需求是这样,有个程序界面我们需要通过自己的程序持续输入数据,界面如图。
可以获得控件的句柄而用钩子写入值。这里需要用到spy++工具。在VS的工具下有个spy++工具,打开如下图
通过这个工具可以获得窗体的句柄,当然这里获得的句柄只能用于测试,因为.net开发的程序窗体每次打开句柄都会变,都需要重新获得。这个工具的用处在于找一个控件的前一句柄控件和后一句柄控件。
一、引用
//寻找目标进程窗口 [DllImport("USER32.DLL")]public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);[DllImport("USER32.DLL", EntryPoint = "FindWindowEx", SetLastError = true)]public static extern IntPtr FindWindowEx(IntPtr hwndParent, uint hwndChildAfter,string lpszClass, string lpszWindow);//设置进程窗口到最前 [DllImport("USER32.DLL")]public static extern bool SetForegroundWindow(IntPtr hWnd);//模拟键盘事件 [DllImport("USER32.DLL")]public static extern void keybd_event(Byte bVk, Byte bScan, Int32 dwFlags, Int32 dwExtraInfo);public delegate bool CallBack(IntPtr hwnd, int lParam);[DllImport("USER32.DLL")]public static extern int EnumChildWindows(IntPtr hWndParent, CallBack lpfn, int lParam);//给CheckBox发送信息[DllImport("USER32.DLL", EntryPoint = "SendMessage", SetLastError = true, CharSet = CharSet.Auto)]public static extern int SendMessage(IntPtr hwnd, UInt32 wMsg, int wParam, int lParam);//给Text发送信息[DllImport("USER32.DLL", EntryPoint = "SendMessage")]private static extern int SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, string lParam);[DllImport("USER32.DLL")]public static extern IntPtr GetWindow(IntPtr hWnd, int wCmd);
二、方法
公共方法
////// 查找窗体上控件句柄/// /// 父窗体句柄/// 控件标题(Text)/// 设定是否在子窗体中查找///控件句柄,没找到返回IntPtr.Zero private static IntPtr FindWindowEx(IntPtr hwnd, string lpszWindow, bool bChild){ IntPtr iResult = IntPtr.Zero; // 首先在父窗体上查找控件 iResult = FindWindowEx(hwnd, 0, null, lpszWindow); // 如果找到直接返回控件句柄 if (iResult != IntPtr.Zero) return iResult; // 如果设定了不在子窗体中查找 if (!bChild) return iResult; // 枚举子窗体,查找控件句柄 int i = EnumChildWindows( hwnd, (h, l) => { IntPtr f1 = FindWindowEx(h, 0, null, lpszWindow); if (f1 == IntPtr.Zero) return true; else { iResult = f1; return false; } }, 0); // 返回查找结果 return iResult;}////// 输入回车/// private static void PrintEnter(){ keybd_event(Convert.ToByte(13), 0, 0, 0); keybd_event(Convert.ToByte(13), 0, 2, 0);}
获得窗体句柄
IntPtr wcHandle = FindWindow(null, "窗体名称");if (wcHandle != IntPtr.Zero){ //设置游戏窗口到最前 SetForegroundWindow(wcHandle);}
获得有Title的控件句柄
uint BM_GETCHECK = 0xF0;uint BST_CHECKED = 0xF1;IntPtr weightIntPtr = FindWindowEx(wcHandle, "输入重量[&H]", true);if (weightIntPtr != IntPtr.Zero){ //获得Checkbox值 int i = SendMessage(weightIntPtr, BM_GETCHECK, 0, 0); //更改CheckBox值 SendMessage(weightIntPtr, BST_CHECKED, 1, 0);}
获得没Title的控件句柄
public enum WindowSearch{ GW_HWNDFIRST = 0, //同级别第一个 GW_HWNDLAST = 1, //同级别最后一个 GW_HWNDNEXT = 2, //同级别下一个 GW_HWNDPREV = 3, //同级别上一个 GW_OWNER = 4, //属主窗口 GW_CHILD = 5 //子窗口}获取与指定窗口具有指定关系的窗口的句柄 }IntPtr waybill = GetWindow(waybillIntPtr, (int)WindowSearch.GW_HWNDNEXT);SendMessage(waybill, WM_SETTEXT, IntPtr.Zero, waybillValue);
这里完成了我们的需求,改变了窗体中选择框和Text文本框的值。