SendMessage(hProcWnd,WM_USER+200,2000,0); //用于激活客户程序的自定义消息

                                }

        return(fEatKeystroke ? 1 : CallNextHookEx(NULL, nCode, wParam,

                lParam));

}

 

 

此处为捕获、屏蔽系统功能热键的回调函数，用户可根据需要添加修改需要屏蔽的按键。

//屏蔽Ctrl+Esc/Alt+Tab/Win/F1/Alt+Esc等功能按键------------------------------------------------------------------

LRESULT CALLBACK ShieldKeyProc(int nCode,WPARAM wParam,LPARAM lParam)

{

        bool fEatKeystroke = FALSE;

        //PKBDLLHOOKSTRUCT p = NULL;

        if (nCode == HC_ACTION)

                {

                switch (wParam) {

                case WM_KEYDOWN:  case WM_SYSKEYDOWN:

                case WM_KEYUP:    case WM_SYSKEYUP:

                        PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;

                        fEatKeystroke =

                        (p->vkCode==VK_F1)||//F1

                        ((p->vkCode == VK_TAB) && ((p->flags & LLKHF_ALTDOWN) != 0))|| //Alt+Tab

                        ((p->vkCode == VK_ESCAPE) && ((p->flags & LLKHF_ALTDOWN) != 0)) || //Alt+Esc

                    ((p->vkCode == VK_ESCAPE) && ((GetKeyState(VK_CONTROL) & 0x8000) != 0)) || //Ctrl+Esc

                     (((GetKeyState(VK_CONTROL) & 0x8000) != 0) && (p->vkCode == VK_SPACE))|| //Ctrl+Space

          (((GetKeyState(VK_CONTROL) & 0x8000) != 0) && ((GetKeyState(VK_SHIFT) & 0x8000) != 0));

                        break;

                                }

                 }

     return(fEatKeystroke ? 1 : CallNextHookEx(NULL, nCode, wParam,

            lParam));

}                       

 

这个函数负责根据客户端调用参数，向系统注册、注销HOOK。HOOK必须在不要的时候卸载！

//HWND hWnd：客户端程序调用窗体的句柄,bool nCode：挂还是不挂HOOK的标志,bool bWhich：挂哪个HOOK的标志

char _stdcall ActivateKey(HWND hWnd,bool nCode,bool bWhich)

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