[Lazarus] Get JPEG from TAChart in CGI app

[Leonardo M. Ramé]

On 2011-03-21 05:27:49 +1000, Alexander Klenin wrote:
> On Mon, Mar 21, 2011 at 05:14, Leonardo M. Ramé <l.rame at griensu.com> wrote:
> > On 2011-03-21 04:54:45 +1000, Alexander Klenin wrote:
> >> On Mon, Mar 21, 2011 at 04:44, Leonardo M. Ramé <l.rame at griensu.com> wrote:
> >> >> Of course, since you are converting an object to the type it does not belong to.
> >> >> You should create a TBitmap or another similar object.
> >> >> Did you look at the savedemo as I proposed in a previous mail?
> >> >
> >> > Yes, if I try to PaintOnCanvas of a TBitmap, for example. I get "Canvas
> >> > does not allow drawing".
> >>
> >> That is very strange. I have created a nogui demo in r29942,
> >> which does not have any gui, and creates a bitmap file with the chart.
> >> Does it work for you?
> >>
> >
> > It works when compiled with Gtk2 widgetset. If you set the nogui
> > widgetset you'll get the "Canvas does not allow drawing error".
> 
> That is true.
> You have to link you CGI app with some graphic widgetset,
> which will unfortunately bloat an executable, but should otherwise work.
> 

Well, I tested that, but I get "Internal Server Error" from my Apache.

-- 
Leonardo M. Ramé
http://leonardorame.blogspot.com