static bool MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, ref Rect lprcMonitor, IntPtr dwData)
{
List<Monitor> monitors=(List<Monitor>)GCHandle.FromIntPtr(dwData).Target;
monitors.Add(new Monitor(hMonitor, hdcMonitor, lprcMonitor));
//MonitorInfo mi=new MonitorInfo();
//mi.cbSize=(uint)Marshal.SizeOf(mi);
//GetMonitorInfo(hMonitor, ref mi);
return true;
}
/// <summary>
/// Returns a list of all monitors (including invisible pseudo-monitors).
/// </summary>
/// <param name="hdc">The handle to a display device context that defines the visible region of interest.</param>
/// <param name="rect">The region of interest as rectangle in virtual-screen coordinates if <paramref name="hdc"/> is <b>null</b>, otherwise in coordinates relative the the device context.</param>
/// <returns>A list of all monitors.</returns>
public static List<Monitor> GetDisplayMonitors(HDC hdc, Rect rect)
{
List<Monitor> monitors=new List<Monitor>();
GCHandle data=GCHandle.Alloc(monitors);
try
{
EnumDisplayMonitors(hdc, ref rect, MonitorEnumProc, GCHandle.ToIntPtr(data));
}
finally
{
data.Free();
}
return monitors;
}
/// <summary>
/// Initializes the class.
/// </summary>
/// <param name="hMonitor">Handle to the display monitor.</param>
/// <param name="hdcMonitor">Handle to device context.</param>
/// <param name="lprcMonitor">Rectangle with the intersection of the clipping area of the device context and the display monitor rectangle.</param>
public Monitor(HMONITOR hMonitor, HDC hdcMonitor, Rect lprcMonitor)
{
this.hMonitor=hMonitor;
this.hdcMonitor=hdcMonitor;
this.lprcMonitor=lprcMonitor;
}
/// <summary>
/// Returns a list of all monitors (including invisible pseudo-monitors).
/// </summary>
/// <param name="rect">The region of interest as rectangle in virtual-screen coordinates.</param>
/// <returns>A list of all monitors.</returns>
public static List<Monitor> GetDisplayMonitors(Rect rect) { return GetDisplayMonitors(HDC.Zero, rect); }