[Lazarus] Fast drawing to canvas

[Felipe Monteiro de Carvalho]

On Wed, Feb 8, 2012 at 10:37 AM, Graeme Geldenhuys
<graemeg.lists at gmail.com> wrote:
> You didn't touch on my other point. Is double buffering enabled by
> default for all painting routines in the LCL? Or must the end-user /
> developers specifically enable it somewhere?

He is using TImage, which is not built for fast changing graphics, it
is built for displaying a static image or images which change
sometimes only, so he is already using the wrong architecture.

But the answer would be: depends. There is a DoubleBuffer property
which affects only Windows. I think that all other widgetsets always
do Double-buffering without an option to disable it. But TImage
probably already defines DoubleBuffer. His flickering could be due to
partial updates or background erasing. But summing up, his problem is
using the wrong component for the job, not the DoubleBuffer propery.

-- 
Felipe Monteiro de Carvalho