Well I've reduced the flicker a little by doing a few small things (mostly not reloading images unless they have changed). I also set the "DoubleBuffered" property of the components to true, though I see no effect from doing so nor do I know what effect it's supposed to have. My understanding of doublebuffering (as I learned it doing things like SDL) is that it means that any changes to the component/canvas is drawn in memory NOT on screen, and only when they are all done do you update the component with one single action (drawing the memory buffer to the screen buffer - known commonly as a 'flip') - my TDoubleBuffer component is based on doing exactly that. What it means when you set the doublebuffered property of a button to true I don't know - though I would love to find out.
A.J. On 5/29/07, Dave Coventry <[EMAIL PROTECTED]> wrote:
AJ, In my case, when the image is redrawn, the TImage was cleared which showed the underlying colour (clBtnFace), which caused the flicker when the black background was painted in. I'm not sure of how relevant it would be in your case, but I changed the colour of the underlying panel to black, which eliminated the flicker. It would depend, I guess, on the colour of your graphic and the colour of the background displayed when it clears. (I'm not really auf fe with the TBitBtn components, having never used them). A.J. Venter wrote: > On 5/29/07, Felipe Monteiro de Carvalho > <[EMAIL PROTECTED]> wrote: >> On 5/29/07, A.J. Venter <[EMAIL PROTECTED]> wrote: >> > I have a couple of TBitBtn components. Appart from their captions and >> > glyphs, I actually write some information to the canvasses which are >> > meant to show up ON TOP of each glyph. >> >> I would write my own fully custom-drawn button to do this. > I was afraid you'd say that :) > Now imagine my deadline is a few hours only and I have other > outstanding functionality to code... > > A.J. > > _________________________________________________________________ > To unsubscribe: mail [EMAIL PROTECTED] with > "unsubscribe" as the Subject > archives at http://www.lazarus.freepascal.org/mailarchives > > -- Dave Coventry Tel (home): +27(0)31 3092301 Tel (office): +27(0)31 2058448 Cell: +27(0)82 9000179 _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
-- A.J. Venter CEO - OutKast Solutions C.C. http://www.outkastsolutions.co.za Cell: +27 83 455 9978 Fax: +27 21 413 2800 Office: +27 21 591 6766 _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
