🚀 go-pugleaf

Ok, I will try this
thanks for your reply


"Remy Lebeau (TeamB)" <gambit47@yahoo.com> wrote in message
news:3f37de49$1@newsgroups.borland.com...
>
> "Stan" <thewatcher@email.com> wrote in message
> news:3f3771bd@newsgroups.borland.com...
> > my problem comes with the Hook procedure which I do
> > not know how to manipulate, I don't know how send the
> > appropriate message that will contain these desired info.
> > for my applications, I don't know what parameters should
> > I pass to the SendMessage() api, and what should I receive
> > from it ??
>
> Have a look at the WM_COPYDATA message.  You can use it to send any
> arbitrary data to a window.  Simply create a struct that contains your
> desired info, then send a pointer of the struct to your application.  For
> example:
>
>     --- DLL ---
>
>     struct MyInfo
>     {
>         ...
>     };
>
>     MyInfo info;
>     // fill info as needed
>
>     COPYDATASTRUCT cds = {0};
>     cds.dwData = 0x12345678;
>     cds.cbData = sizeof(info);
>     cds.lpData = &info.
>
>     SendMessage(hMyApp, WM_COPYDATA, 0, (LPARAM)&cds);
>
>
>     --- Application ---
>
>     struct MyInfo
>     {
>         ...
>     };
>
>     class TMyForm : public TForm
>     {
>     private:
>         void __fastcall WMCopyData(TMessage &Msg);
>     public:
>         BEGIN_MESSAGE_MAP
>             VCL_MESSAGE_HANDLER(WM_COPYDATA, TMessage, WMCopyData)
>         END_MESSAGE_MAP(TForm)
>     };
>
>     void __fastcall TMyForm::WMCopyData(TMessage &Msg)
>     {
>         COPYDATASTRUCT *cds = (COPYDATASTRUCT*)Msgg.LParam;
>         if( cds->dwData == 0x12345678 )
>         {
>             MyInfo *info = (MyInfo*)cds->lpData;
>             // use info as needed
>             Message.Result = TRUE;
>         }
>         else
>             TForm::Dispatch(&Msg);
>     }
>
>
> Gambit
>
>