I agree
----- Original Message -----
From: "Laurent ROCHER" <[EMAIL PROTECTED]>
To: "Steve Pick" <[EMAIL PROTECTED]>; "Win32 GUI Hackers"
<[email protected]>
Sent: Friday, November 21, 2003 6:31 PM
Subject: Re: [perl-win32-gui-hackers] Fix for PeekMessage
>
> For "A" problem, i don't think it's a else problem.
>
> You can call PeekMessage without a message parameter.
> In this case message == &PL_sv_undef, and no warming it's necessary.
>
> If you specify a message parameter, then we need a reference (SvROK) and
> must be a Array reference.
> I think it's better to move SvROK(message) in inner if, like this :
>
> BOOL
> PeekMessage(handle, min=0, max=0, message=&PL_sv_undef)
> HWND handle
> UINT min
> UINT max
> SV* message
> PREINIT:
> MSG msg;
> CODE:
> ZeroMemory(&msg, sizeof(msg));
> RETVAL = PeekMessage(&msg, handle, min, max, PM_NOREMOVE);
> if(message != &PL_sv_undef) {
> if(SvROK(message) && SvTYPE(SvRV(message)) == SVt_PVAV) {
> av_clear((AV*) SvRV(message));
> av_push((AV*) SvRV(message), newSViv((long) msg.hwnd));
> av_push((AV*) SvRV(message), newSViv(msg.message));
> av_push((AV*) SvRV(message), newSViv(msg.wParam));
> av_push((AV*) SvRV(message), newSViv(msg.lParam));
> av_push((AV*) SvRV(message), newSViv(msg.time));
> av_push((AV*) SvRV(message), newSViv(msg.pt.x));
> av_push((AV*) SvRV(message), newSViv(msg.pt.y));
> } else {
> if(PL_dowarn) warn("Win32::GUI: fourth parameter to
PeekMessage
> is not an array reference");
> }
> }
> OUTPUT:
> RETVAL
>
> Laurent.
>
> ----- Original Message -----
> From: "Steve Pick" <[EMAIL PROTECTED]>
> To: "Win32 GUI Hackers" <[email protected]>
> Sent: Friday, November 21, 2003 2:50 AM
> Subject: [perl-win32-gui-hackers] Fix for PeekMessage
>
>
> >
> > You'll notice PeekMessage A) doesnt warn about non-references even
though
> > the warning code is there and B) Yields a ton of "attempt to free
> > unreferenced scalar" errors. The problem was an else{} in the wrong
place,
> > and making array values mortal so they got cleaned up before they ever
hit
> > your perl program, so here's it fixed.
> >
> >
>
###########################################################################
> > # (@)METHOD:PeekMessage([MIN, MAX, MESSAGE])
> > # Inspects the window's message queue and eventually returns data
> > # about the message it contains; it can optionally check only for
> > message
> > # identifiers in the range MIN..MAX; the last MESSAGE parameter, if
> > # specified, must be an array reference.
> > # If a message is found, the function puts in that array 7 elements
> > # containing:
> > # - the handle of the window to which the message is addressed
> > # - the message identifier
> > # - the wParam argument
> > # - the lParam argument
> > # - the time when message occurs
> > # - the x coordinate at which message occurs
> > # - the y coordinate at which message occurs
> > #
> > BOOL
> > PeekMessage(handle, min=0, max=0, message=&PL_sv_undef)
> > HWND handle
> > UINT min
> > UINT max
> > SV* message
> > PREINIT:
> > MSG msg;
> > CODE:
> > ZeroMemory(&msg, sizeof(msg));
> > RETVAL = PeekMessage(&msg, handle, min, max, PM_NOREMOVE);
> > if(message != &PL_sv_undef && SvROK(message)) {
> > if(SvTYPE(SvRV(message)) == SVt_PVAV) {
> > av_clear((AV*) SvRV(message));
> > av_push((AV*) SvRV(message), newSViv((long) msg.hwnd));
> > av_push((AV*) SvRV(message), newSViv(msg.message));
> > av_push((AV*) SvRV(message), newSViv(msg.wParam));
> > av_push((AV*) SvRV(message), newSViv(msg.lParam));
> > av_push((AV*) SvRV(message), newSViv(msg.time));
> > av_push((AV*) SvRV(message), newSViv(msg.pt.x));
> > av_push((AV*) SvRV(message), newSViv(msg.pt.y));
> > }
> > }
> > else {
> > if(PL_dowarn) warn("Win32::GUI: fourth parameter to PeekMessage
is
> > not an array reference");
> > }
> > OUTPUT:
> > RETVAL
>
>
>
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