Elight.Utility/PopupTool/UnsafeMethods.cs

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#if NETFRAMEWORK || WINDOWS
using System;
using System.Drawing;
using System.Runtime.InteropServices;

internal class UnsafeMethods
{
    [DllImport("user32.dll")]
    public static extern IntPtr GetWindowDC(IntPtr hWnd);

    [DllImport("user32.dll")]
    public static extern int ReleaseDC(IntPtr hwnd, IntPtr hDC);

    [DllImport("user32")]
    public static extern bool TrackMouseEvent(ref UnsafeMethods.TRACKMOUSEEVENT lpEventTrack);

    [DllImport("user32.dll")]
    public static extern bool SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

    internal static int HIWORD(int n)
    {
        return n >> 16 & 65535;
    }

    internal static int HIWORD(IntPtr n)
    {
        return UnsafeMethods.HIWORD((int)((long)n));
    }

    internal static int LOWORD(int n)
    {
        return n & 65535;
    }

    internal static int LOWORD(IntPtr n)
    {
        return UnsafeMethods.LOWORD((int)((long)n));
    }

    public const int WM_LBUTTONDOWN = 513;

    public const int WM_RBUTTONDOWN = 516;

    public const int WM_MBUTTONDOWN = 519;

    public const int WM_NCLBUTTONDOWN = 161;

    public const int WM_NCRBUTTONDOWN = 164;

    public const int WM_NCMBUTTONDOWN = 167;

    public const int WM_NCCALCSIZE = 131;

    public const int WM_NCHITTEST = 132;

    public const int WM_NCPAINT = 133;

    public const int WM_NCACTIVATE = 134;

    public const int WM_MOUSELEAVE = 675;