sendMessage

[DllImport("user32.dll",   EntryPoint="SendMessageA")]
  		private static extern int SendMessage(IntPtr hwnd, uint wMsg, uint wParam, uint lParam);
  		[DllImport("user32.dll")]
 		private static extern int ReleaseCapture();

//move

　　　　　　ReleaseCapture();
　　　　　　SendMessage((sender as Control).Handle, 0x00a1, 2, 0);
　　　　　　SendMessage((sender as Control).Handle, 0x0202, 0, 0);

  

/* 
 0---------1---------2


 3-------------------4

 
 5---------6---------7
 
 */     
	case 0:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF004, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 1:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF003, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 2:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF005, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 3:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF001, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 4:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF002, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 5:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF007, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 6:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF006, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}
	case 7:{
		ReleaseCapture();
		SendMessage(panel1.Handle, 0x0112, 0xF008, 0);
		SendMessage(panel1.Handle, 0x0202, 0, 0);
		break;
	}