apewer-dotnet/Apewer/Internals/Interop/Gdi32.cs

using System;
using System.Runtime.InteropServices;

namespace Apewer.Internals.Interop
{

    [System.Security.SecuritySafeCritical]
    internal class Gdi32
    {

        /// <summary>
        /// 
        /// </summary>
        /// <param name="hdc"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        public static extern IntPtr CreateCompatibleDC(IntPtr hdc);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="x1"></param>
        /// <param name="y1"></param>
        /// <param name="x2"></param>
        /// <param name="y2"></param>
        /// <param name="x3"></param>
        /// <param name="y3"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll")]
        public static extern int CreateRoundRectRgn(int x1, int y1, int x2, int y2, int x3, int y3);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="hdc"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        public static extern int DeleteDC(IntPtr hdc);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="hobj"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        public static extern int DeleteObject(IntPtr hobj);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="lpxform"></param>
        /// <param name="ncount"></param>
        /// <param name="rgndata"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        public static extern IntPtr ExtCreateRegion(IntPtr lpxform, uint ncount, IntPtr rgndata);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="hdc"></param>
        /// <param name="hobj"></param>
        /// <returns></returns>
        [DllImport("gdi32.dll", ExactSpelling = true)]
        public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hobj);

    }

}