySettingsFlags dwflags, IntPtr lParam);
public static extern int EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref Devmode lpDevMode);
public static extern int ChangeDisplaySettings(ref Devmode lpDevMode, int dwFlags);