广州建站服务,ui培训一般多少钱,泉州网站建设公司首选公司哪家好,网站改版多少钱在VSTO应用程序中有时为了处理一些快捷按键操作等实现一些特殊的功能#xff0c;此时需要对键盘进行挂钩#xff0c;此时使用P/Invoke函数实现#xff0c;参考如下#xff1a; VSTO加载和卸载时进行钩子的初始化和卸载 代码 KeyboardHook hook;privatevoidThisAddIn_Startu…在VSTO应用程序中有时为了处理一些快捷按键操作等实现一些特殊的功能此时需要对键盘进行挂钩此时使用P/Invoke函数实现参考如下 VSTO加载和卸载时进行钩子的初始化和卸载 代码 KeyboardHook hook;private void ThisAddIn_Startup(object sender, System.EventArgs e) { hook new KeyboardHook(); hook.InitHook(); }private void ThisAddIn_Shutdown(object sender, System.EventArgs e) { hook.UnHook(); } }//钩子具体处理逻辑是 class KeyboardHook {#region (invokestuff) [DllImport(kernel32.dll)]static extern uint GetCurrentThreadId(); [DllImport(user32.dll)]static extern IntPtr SetWindowsHookEx(int code, HookProcKeyboard func, IntPtr hInstance, uint threadID); [DllImport(user32.dll)]static extern bool UnhookWindowsHookEx(IntPtr hhk); [DllImport(user32.dll)]static extern int CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);#endregion#region constansprivate const int WH_KEYBOARD 2;private const int HC_ACTION 0;#endregiondelegate int HookProcKeyboard(int code, IntPtr wParam, IntPtr lParam);private HookProcKeyboard KeyboardProcDelegate null;private IntPtr khook;bool doing false;public void InitHook() {uint id GetCurrentThreadId();//init the keyboard hook with the thread id of the Visual Studio IDE this.KeyboardProcDelegate new HookProcKeyboard(this.KeyboardProc); khook SetWindowsHookEx(WH_KEYBOARD, this.KeyboardProcDelegate, IntPtr.Zero, id); }public void UnHook() {if (khook ! IntPtr.Zero) { UnhookWindowsHookEx(khook); } }private int KeyboardProc(int code, IntPtr wParam, IntPtr lParam) {try {if (code ! HC_ACTION) {return CallNextHookEx(khook, code, wParam, lParam); }if ((int)wParam (int)Keys.Z ((int)lParam (int)Keys.Alt) ! 0) {if (!doing) { doing true; MessageBox.Show(Captured); doing false; } } }catch { }return CallNextHookEx(khook, code, wParam, lParam); } }
