Newsgroups: comp.os.msdos.djgpp
From: manfred DOT heumann AT uni-bielefeld DOT de (Manni Heumann)
Subject: Re: Allegro,BITMAP *buffer;
References: <37E1B735 DOT C564EEB AT gtcom DOT net> <05a4d7f6 DOT 74e084f3 AT usw-ex0102-016 DOT remarq DOT com> <37E294DB DOT 87A9535D AT gtcom DOT net>
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Date: Fri, 17 Sep 1999 20:32:50 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

In article <37E294DB DOT 87A9535D AT gtcom DOT net>, krogg DOT no DOT to DOT spam AT gtcom DOT net wrote:

>Varence wrote:
>> 
>>     Also, try declaring BITMAP *buffer at the head of the
>> function, and buffer = create_bitmap(1024,768) after.  If
>> you have other instructions prior to this, rather than just
>> declarations, your compiler might be spewing.
>> 
>If i understand you correctly
>then you are saying do this:
>
>BITMAP *buffer;
>int main(void)
>{
> buffer=create_bitmap(1024,768);
>}
>
>instead of doing this:
>
>int main(void)
>{
>BITMAP *buffer=create_bitmap(1024,768); 
>}
>
>OK,I tried it and it worked great.I dont understand why
>but I will think about it a while and see if i can.Thanks,
>my program looks nice in double buffering.
>
>

No, he meant:
int main (void)
{
    BITMAP *buffer;
    do_some_other_stuff();
}

instead of:
int main (void)
{
    do_some_stuff();
    BITMAP *buffer;
}

This is one of the differences between C and C++. In C you cannot create 
variables anywhere you want to, C++ has serious reasons to allow this.


--

Manni