C#调用WinAPI部分命令

发布时间：2024年01月11日

C#是针对WIndows而生的，开发WIndows应用最快。然而想要让自己程序进阶，就不需深入Windows底层，WinAPI为我们提供了一把利刃。

1、查找窗口句柄

2、查找窗口内子对象

1、查找窗口句柄

[DllImport("user32.dll", EntryPoint = "FindWindow")]
private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);

lpClassName类名，用Spy++工具可以获得

lpWindowName窗口标题，任务栏、任务管理器都可以看到

以上两个参数，可以只写一个，另一个写null

2、查找窗口内子对象

[DllImport("user32.dll", EntryPoint = "FindWindow")]

private static extern IntPtr FindWindowEx( IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow )

如：

ShowWindow((int)FindWindowEx(FindWindow("Shell_TrayWnd", null), IntPtr.Zero, "Start", null), SW_RESTORE); //隐藏开始按钮

3、指定窗口样式

[DllImport("user32.dll")]

SetWindowLong(PPThwnd, GWL_STYLE, s | WS_CHILD);

4、指定窗口扩展样式

SetWindowLong(IntPtr hWnd, GWL_EXSTYLE, WS_EX_TOOLWINDOW);

5、调整窗口大小Z轴（层叠）

[DllImport("User32.dll", CharSet = CharSet.Auto)]

private static extern bool SetWindowPos(IntPtr hWnd, int hWndlnsertAfter, int X, int Y, int cx, int cy, uint Flags);

6、获得窗口样式

[DllImport("user32.dll", EntryPoint = "GetWindowLong")]

public static extern int GetWindowLong(IntPtr hwnd, int nIndex);

7、向窗口发送命令

[DllImport("user32.dll", EntryPoint = "SendMessageA")]

public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

8、指定父窗口

[DllImport("user32.dll")]

private static extern IntPtr SetParent(IntPtr childIntPtr, IntPtr parentIntPtr);

9、获取窗口进程

[DllImport("User32.dll", CharSet = CharSet.Auto)]

public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);//获取进程ID

10、移动及缩放窗口

[DllImport("user32.dll", SetLastError = true)]

public static extern bool MoveWindow(IntPtr hwnd, int x, int y, int cx, int cy, bool repaint);

*窗体被嵌入其它程序后，如果需哟调整位置及大小，就用这个！

11、隐藏任务栏

IntPtr trayHwnd = FindWindow("Shell_TrayWnd", null);

ShowWindow(trayHwnd, 0);

“0”改为“1”，为显示任务栏

12、隐藏任务栏按钮

SetWindowLong((IntPtr)pvm , GWL_EXSTYLE, WS_EX_TOOLWINDOW);    //设置窗口扩展样式为WS_EX_TOOLWINDOW，可以让窗体不在任务栏中显示。

13、WinAPI调用的类含常数定义

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Runtime.InteropServices;
 
namespace APIHelper
{
    /// <summary>
    /// Windows API 函数声明
    /// </summary>
    public class Win32API
    {
        #region .ctor()
        // No need to construct this object
        private Win32API()
        {
        }
        #endregion
 
        #region Constans values
        public const string TOOLBARCLASSNAME = "ToolbarWindow32";
        public const string REBARCLASSNAME = "ReBarWindow32";
        public const string PROGRESSBARCLASSNAME = "msctls_progress32";
        public const string SCROLLBAR = "SCROLLBAR";
        #endregion
 
        #region CallBacks
        public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
        #endregion
 
        #region Kernel32.dll functions
        [DllImport("kernel32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
        public static extern int GetCurrentThreadId();
        #endregion
 
