DLLImport.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace ClassBoard
{
    public static class DllImports
    {
        // 这些函数是用来读写ini的
        [DllImport("kernel32")]
        public static extern int GetPrivateProfileString(string section, string key, string defVal, StringBuilder retVal, int size, string filePath);

        [DllImport("kernel32")]
        public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

        /// <summary>    
        /// 读取INI文件    
        /// </summary>    
        /// <param name="section">项目名称(如 [section] )</param>    
        /// <param name="skey">键</param>   
        /// <param name="path">路径</param>
        public static string IniReadValue(string section, string skey, string path)
        {
            StringBuilder temp = new StringBuilder(500);
            int i = GetPrivateProfileString(section, skey, "", temp, 500, path);
            return temp.ToString();
        }
        /// <summary>
        /// 写入ini文件
        /// </summary>
        /// <param name="section">项目名称</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="path">路径</param>
        public static void IniWrite(string section, string key, string value, string path)
        {
            WritePrivateProfileString(section, key, value, path);
        }

        // 这些函数是用来设置壁纸的
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr GetForegroundWindow();
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll")]
        public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);

        [DllImport("user32.dll")]
        public static extern IntPtr SendMessageTimeout(IntPtr hwnd, uint msg, IntPtr wParam, IntPtr lParam, uint fuFlage, uint timeout, IntPtr result);
        //public static extern IntPtr SendMessageTimeout(IntPtr hWnd, int uMsg, int wParam, int lParam, int fuFlags, int uTimeout, out StringBuilder lpdwResult);

        [DllImport("user32.dll")]
        public static extern bool ShowWindow(IntPtr hWnd, uint nCmdShow);

        [DllImport("user32.dll")]
        public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

        [DllImport("user32.dll")]
        public static extern IntPtr GetParent(IntPtr hWnd);

        // 查找窗口的委托 查找逻辑
        public delegate bool EnumWindowsProc(IntPtr hwnd, IntPtr lParam);
        [DllImport("user32.dll")]
        public static extern bool EnumWindows(EnumWindowsProc proc, IntPtr lParam);

        // Task view
        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);
    }
}