On 2011-03-20 18:16:00 -0300, Leonardo M. Ramé wrote: > On 2011-03-20 20:16:19 +0000, Henry Vermaak wrote: > > On 20 March 2011 19:42, Leonardo M. Ramé <[email protected]> wrote: > > > On 2011-03-21 05:39:01 +1000, Alexander Klenin wrote: > > >> On Mon, Mar 21, 2011 at 05:30, Leonardo M. Ramé <[email protected]> > > >> wrote: > > >> >> 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. > > >> > > >> What does the log show? > > >> > > > > > > [Sun Mar 20 16:30:09 2011] [error] [client ::1] (cgicharts:16246): > > > Gtk-WARNING **: cannot open display: > > > > Try using xvfb. This uses a virtual framebuffer that doesn't need a > > display. I've had to use it with a webserver before. > > > > Henry > > > > Thanks Henry, it seems to almost work, at least I don't get the Cannot > Open Display error, but... > > When I do this: > > lChart.Width := 100; > lChart.Height := 100; > with lChart.SaveToImage(TJPEGImage) do > begin > SaveToStream(AResponse.ContentStream); > AResponse.ContentType := 'image/jpeg'; > AResponse.ContentLength := AResponse.ContentStream.Size; > AResponse.SendContent; > end; > > I get a black square of 100 x 100 pixels. > > If I try this: > > lChart.SaveToBitmapFile('test.bmp'); > > I get the error "Image palette is too big or absent" from my CGI. >
Sorry Henry, the correct command to run Xvfb is this: Xvfb :12 -screen 0 1024x768x16 & Now it works! -- Leonardo M. Ramé http://leonardorame.blogspot.com -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
