On 21/12/11 16:11, Martin Schreiber wrote:
On 12/21/2011 04:53 PM, Henry Vermaak wrote:
On 21/12/11 14:53, Felipe Monteiro de Carvalho wrote:
wow, I started taking a look at how to do it and as always with
anything related to X11 it is terribly complicated ... but luckly I am
not alone here using FPC, so I shamelessly stole code from fpgui,
hammered it a little bit to fit TTimer and TCDTimer and already have a
initial TTimer for X11. If anyone wants to know how I did:
http://svn.freepascal.org/cgi-bin/viewvc.cgi?view=rev&root=lazarus&revision=34350
Spinning like this is bad news for efficiency and battery life of
embedded devices.
MSEgui has another method with a list of timer events.
http://gitorious.org/mseide-msegui/mseide-msegui/blobs/master/lib/common/kernel/msetimer.pas
On Linux it uses timer signals to build the time steps with microseconds
resolution.
If I was just interested in linux, I'd probably use timerfd, which would
tie in nicely with the select(). For non-linux, using posix timers and
self-pipe trick with pselect() would also work, but would be more work.
Henry
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