static void printValues()
{
int curID = 0;
bool done = false;
do
{
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
WinApi.DISPLAY_DEVICE ddTwo = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
ddTwo.cb = Marshal.SizeOf(ddTwo);
bool t = WinApi.User_32.EnumDisplayDevices(null, curID, ref ddOne, 0);
if (!t)
{
return;
}
t = WinApi.User_32.EnumDisplayDevices(ddOne.DeviceName, 0, ref ddTwo, 0);
ddOne.DeviceString = ddTwo.DeviceString;
WinApi.DEVMODE test = new WinApi.DEVMODE();
WinApi.User_32.EnumDisplaySettings("Test", 4, ref test);
int succ = WinApi.User_32.EnumDisplaySettings(ddOne.DeviceName, (-1), ref test);
Console.WriteLine(test);
Console.WriteLine(ddOne);
curID++;
} while (!done);
}
public static string GetScreenName(int id)
{
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
WinApi.User_32.EnumDisplayDevices(null, id, ref ddOne, 0);
return(ddOne.DeviceName);
}
public static string GetScreenName(int id)
{
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
WinApi.User_32.EnumDisplayDevices(null, id, ref ddOne, 0);
return ddOne.DeviceName;
}
public static void SetPrimary(int dn)
{
string[] devName = new string[3];
if (dn == 1 || dn == 2)
{
if(dn ==1)
{
devName[1] = "\\\\.\\DISPLAY" + 1;
devName[2] = "\\\\.\\DISPLAY" + 2;
}
if (dn == 2)
{
devName[1] = "\\\\.\\DISPLAY" + 2;
devName[2] = "\\\\.\\DISPLAY" + 1;
}
Console.Write("CHANGE PRIMARY DISPLAY TO \\\\.\\DISPLAY" + dn + "\n\n\n");
int deviceID;
WinApi.DisplaySetting_Results result = 0;
//manual gather - NewPrimary name ----------------------------------------------------
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
deviceID = 1;
WinApi.User_32.EnumDisplayDevices(null, deviceID, ref ddOne, 0);
string NewPrimary = devName[1];//ddOne.DeviceName;
//manual gather - OldPrimary name ----------------------------------------------------
WinApi.DISPLAY_DEVICE ddThree = new WinApi.DISPLAY_DEVICE();
ddThree.cb = Marshal.SizeOf(ddThree);
deviceID = 2;
WinApi.User_32.EnumDisplayDevices(null, deviceID, ref ddThree, 0);
string OldPrimary = devName[2];
//ACTION 1 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm1 = NewDevMode();
WinApi.User_32.EnumDisplaySettings(NewPrimary, (int)WinApi.DEVMODE_SETTINGS.ENUM_REGISTRY_SETTINGS, ref ndm1);
WinApi.DEVMODE ndm3 = NewDevMode();
ndm3.dmFields = WinApi.DEVMODE_Flags.DM_POSITION;
ndm3.dmPosition.x = (int)ndm1.dmPelsWidth;
ndm3.dmPosition.y = 0;
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(OldPrimary, ref ndm3, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY | (int)WinApi.DeviceFlags.CDS_NORESET, IntPtr.Zero);
Console.Write("Action 1 result:" + result.ToString());
//ACTION 1 end ----------------------------------------------------------------------------
//ACTION 2 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm2 = NewDevMode();
WinApi.User_32.EnumDisplaySettings(NewPrimary, (int)WinApi.DEVMODE_SETTINGS.ENUM_REGISTRY_SETTINGS, ref ndm2);
WinApi.DEVMODE ndm4 = NewDevMode();
ndm4.dmFields = WinApi.DEVMODE_Flags.DM_POSITION;
ndm4.dmPosition.x = 0;
ndm4.dmPosition.y = 0;
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(NewPrimary, ref ndm4, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_SET_PRIMARY | (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY | (int)WinApi.DeviceFlags.CDS_NORESET, IntPtr.Zero);
Console.Write("Action 2 result:" + result.ToString());
//ACTION 2 end ----------------------------------------------------------------------------
//ACTION 3 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm5 = NewDevMode();
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(OldPrimary, ref ndm5, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY, (IntPtr)null);
Console.Write("Action 3.1 result:" + result.ToString());
WinApi.DEVMODE ndm6 = NewDevMode();
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(NewPrimary, ref ndm6, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_SET_PRIMARY | (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY, IntPtr.Zero);
Console.Write("Action 3.2 result:" + result.ToString());
//ACTION 3 end ----------------------------------------------------------------------------
}
else
{
Console.Write("Error, Invailed\n");
return;
}
}
static void Main(string[] args)
{
List <WinApi.DISPLAY_DEVICE> devices = new List <WinApi.DISPLAY_DEVICE>();
List <WinApi.DEVMODE> devModes = new List <WinApi.DEVMODE>();
bool done = false;
int curID = 0;
do
{
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
WinApi.DISPLAY_DEVICE ddTwo = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
ddTwo.cb = Marshal.SizeOf(ddTwo);
bool t = WinApi.User_32.EnumDisplayDevices(null, curID, ref ddOne, 0);
if (!t)
{
break;
}
t = WinApi.User_32.EnumDisplayDevices(ddOne.DeviceName, 0, ref ddTwo, 0);
