Re: Windows Hooks and Switching Applications

From:
hellokareem@gmail.com
Newsgroups:
microsoft.public.vc.mfc
Date:
3 May 2006 21:59:09 -0700
Message-ID:
<1146718749.302132.80330@j33g2000cwa.googlegroups.com>
sure..
I did one years back...i can't say 100%

HMODULE hDll=::LoadLibrary("HookDll");//your hook dll which u should
create
    HookProc *pHook;
    pHook=(HookProc*)::GetProcAddress(hDll,"HookProc");
    h_global_hook=::SetWindowsHookEx(WH_CBT,(HOOKPROC)pHook,hDll,NULL);
this should be your hook exe side

You have to write hookdll

extern "C" LRESULT PASCAL EXPORT HookProc(int nCode, WPARAM wParam,
LPARAM lParam )
{
    AFX_MANAGE_STATE(AfxGetStaticModuleState());
    try
    {
        CBTACTIVATESTRUCT *myStuct =(CBTACTIVATESTRUCT*)lParam;

        if(nCode<0)return CallNextHookEx(glob_hook,nCode,wParam,lParam);

        if(nCode==HCBT_MINMAX||nCode==HCBT_MOVESIZE||nCode==HCBT_ACTIVATE)//if
active or resize or min max
            //plz reomove un necessorry events
            {
        // char str[100];
            // cnt++;
                //HWND hwnd=myStuct->hWndActive;
                    HWND hwnd=(HWND)wParam;

                ::GetWindowText(hwnd,str,strlen(str));
                //::GetClassName(hwnd,str,strlen(str));

                if(!strcmp(str,"windowcaption"))//instead of window caption , we
//can place any windows text which we want to notify

                {
                    MessageBox(::GetActiveWindow(),"Acive OK","TestHook",0);

                        return 0;
                //}

    }

    }

    catch(...)
    {
    AfxMessageBox("Error In HOOk DLL");
    }
return 0;
}

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