Steema Central

Hi,

I have created my own series based on TPoint3DSeries to show some sort of transparent bubbles with different sizes and positions in OpenGL mode.
Everything worked fine with previous versions of TChart (for example V8.06).
After the upgrade to version 9 (2010) I see some buggy behaviour. Whenever I try to copy the Chart to the clipboard, for example using procedure CopyToClipboardBitmap or click copy to clipboard on TeeComander, or when I try to print the chart using TeeComander, the transparency is gone
and the bubbles get opaque (You need to repaint the chart once after the action to see the result).
Please see attached example project. I still can make a screen shot but this is a rather ugly solution

best regards,

X-ray

Hi X-ray,

I think the problem could be with the antialias. Could you please try deactivating it?

Hi Yeray,

yes setting the Antialias property of TTeeOpenGL to False solved the problem or is at least a work around.
Still I don't understand why a CopyToClipboard (or Print out) action changes the layout/display
of the graphics?

Thanks and best regards,

X-ray

Hi x-ray,

Ok, thanks for confirming it. I've added it to the defect list to be fixed in future releases (TV52014972). It seems to be the combination of OpenGL+Antialias+Transparency when exporting.