ddOne.DeviceString = ddTwo.DeviceString;
WinApi.DEVMODE test = new WinApi.DEVMODE();
WinApi.User_32.EnumDisplaySettings("Test", 4, ref test);
int succ = WinApi.User_32.EnumDisplaySettings(ddOne.DeviceName, (-1), ref test);
devModes.Add(test);
devices.Add(ddOne);
curID++;
} while (!done);
for (int i = 0; i < devices.Count; i++)
{
Console.WriteLine(devices.ElementAt(i));
Console.WriteLine(devModes.ElementAt(i));
}
foreach (System.Windows.Forms.Screen screen in System.Windows.Forms.Screen.AllScreens)
{
Console.WriteLine(screen.DeviceName);
}
Console.WriteLine("---------------------------------------------------------------------------");
Console.WriteLine("Changing: " + devices.ElementAt(1));
Console.WriteLine(devModes.ElementAt(1));
Console.WriteLine("---------------------------------------------------------------------------");
Console.ReadKey();
WinApi.DEVMODE d = devModes.ElementAt(1);
//d.dmFields = WinApi.DEVMODE_Flags.DM_PELSWIDTH | WinApi.DEVMODE_Flags.DM_PELSHEIGHT;
d.dmPelsHeight = 0;
d.dmPelsWidth = 0;
//d.dmFields |= WinApi.DEVMODE_Flags.DM_POSITION;
d.dmPosition.x = 0;
Console.WriteLine("Changing the location to: " + d.dmPosition);
WinApi.DisplaySetting_Results success = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(devices.ElementAt(1).DeviceName, ref d,
(IntPtr)null, ((int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY | (int)WinApi.DeviceFlags.CDS_NORESET), (IntPtr)null);
Console.WriteLine("Success: " + success);
printValues();
Console.ReadKey();
}
public static void SetPrimary(int dn)
{
string[] devName = new string[3];
if (dn == 1 || dn == 2)
{
if (dn == 1)
{
devName[1] = "\\\\.\\DISPLAY" + 1;
devName[2] = "\\\\.\\DISPLAY" + 2;
}
if (dn == 2)
{
devName[1] = "\\\\.\\DISPLAY" + 2;
devName[2] = "\\\\.\\DISPLAY" + 1;
}
Console.Write("CHANGE PRIMARY DISPLAY TO \\\\.\\DISPLAY" + dn + "\n\n\n");
int deviceID;
WinApi.DisplaySetting_Results result = 0;
//manual gather - NewPrimary name ----------------------------------------------------
WinApi.DISPLAY_DEVICE ddOne = new WinApi.DISPLAY_DEVICE();
ddOne.cb = Marshal.SizeOf(ddOne);
deviceID = 1;
WinApi.User_32.EnumDisplayDevices(null, deviceID, ref ddOne, 0);
string NewPrimary = devName[1];//ddOne.DeviceName;
//manual gather - OldPrimary name ----------------------------------------------------
WinApi.DISPLAY_DEVICE ddThree = new WinApi.DISPLAY_DEVICE();
ddThree.cb = Marshal.SizeOf(ddThree);
deviceID = 2;
WinApi.User_32.EnumDisplayDevices(null, deviceID, ref ddThree, 0);
string OldPrimary = devName[2];
//ACTION 1 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm1 = NewDevMode();
WinApi.User_32.EnumDisplaySettings(NewPrimary, (int)WinApi.DEVMODE_SETTINGS.ENUM_REGISTRY_SETTINGS, ref ndm1);
WinApi.DEVMODE ndm3 = NewDevMode();
ndm3.dmFields = WinApi.DEVMODE_Flags.DM_POSITION;
ndm3.dmPosition.x = (int)ndm1.dmPelsWidth;
ndm3.dmPosition.y = 0;
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(OldPrimary, ref ndm3, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY | (int)WinApi.DeviceFlags.CDS_NORESET, IntPtr.Zero);
Console.Write("Action 1 result:" + result.ToString());
//ACTION 1 end ----------------------------------------------------------------------------
//ACTION 2 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm2 = NewDevMode();
WinApi.User_32.EnumDisplaySettings(NewPrimary, (int)WinApi.DEVMODE_SETTINGS.ENUM_REGISTRY_SETTINGS, ref ndm2);
WinApi.DEVMODE ndm4 = NewDevMode();
ndm4.dmFields = WinApi.DEVMODE_Flags.DM_POSITION;
ndm4.dmPosition.x = 0;
ndm4.dmPosition.y = 0;
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(NewPrimary, ref ndm4, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_SET_PRIMARY | (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY | (int)WinApi.DeviceFlags.CDS_NORESET, IntPtr.Zero);
Console.Write("Action 2 result:" + result.ToString());
//ACTION 2 end ----------------------------------------------------------------------------
//ACTION 3 start ----------------------------------------------------------------------------
WinApi.DEVMODE ndm5 = NewDevMode();
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(OldPrimary, ref ndm5, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY, (IntPtr)null);
Console.Write("Action 3.1 result:" + result.ToString());
WinApi.DEVMODE ndm6 = NewDevMode();
result = (WinApi.DisplaySetting_Results)WinApi.User_32.ChangeDisplaySettingsEx(NewPrimary, ref ndm6, (IntPtr)null, (int)WinApi.DeviceFlags.CDS_SET_PRIMARY | (int)WinApi.DeviceFlags.CDS_UPDATEREGISTRY, IntPtr.Zero);
Console.Write("Action 3.2 result:" + result.ToString());
//ACTION 3 end ----------------------------------------------------------------------------
}
else
{
Console.Write("Error, Invailed\n");
return;
}
}
