private static string GetPrimaryMonitorDeviceName()
{
string name = null;
if (SafeNativeMethods.GetSystemMetrics(NativeConstants.SM_CMONITORS) != 0)
{
NativeStructs.POINT point = new NativeStructs.POINT
{
x = 0,
y = 0
};
IntPtr hMonitor = SafeNativeMethods.MonitorFromPoint(point, NativeConstants.MONITOR_DEFAULTTOPRIMARY);
NativeStructs.MONITORINFOEX monitorInfo = new NativeStructs.MONITORINFOEX
{
cbSize = (uint)Marshal.SizeOf(typeof(NativeStructs.MONITORINFOEX))
};
if (SafeNativeMethods.GetMonitorInfoW(hMonitor, ref monitorInfo))
{
name = monitorInfo.szDeviceName.TrimEnd('\0');
}
}
return(name);
}
/// <summary>
///
/// </summary>
/// <param name="monitor"></param>
/// <param name="hdc"></param>
/// <param name="lprcMonitor"></param>
/// <param name="lParam"></param>
/// <returns></returns>
private static bool MonitorEnumProcCallback(IntPtr monitor, IntPtr hdc, IntPtr lprcMonitor, IntPtr lParam)
{
NativeStructs.MONITORINFOEX info = new NativeStructs.MONITORINFOEX();
NativeMethods.GetMonitorInfo(monitor, info);
_currentMonitors.Add(info);
if ((info.dwFlags & NativeConstants.MONITORINFOF_PRIMARY) == NativeConstants.MONITORINFOF_PRIMARY)
{
_primaryMonitor = info;
}
return(true);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public static NativeStructs.MONITORINFOEX[] GetAllMonitors(out NativeStructs.MONITORINFOEX primaryMonitor)
{
NativeStructs.RECT empty = NativeStructs.RECT.Empty;
NativeStructs.MONITORINFOEX[] monitorArray = null;
lock (_globalLock)
{
_currentMonitors = new List <NativeStructs.MONITORINFOEX>();;
NativeMethods.EnumDisplayMonitors(IntPtr.Zero, null, new NativeMethods.MonitorEnumProc(MultiMonitorHelper.MonitorEnumProcCallback), IntPtr.Zero);
if (_currentMonitors.Count <= 0)
{
throw new InvalidOperationException("No Monitor found.");
}
monitorArray = _currentMonitors.ToArray();
primaryMonitor = _primaryMonitor;
}
return(monitorArray);
}
