/*public static void ChangeResolution(List<DISPLAY_DEVICE> devices)
* {
* DEVMODE DevM1 = CreateDevMode();
* DEVMODE DevM2 = CreateDevMode();
* bool enumResult = false;
* DisplayChangeResultCode changeResult = default(DisplayChangeResultCode);
*
* DevM1.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | DM_POSITION;
*
* enumResult = User32.EnumDisplaySettings(devices[0].DeviceName, User32.ENUM_CURRENT_SETTINGS, ref DevM1);
*
* DevM1.dmPelsWidth = 1024;
* DevM1.dmPelsHeight = 768;
* DevM1.dmDisplayFrequency = 50;
*
* DevM1.dmPositionX = -1024;
* DevM1.dmPositionY = 0;
*
* DevM1.dmDeviceName = devices[0].DeviceName;
*
*
* DevM2.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | DM_POSITION;
*
* enumResult = User32.EnumDisplaySettings(devices[1].DeviceName, User32.ENUM_CURRENT_SETTINGS, ref DevM2);
*
*
* DevM2.dmPelsWidth = 800;
* DevM2.dmPelsHeight = 600;
* DevM2.dmDisplayFrequency = 50;
*
* DevM2.dmPositionX = 0;
* DevM2.dmPositionY = 0;
*
* DevM2.dmDeviceName = devices[1].DeviceName;
*
* changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(devices[0].DeviceName, ref DevM1, IntPtr.Zero, (0), IntPtr.Zero);
*
* if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
* {
* throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
* }
*
* changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(devices[1].DeviceName, ref DevM2, IntPtr.Zero, (CDS_SET_PRIMARY), IntPtr.Zero);
*
* if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
* {
* throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
* }
*
* DEVMODE d = new DEVMODE();
* d.dmSize = (short)Marshal.SizeOf(d);
* changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(null, ref d, IntPtr.Zero, 0, IntPtr.Zero);
*
* if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
* {
* throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
* }
* }*/
public static void ChangeResolution(ref DISPLAY_DEVICE device, int width, int height, int freq, int PositionX, int PositionY)
{
DEVMODE DevM = CreateDevMode();
bool enumResult = false;
DisplayChangeResultCode changeResult = default(DisplayChangeResultCode);
DevM.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | DM_POSITION;
enumResult = User32.EnumDisplaySettings(device.DeviceName, User32.ENUM_CURRENT_SETTINGS, ref DevM);
DevM.dmPelsWidth = width;
DevM.dmPelsHeight = height;
DevM.dmDisplayFrequency = freq;
DevM.dmPositionX = PositionX;
DevM.dmPositionY = PositionY;
DevM.dmDeviceName = device.DeviceName;
changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettings(ref DevM, 0);
if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
{
throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
}
}
public static void ChangeResolution(ref DISPLAY_DEVICE device, int width, int height, short bits)
{
DEVMODE DevM = CreateDevMode();
bool enumResult = false;
DisplayChangeResultCode changeResult = default(DisplayChangeResultCode);
DevM.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;
enumResult = User32.EnumDisplaySettings(device.DeviceName, User32.ENUM_CURRENT_SETTINGS, ref DevM);
DevM.dmPelsWidth = width;
DevM.dmPelsHeight = height;
DevM.dmBitsPerPel = bits;
DevM.dmDeviceName = device.DeviceName;
changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(device.DeviceName, ref DevM, IntPtr.Zero, (0), IntPtr.Zero);
// faild to change, due to a bad mode? try again with a better mode
if (changeResult == DisplayChangeResultCode.DISP_CHANGE_BADMODE)
{
DevM = FindBestSupportedDeviceMode(device, DevM);
changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(device.DeviceName, ref DevM, IntPtr.Zero, (0), IntPtr.Zero);
}
if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
{
throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
}
}
public static void ChangeResolution(ref DISPLAY_DEVICE device, int width, int height, short bits, int freq)
{
DEVMODE DevM = CreateDevMode();
bool enumResult = false;
DisplayChangeResultCode changeResult = default(DisplayChangeResultCode);
DevM.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | DM_DISPLAYFREQUENCY;
enumResult = User32.EnumDisplaySettings(device.DeviceName, User32.ENUM_CURRENT_SETTINGS, ref DevM);
DevM.dmPelsWidth = width;
DevM.dmPelsHeight = height;
DevM.dmBitsPerPel = bits;
DevM.dmDisplayFrequency = freq;
DevM.dmDeviceName = device.DeviceName;
changeResult = (DisplayChangeResultCode)User32.ChangeDisplaySettingsEx(device.DeviceName, ref DevM, IntPtr.Zero, (0), IntPtr.Zero);
if (changeResult != DisplayChangeResultCode.DISP_CHANGE_SUCCESSFUL)
{
throw new User32Exception("Failed to change resolution: " + changeResult.ToString());
}
}
