static extern DISP_CHANGE ChangeDisplaySettingsEx(string lpszDeviceName,
ref DEVMODE lpDevMode, IntPtr hwnd, uint dwflags, IntPtr lParam);
public void GetDisplayInfo()
{
ddActive.dmSize = (short)Marshal.SizeOf(ddActive);
ddInactive.dmSize = (short)Marshal.SizeOf(ddInactive);
uint iDeviceCntr = 0;
DISPLAY_DEVICE dd = new DISPLAY_DEVICE();
dd.cb = Marshal.SizeOf(dd);
while (EnumDisplayDevices(null, iDeviceCntr, ref dd, 0))
{
DEVMODE dMode = new DEVMODE();
dMode.dmSize = (short)Marshal.SizeOf(dMode);
if (EnumDisplaySettings(dd.DeviceName, ENUM_REGISTRY_SETTINGS, ref dMode))
{
if (dMode.dmPelsHeight > 0 && dMode.dmPelsWidth > 0)
{
if ((dd.StateFlags & DisplayDeviceStateFlags.PrimaryDevice) ==
DisplayDeviceStateFlags.PrimaryDevice)
{
ddActive = dMode;
szActiveDeviceName = dd.DeviceName;
}
else
{
ddInactive = dMode;
szInactiveDeviceName = dd.DeviceName;
}
}
}
iDeviceCntr++;
}
}
static extern DISP_CHANGE ChangeDisplaySettingsEx(string lpszDeviceName,
ref DEVMODE lpDevMode, IntPtr hwnd, uint dwflags, IntPtr lParam);
public static extern bool EnumDisplaySettings(string deviceName,
int modeNum, ref DEVMODE devMode);
public static extern bool EnumDisplaySettings(string deviceName,
int modeNum, ref DEVMODE devMode);
