C#調(diào)用Windows API實(shí)現(xiàn)自動(dòng)登錄
設(shè)計(jì)初衷：
公司為了安全性考慮，不讓密碼被太多人知道，所以想實(shí)現(xiàn)一個(gè)自動(dòng)登錄的模塊。
設(shè)計(jì)思想：
主要是通過C#調(diào)用Windows API中的一些方法，找到目標(biāo)窗口和進(jìn)程之后把保存在數(shù)據(jù)庫中的用戶名密碼自動(dòng)填入輸入框中，并登錄。
設(shè)計(jì)步驟：
一、調(diào)用Windows API。
C#調(diào)用Windows API方法如下：
1、引入命名空間：using System.Runtime.InteropServices;
2、引用需要使用的方法，格式：[DllImport("DLL文件")]方法的聲明;
- [DllImport("user32.dll")]private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
- [DllImport("user32.dll")]private static extern bool SetForegroundWindow(IntPtr hWnd);
- [DllImport("user32.dll")]private static extern IntPtr FindWindow(string lpClassName,string lpWindowName);
- [DllImport("user32.dll")]private static extern int SendMessage(IntPtr hWnd,int Msg,int wParam,int lParam);
- [DllImport("user32.dll")]private static extern bool SetCursorPos(int X, int Y);
- [DllImport("user32.dll")]private static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);
- [DllImport("user32.dll")]private static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint dwExtraInfo);
- [DllImport("user32.dll")]private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndlnsertAfter, int X, int Y, int cx, int cy, uint Flags);
- //ShowWindow參數(shù)
- private const int SW_SHOWNORMAL = 1;
- private const int SW_RESTORE = 9;
- private const int SW_SHOWNOACTIVATE = 4;
- //SendMessage參數(shù)
- private const int WM_KEYDOWN = 0X100;
- private const int WM_KEYUP = 0X101;
- private const int WM_SYSCHAR = 0X106;
- private const int WM_SYSKEYUP = 0X105;
- private const int WM_SYSKEYDOWN = 0X104;
- private const int WM_CHAR = 0X102;
二、找到目標(biāo)窗口
1)、根據(jù)窗口的標(biāo)題得到句柄
IntPtr myIntPtr = FindWindow(null,"窗口名"); //null為類名，可以用Spy++得到，也可以為空
ShowWindow(myIntPtr, SW_RESTORE); //將窗口還原
SetForegroundWindow(myIntPtr); //如果沒有ShowWindow，此方法不能設(shè)置最小化的窗口
2)、遍歷所有窗口得到句柄
1 定義委托方法CallBack，枚舉窗口API（EnumWindows），得到窗口名API（GetWindowTextW）和得到窗口類名API（GetClassNameW）
- public delegate bool CallBack(int hwnd, int lParam);
- [DllImport("user32")]public static extern int EnumWindows(CallBack x, int y);
- [DllImport("user32.dll")]private static extern int GetWindowTextW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount);
- [DllImport("user32.dll")]private static extern int GetClassNameW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount);
2 調(diào)用EnumWindows遍歷窗口
- CallBack myCallBack = new CallBack(Recall);
- EnumWindows(myCallBack, 0);
3 回調(diào)方法Recall
- public bool Recall(int hwnd, int lParam)
- {
- StringBuilder sb = new StringBuilder(256);
- IntPtr PW = new IntPtr(hwnd);
- GetWindowTextW(PW,sb,sb.Capacity); //得到窗口名并保存在strName中
- string strName = sb.ToString();
- GetClassNameW(PW,sb,sb.Capacity); //得到窗口類名并保存在strClass中
- string strClass = sb.ToString();
- if (strName.IndexOf("窗口名關(guān)鍵字") >= 0 && strClass.IndexOf("類名關(guān)鍵字") >= 0)
- {
- return false; //返回false中止EnumWindows遍歷
- }
- else
- {
- return true; //返回true繼續(xù)EnumWindows遍歷
- }
- }
3)、打開窗口得到句柄
1 定義設(shè)置活動(dòng)窗口API（SetActiveWindow），設(shè)置前臺(tái)窗口API（SetForegroundWindow）
- [DllImport("user32.dll")]static extern IntPtr SetActiveWindow(IntPtr hWnd);
- [DllImport("user32.dll")][return: MarshalAs(UnmanagedType.Bool)]static extern bool SetForegroundWindow(IntPtr hWnd);
2 打開窗口
- Process proc = Process.Start(@"目標(biāo)程序路徑");
- SetForegroundWindow(proc.MainWindowHandle);
三、向指定的窗口輸入數(shù)據(jù)
1 利用發(fā)送消息API（SendMessage）向窗口發(fā)送數(shù)據(jù)
- InputStr(myIntPtr, _GameID); //輸入游戲ID
- SendMessage(myIntPtr, WM_SYSKEYDOWN, 0X09, 0); //輸入TAB（0x09）
- SendMessage(myIntPtr, WM_SYSKEYUP, 0X09, 0);
- InputStr(myIntPtr, _GamePass); //輸入游戲密碼
- SendMessage(myIntPtr, WM_SYSKEYDOWN, 0X0D, 0); //輸入ENTER（0x0d）
- SendMessage(myIntPtr, WM_SYSKEYUP, 0X0D, 0);
- /// < summary>
- /// 發(fā)送一個(gè)字符串
- /// < /summary>
- /// < param name="myIntPtr">窗口句柄< /param>
- /// < param name="Input">字符串< /param>
- public void InputStr(IntPtr myIntPtr, string Input)
- {
- byte[] ch = (ASCIIEncoding.ASCII.GetBytes(Input));
- for (int i = 0; i < ch.Length; i++)
- {
- SendMessage(PW, WM_CHAR, ch, 0);
- }
- }
2 利用鼠標(biāo)和鍵盤模擬向窗口發(fā)送數(shù)據(jù)
- SetWindowPos(PW, (IntPtr)(-1), 0, 0, 0, 0, 0x0040 | 0x0001); //設(shè)置窗口位置
- SetCursorPos(476, 177); //設(shè)置鼠標(biāo)位置
- mouse_event(0x0002, 0, 0, 0, 0); //模擬鼠標(biāo)按下操作
- mouse_event(0x0004, 0, 0, 0, 0); //模擬鼠標(biāo)放開操作
- SendKeys.Send(_GameID); //模擬鍵盤輸入游戲ID
- SendKeys.Send("{TAB}"); //模擬鍵盤輸入TAB
- SendKeys.Send(_GamePass); //模擬鍵盤輸入游戲密碼
- SendKeys.Send("{ENTER}"); //模擬鍵盤輸入ENTER
另：上面還提到了keybd_event方法，用法和mouse_event方法類似，作用和SendKeys.Send一樣。
這樣，就實(shí)現(xiàn)了C#調(diào)用Windows API自動(dòng)登錄。【編輯推薦】
