Have anyone have an example of windows "Global Hook" procedure ?

[suntisuka]

Hello, I'm trying to create a Global Hook procedure to capture windows message WM_GETMESSAGE from any windows and any application in my desktop. What I have is sample code that only hook to GUI created by current running process itself. If you have such as code, could you share it here. I really need it.

Thank you.

[MikahS]

Have a look at _WinAPI_SetWindowsHookEx.

[Danyfirex]

You must create a dll. then use it with _winapi_setwindowhookEx.

So maybe something like:

$hLib=_WinAPI_LoadLibrary("yourhooklibrary.dll")
$pProAddress = _WinAPI_GetProcAddress($hLib,"yourhookprocedure")
$g_hHook = _WinAPI_SetWindowsHookEx($WH_GETMESSAGE, $pProAddress , $hLib)

;yourhookprocedure could look like

   ; MSG *lpmsg;

   ; if( ncode < 0 ) return CallNextHookEx( NULL, ncode, wParam, lParam );

    ;lpmsg = (MSG *)lParam;

    ;if((lpmsg ->message) == WM_KEYDOWN)
    ;{
    ;Do Something
    ;  }

    ;return CallNextHookEx( NULL, ncode, wParam, lParam );

Saludos

 

 

[guinness]

In my signature I have one example. Just find it using "hook" as the search term.

[Danyfirex]

@guinness  I'm almost sure that with RegisterWindowMessage will not handle WM_GETMESSAGE as suntisuka means.

 

Saludos

[suntisuka]

Thanks for every replies,

MikahS, I modify code from _WinAPI_SetWindowsHookEx example to capture $WH_GETMESSAGE instead. I reduce code in _KeyProc function to show only word "_KeyProc". But it doesn't work. Error message "Cannot set nonlocal hook without a module handle." appears on line _WinAPI_SetWindowsHookEx( ). But I don't know why capture $WH_KEYBOARD_LL in original example works !

Danyfirex, This mean I must use other programming languages to create .DLL for Hook Procedure ? If so, and because Main function of my program is in that .DLL, I should use that language for whole of my program. It is better than use two languages for this project. But that is a hard work for me because I never use VB6, VB.NET or C++

 

 

[Danyfirex]

Yes. 

saludos

[LarsJ]

suntisuka, You can find inspiration for the DLL in this AutoIt example.