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external hooking/subclassing

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  • December 12, 2006 at 9:34 am #191331
    BattleStar-Galactica
    Member

    in your callback function send message back to your window handle

    something like this

    LRESULT CALLBACK GetMsgProc (int nCode, WPARAM wParam, LPARAM lParam)
{
if (nCode < 0)
{
return CallNextHookEx(hmsgHooks, nCode, wParam, lParam);
}
else
{
SendNotifyMessage(hWndyourhandletoreceivemessagehere, msg->message,msg->wParam,msg->lParam);

}
return CallNextHookEx(hmsgHooks, nCode, wParam, lParam);
}

    hope you can understand that, hWndyourhandletoreceivemessagehere is the window handle that you do the subclassing

    the hint it’s you send back message to your handle

    December 12, 2006 at 9:40 am #191330
    BattleStar-Galactica
    Member

    eh you want to know if the message is sent by sendmessage or postmessage ❓

    I dont know maybe dody know

    December 12, 2006 at 11:51 am #191329
    nooob
    Member

    great nano….now the picture is emerging….so you have to subclass something if you want to monitor some kind of message….

    ok got it thx alot

    nooob

    December 12, 2006 at 12:17 pm #191328
    BattleStar-Galactica
    Member

    it depend on what you want to do if you want to modify the message, you can do it directly in your dll, like on WM_DESTROY and you dont want that window to destroy on that message , you can put it to null 😆 something like that I never tested it

    December 12, 2006 at 2:24 pm #191327
    nooob
    Member

    ye dude…got all…lol

    ty dude

    December 12, 2006 at 3:46 pm #191326
    Dody
    Member

    in order to trace the Postmessage and Sendmessage you need to hook the API calls, this is a harder task than what you are starting with, I suggest you keep your trying with something easier until you got it working, then I can provide you with some usefull links according hooking api calls

    good luck

    December 12, 2006 at 6:43 pm #191325
    nooob
    Member

    ok dody…i wil proceed with easy stuff…for now because i still got to get alot before i try the hard ones

    thank you

    June 21, 2013 at 1:07 pm #191324
    Coulomb
    Member

    Using the direct-call subclassing, your subclass handlers will look like this:

    LRESULT CALLBACK
mySubclassHandler( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_whatever:
// ... handlers look like this
break; // continue with default handler
case WM_other:
// ... handlers look like this
return value; // value as per message specification
//...
} //*msg*/
return CallWindowProc(superClassHandler, hwnd, msg, wParam, lParam);
}

    There are only three ways of subclassing in windows.

    1. direct-call subclassing << — Above example
    2. superclass-driven subclassing
    3. “classic” subclassing << — Most common in windows.

    There are some terms you can google 🙂

    Ill post more if people want me too.

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