        #region Gdi32.dll functions
        [DllImport("gdi32.dll")]
        static public extern bool StretchBlt(IntPtr hDCDest, int XOriginDest, int YOriginDest, int WidthDest, int HeightDest,
        IntPtr hDCSrc, int XOriginScr, int YOriginSrc, int WidthScr, int HeightScr, uint Rop);
        [DllImport("gdi32.dll")]
        static public extern IntPtr CreateCompatibleDC(IntPtr hDC);
        [DllImport("gdi32.dll")]
        static public extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int Width, int Heigth);
        [DllImport("gdi32.dll")]
        static public extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
        [DllImport("gdi32.dll")]
        static public extern bool BitBlt(IntPtr hDCDest, int XOriginDest, int YOriginDest, int WidthDest, int HeightDest,
        IntPtr hDCSrc, int XOriginScr, int YOriginSrc, uint Rop);
        [DllImport("gdi32.dll")]
        static public extern IntPtr DeleteDC(IntPtr hDC);
        [DllImport("gdi32.dll")]
        static public extern bool PatBlt(IntPtr hDC, int XLeft, int YLeft, int Width, int Height, uint Rop);
        [DllImport("gdi32.dll")]
        static public extern bool DeleteObject(IntPtr hObject);
        [DllImport("gdi32.dll")]
        static public extern uint GetPixel(IntPtr hDC, int XPos, int YPos);
        [DllImport("gdi32.dll")]
        static public extern int SetMapMode(IntPtr hDC, int fnMapMode);
        [DllImport("gdi32.dll")]
        static public extern int GetObjectType(IntPtr handle);
        [DllImport("gdi32")]
        public static extern IntPtr CreateDIBSection(IntPtr hdc, ref BITMAPINFO_FLAT bmi,
        int iUsage, ref int ppvBits, IntPtr hSection, int dwOffset);
        [DllImport("gdi32")]
        public static extern int GetDIBits(IntPtr hDC, IntPtr hbm, int StartScan, int ScanLines, int lpBits, BITMAPINFOHEADER bmi, int usage);
        [DllImport("gdi32")]
        public static extern int GetDIBits(IntPtr hdc, IntPtr hbm, int StartScan, int ScanLines, int lpBits, ref BITMAPINFO_FLAT bmi, int usage);
        [DllImport("gdi32")]
        public static extern IntPtr GetPaletteEntries(IntPtr hpal, int iStartIndex, int nEntries, byte[] lppe);
        [DllImport("gdi32")]
        public static extern IntPtr GetSystemPaletteEntries(IntPtr hdc, int iStartIndex, int nEntries, byte[] lppe);
        [DllImport("gdi32")]
        public static extern uint SetDCBrushColor(IntPtr hdc, uint crColor);
        [DllImport("gdi32")]
        public static extern IntPtr CreateSolidBrush(uint crColor);
        [DllImport("gdi32")]
        public static extern int SetBkMode(IntPtr hDC, BackgroundMode mode);
        [DllImport("gdi32")]
        public static extern int SetViewportOrgEx(IntPtr hdc, int x, int y, int param);
        [DllImport("gdi32")]
        public static extern uint SetTextColor(IntPtr hDC, uint colorRef);
        [DllImport("gdi32")]
        public static extern int SetStretchBltMode(IntPtr hDC, int StrechMode);
        #endregion
 
        #region Uxtheme.dll functions
        [DllImport("uxtheme.dll")]
        static public extern int SetWindowTheme(IntPtr hWnd, string AppID, string ClassID);
        #endregion
 
        #region User32.dll functions
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetDC(IntPtr hWnd);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern IntPtr GetDesktopWindow();
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool ShowWindow(IntPtr hWnd, short State);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool UpdateWindow(IntPtr hWnd);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool SetForegroundWindow(IntPtr hWnd);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, uint flags);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool OpenClipboard(IntPtr hWndNewOwner);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool CloseClipboard();
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool EmptyClipboard();
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern IntPtr SetClipboardData(uint Format, IntPtr hData);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static public extern bool GetMenuItemRect(IntPtr hWnd, IntPtr hMenu, uint Item, ref RECT rc);
        [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
        public static extern IntPtr GetParent(IntPtr hWnd);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref RECT lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref POINT lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref TBBUTTON lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref TBBUTTONINFO lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref REBARBANDINFO lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern void SendMessage(IntPtr hWnd, int msg, int

文章来源:https://blog.csdn.net/dgnankai/article/details/135534854
本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如若内容造成侵权/违法违规/事实不符，请联系我的编程经验分享网邮箱：chenni525@qq.com进行投诉反馈，一经查实，立即删除！