誰有mouse hook的程式,能貼一點嗎?我做的有問題.

Question

代碼如下:
CLaunchDLLApp theApp;
HHOOK Hook; 
LRESULT CALLBACK LauncherHook(int nCode,WPARAM wParam,LPARAM lParam); 
void SaveLog(char* c); 
DllExport void WINAPI InstallLaunchEv() 
{ 
  Hook=(HHOOK)SetWindowsHookEx(WH_MOUSE, 
  (HOOKPROC)LauncherHook, 
  theApp.m_hInstance, 
  0); 
} LRESULT CALLBACK LauncherHook(int nCode,WPARAM wParam,LPARAM lParam) 
{
  LRESULT Result=CallNextHookEx(Hook,nCode,wParam,lParam); 
  if(nCode==HC_ACTION) 
  { 
if(wParam==WM_RBUTTONDOWN)
 AfxMessageBox("WM_RBUTTONDOWN");
  } 
  return Result; 
}
在單文檔應用程式中加入InstallLaunchEv(),程式運行時,多點擊mouse右鍵幾次,會引起程式羿常或系統當機,大家幫看看,問題出在哪里呢?

Answer 1

http://www.copathway.com/vchelp/type.asp?class_id=1&type_id=25

Answer 2

MOUSEHOOKSTRUCT *mhs = (MOUSEHOOKSTRUCT*) lParam;
在mhs中检测一下鼠标点到哪里了,比如
if(mhs->wHitTestCode!=HTCLIENT)
{...........}
还有
Hook=(HHOOK)SetWindowsHookEx(WH_MOUSE, 
  (HOOKPROC)LauncherHook, 
  theApp.m_hInstance, 
  0); 
改成
Hook=(HHOOK)SetWindowsHookEx(WH_MOUSE, 
  (HOOKPROC)LauncherHook, 
  NULL,
  ::GetCurrentThreadId()); 
试试

Answer 3

謝謝!
我已經改了,但是程式對MOUSE毫無反映,如下:LRESULT __declspec(dllexport)__stdcall  CALLBACK KeyboardProc(
                            int nCode, 
                           WPARAM wParam, 
                            LPARAM lParam)
{
MOUSEHOOKSTRUCT *mhs = (MOUSEHOOKSTRUCT*) lParam; if(HC_ACTION==nCode)
{
if(wParam==WM_RBUTTONUP)
if(mhs->wHitTestCode!=HTCLIENT)
MessageBox(NULL,"hello","ok",MB_OK);
}
}
BOOL __declspec(dllexport)__stdcall installhook()
{//hkb=SetWindowsHookEx(WH_MOUSE,(HOOKPROC)KeyboardProc,hins,0);
hkb=SetWindowsHookEx(WH_MOUSE,(HOOKPROC)KeyboardProc,NULL,::GetCurrentThreadId());
return TRUE;
}

Answer 4

当 nCode==-1时必须要调用CallNextHook
还有KeyboardProc中没有反回值
如果都改对了还不行,再把这句去掉试试if(HC_ACTION==nCode)

Answer 5

thanks!
我是這樣做的,但是會當機,如下:
LRESULT __declspec(dllexport)__stdcall  CALLBACK KeyboardProc(
                            int nCode, 
                           WPARAM wParam, 
                            LPARAM lParam)
{
    if(nCode == HC_ACTION) 
    { 
        // get a pointer to the mouse hook struct. 
        PMOUSEHOOKSTRUCT mhs = (PMOUSEHOOKSTRUCT) lParam; 
        
        // intercept messages for left button down and up
        switch(wParam) 
        { 
            case WM_NCLBUTTONDOWN: 
                {
                    // get the pointer to the main window 
                    CWnd *pWnd =  AfxGetMainWnd(); 

                    if((mhs->hwnd == pWnd->GetSafeHwnd()) 
&& (mhs->wHitTestCode == HTCAPTION)) 
                    { 
                        MessageBox(NULL,"NcRButtonDown","ok",0);
Sleep(100);
                      
                    }
                }
                break;            case WM_NCLBUTTONUP: 
                 {
bNcLButtonDown = FALSE; 
MessageBox(NULL,"NcLButtonUp","ok",0);
}
                break;             case WM_LBUTTONUP: 
                {
                    // get the pointer to the main window 
                    CWnd *pWnd =  AfxGetMainWnd();                 
                    if((mhs->hwnd == pWnd->GetSafeHwnd()) 
&& (bNcLButtonDown == TRUE))
                    {
                 pWnd->PostMessage(WM_NCLBUTTONUP, HTCAPTION, MAKELONG(mhs->pt.x, mhs->pt.y)); 
MessageBox(NULL,"LButtonUp","ok",0);
                        // reset non-client left button down 
                        bNcLButtonDown = FALSE;
                    }
                } 
                break;             default: 
                break; 
        } 
 
}
LRESULT RetVal = CallNextHookEx( hkb, nCode, wParam, lParam ); return  RetVal;
}
謝謝!

Answer 6

死机可能是这句造成的CWnd *pWnd =  AfxGetMainWnd();