source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Navigation/MessagesHelper.cs @ 12503

using System;
using System.Windows;

namespace Microsoft.Research.DynamicDataDisplay.Navigation
{
    /// <summary>Helper class to parse Windows messages</summary>
  internal static class MessagesHelper {
    internal static int GetXFromLParam(IntPtr lParam) {
      return LOWORD(lParam.ToInt32());
    }

    internal static int GetYFromLParam(IntPtr lParam) {
      return HIWORD(lParam.ToInt32());
    }

    internal static Point GetMousePosFromLParam(IntPtr lParam) {
      return new Point(GetXFromLParam(lParam), GetYFromLParam(lParam));
    }

    internal static int GetWheelDataFromWParam(IntPtr wParam) {
      return HIWORD(wParam.ToInt32());
    }

    internal static short HIWORD(int i) {
      return (short)((i & 0xFFFF0000) >> 16);
    }

    internal static short LOWORD(int i) {
      return (short)(i & 0x0000FFFF);
    }
  }
}