Enumerate Display Monitors : Native Windows Function : Windows C# Examples

Enumerate Display Monitors

    
/*
NET  Development  for  Java  Programmers
#  By  Paul  Gibbons
#  ISBN:  1-59059-038-4
#  432  pp.
#  Published:  Jul  2002
*/

  

using  System;
using  System.Runtime.InteropServices;

[  StructLayout(  LayoutKind.Sequential  )  ]
struct  Rect
{
    public  int  left;
    public  int  top;
    public  int  right;
    public  int  bottom;
}

[  StructLayout(  LayoutKind.Sequential  )  ]
struct  MonitorInfo
{
    public  uint  size;
    public  Rect  monitor;
    public  Rect  work;
    public  uint  flags;
}

class  MainClass
{
    delegate  bool  MonitorEnumDelegate(  IntPtr  hMonitor,IntPtr  hdcMonitor,ref  Rect  lprcMonitor,  IntPtr  dwData  );

    [  DllImport(  "user32.dll"  )  ]
    static  extern  bool  EnumDisplayMonitors(  IntPtr  hdc,  IntPtr  lprcClip,  MonitorEnumDelegate  lpfnEnum,  IntPtr  dwData  );

    [  DllImport(  "user32.dll"  )  ]
    static  extern  bool  GetMonitorInfo(  IntPtr  hmon,  ref  MonitorInfo  mi  );
    static  bool  MonitorEnum(  IntPtr  hMonitor,  IntPtr  hdcMonitor,  ref  Rect  lprcMonitor,    IntPtr  dwData  )
    {
        MonitorInfo  mi  =  new  MonitorInfo();
        mi.size  =  (uint)Marshal.SizeOf(  mi  );
        bool  success  =  GetMonitorInfo(  hMonitor,  ref  mi  );

        return  true;
    }

    [STAThread]
    static  void  Main(string[]  args)
    {
        MonitorEnumDelegate  med  =  new  MonitorEnumDelegate(  MonitorEnum  );
        EnumDisplayMonitors(  IntPtr.Zero,  IntPtr.Zero,  med,  IntPtr.Zero  );
    }
}
    
   
  
   

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