How can I set up a CBT hook on a Win32 console win

问题:

I've been trying to set up a CBT hook for my C++ Console application with the following code:

 ...includes...

 typedef struct _HOOKDATA
 {
    int type;
    HOOKPROC hookproc;
    HHOOK hhook;
 }_HOOKDATA;

 _HOOKDATA hookdata;

 //CBT
 LRESULT CALLBACK CBTProc(int code, WPARAM wParam, LPARAM lParam)
 { 
    //do not proccess message
    if(code < 0)
    {
       cout<<"code less than 0"<<endl;
       return CallNextHookEx(hookdata.hhook,code,wParam,lParam);
    }

    switch(code)
   {
      case HCBT_ACTIVATE:
           break;
      case HCBT_CREATEWND:
           cout<<"CREATEWND"<<endl;
           break;
      case HCBT_MINMAX:
           cout<<"MINMAX"<<endl;
           break;
      default: //unknown
           cout<<"DEFAULT"<<endl;
           break;
   }

   return CallNextHookEx(hookdata.hhook, code, wParam, lParam);
}

int main()
{
   hookdata.type = WH_CBT; 
   hookdata.hookproc = CBTProc; 
   hookdata.hhook = ::SetWindowsHookEx(hookdata.type, CBTProc, 
                                    GetModuleHandle( 0 ), GetCurrentThreadId());

   if(hookdata.hhook == NULL)
   {
     cout<<"FAIL"<<endl;
     system("pause");
   }

   system("pause");
   return 0;
}

The program seems to be working because there is not compile errors nor run time errors. Also I do not get a 'FAIL' message stated in the main() function meaning SetWindowHookEx is working OK. However, I don't get any of the messages stated in the CBTProc function; not even the 'DEFAULT' message. Can anyone pin-point what is the logic error in the code?

Thanks.

回答1:

The problem is that SetWindowHookEx is based upon the Win32 message handling model. Console windows are children of the Kernel itself and do not create their own message pumps or windows.

AFAIK doing what you want directly is not possible.