>I'm using CPP Builder 4 Standard under Win98 SE, 128 meg RAM, my swap
>file is the only file on a 2 gig partition.
 ... snip ...

>>I'm using CPP Builder 4 Standard under Win98 SE, 128 meg RAM, my swap
>>file is the only file on a 2 gig partition.
> ... snip ...

>Hi
>Timage type bitmaps are limited to approx 16MB.
... smip ...
>w3.x - or be more specific and I will try and help

>andy

> At 600Mb that's a mighty big bitmap!

> If it's not, see if it's possible to allocate the memory yourself
first, and
> then CreateDIBSection but letting it simply use your own memory,
instead of
> allocating the memory itself as it normally does. (I'm fairly sure
that's
> possible).

> If that works okay, and if no one else offers you more helpful
advice, I'd
> be inclined to read through the source to graphics.pas to see
exactly how
> and when TBitmap creates its bitmap, and if you can make the change
above.

> In any case, I'd be wary of trusting Windows to manage a bitmap that
big.
> Commercial drawing programs like CorelDraw and Paintshop appear to
store the
> raw bits for the bitmap in their own format, so they can have better
control
> over when and how various pieces of it get paged to disk.

> --
> Lucian

> "Lucian Wischik" <ljw1...@cam.ac.uk> wrote in message
> news:913ko6$96i7@bornews.inprise.com...
> > >    bigbmp -> Width = 12000;
> > >    bigbmp -> Height = 12000;
> > > .... it compiles and runs, assigns the width OK but throws
EOutOf
> > > Resources when it tries to assign the height.

> > At 600Mb that's a mighty big bitmap!

> 600 MB?  You were thinking of a color bitmap?  This is just
> monochrome.

> 12000 ^2 pixels  /  (1 bit per pixel  * 8 bits per byte * 1024^2
bytes
> per meg ) = 17 MB approx.

> And I just used my code to create a 13,750 X 9700 pixel monochrome
> bitmap and save it to disk.  Windows reports 16.2 MB for the file
size
> which is almost exactly what I get using my method of calculating.

> Maybe I'm counting pixels and bytes incorrectly so I need to clear
> that up first.  Then tell me if I should investigate
CreateDIBSection
> or whatever.

> > My suspicion is that the call to
> > CreateDIBSection or CreateBitmap or whatever it uses is failing.
> Testing
> > this should be your first port of call. See if it's possible to
> > CreateDIBSection something that big.

> I need to create large bitmaps.  The code below compiles and runs, no
> problem.

>    Graphics::TBitmap *bigbmp;
>    bigbmp = new Graphics::TBitmap;
>    bigbmp->Monochrome = true;
>    bigbmp -> Width = 11000;
>    bigbmp -> Height = 11000;
>    < code to draw and print the image >
>     delete bigbmp;

> However, if I try to set the height and width to larger values, for
> example....,

>    bigbmp -> Width = 12000;
>    bigbmp -> Height = 12000;

> .... it compiles and runs, assigns the width OK but throws EOutOf
> Resources when it tries to assign the height.

> Builder's Help says EOutOf Resources indicates Windows has run out of
> handles.  I use only one other handle (for the printer) and since it
> runs fine for an 11000 X 11000 pixel bitmap, I think the problem is
> that it's running out of heap memory.  Since my swap file is the only
> file on a 2 gig partition and since I let Windows manage the swap
> file, I don't think it's a swap file limitation.

> I've read the Help on the new operator and related topics and it
> appears that it is possible to allocate specific amounts of memory
> from the heap to bitmaps via new.  But I can't get the syntax right.
> Could someone please help me with the syntax ?    Thanks.

> Kim

> ----------=<>{ Spam Shield ON }<>=-----------
> Email to "thejunk...@telusplanet.net" gets
> autotrashed....I never see it. Try **bergk-
> at-telus**planet dot nut if you must email
> ------------------------------------------------

> I have encountered this probelm, and found it's very unpredictable,
to
> boot.

> Kim Bergman wrote:

> > I'm using CPP Builder 4 Standard under Win98 SE, 128 meg RAM, my
swap
> > file is the only file on a 2 gig partition.

> > I need to create large bitmaps.  The code below compiles and runs,
no
> > problem.

> >    Graphics::TBitmap *bigbmp;
> >    bigbmp = new Graphics::TBitmap;
> >    bigbmp->Monochrome = true;
> >    bigbmp -> Width = 11000;
> >    bigbmp -> Height = 11000;
> >    < code to draw and print the image >
> >     delete bigbmp;

> > However, if I try to set the height and width to larger values,
for
> > example....,

> >    bigbmp -> Width = 12000;
> >    bigbmp -> Height = 12000;

> > .... it compiles and runs, assigns the width OK but throws EOutOf
> > Resources when it tries to assign the height.

> > Builder's Help says EOutOf Resources indicates Windows has run out
of
> > handles.  I use only one other handle (for the printer) and since
it
> > runs fine for an 11000 X 11000 pixel bitmap, I think the problem
is
> > that it's running out of heap memory.  Since my swap file is the
only
> > file on a 2 gig partition and since I let Windows manage the swap
> > file, I don't think it's a swap file limitation.

> > I've read the Help on the new operator and related topics and it
> > appears that it is possible to allocate specific amounts of memory
> > from the heap to bitmaps via new.  But I can't get the syntax
right.
> > Could someone please help me with the syntax ?    Thanks.

> > Kim

> > ----------=<>{ Spam Shield ON }<>=-----------
> > Email to "thejunk...@telusplanet.net" gets
> > autotrashed....I never see it. Try **bergk-
> > at-telus**planet dot nut if you must email
> > ------------------------------------------------