You can have multiple timeout callbacks. To remove an timeout +callback use Fl::remove_timeout(). + +
If you need more accurate, repeated timeouts, use Fl::repeat_timeout() to +reschedule the subsequent timeouts.
+ +The following code will print "TICK" each second on +stdout with a fair degree of accuracy:
+ +
+ void callback(void*) {
+ puts("TICK");
+ Fl::repeat_timeout(1.0, callback);
+ }
+
+ int main() {
+ Fl::add_timeout(1.0, callback);
+ return Fl::run();
+ }
+
+
Consume a single switch from argv, starting at word i. @@ -988,31 +1011,24 @@ callback that no longer exists.
Inside a timeout callback you can call this to add another timeout. -Rather than the time being measured from "now", it is measured from -when the system call elapsed that caused this timeout to be called. This -will result in far more accurate spacing of the timeout callbacks, it -also has slightly less system call overhead. (It will also use all -your machine time if your timeout code and FLTK's overhead take more -than t seconds, as the real timeout will be reduced to zero). +
This method repeats a timeout callback from the expiration of the +previous timeout, allowing for more accurate timing. You may only call +this method inside a timeout callback. -
It is undefined what this does if called from outside a timeout -callback. +
The following code will print "TICK" each second on +stdout with a fair degree of accuracy:
-This code will print "TICK" each second on stdout, with a -fair degree of accuracy: +
+ void callback(void*) {
+ puts("TICK");
+ Fl::repeat_timeout(1.0, callback);
+ }
-
-void callback(void*) {
- printf("TICK\n");
- Fl::repeat_timeout(1.0,callback);
-}
-
-main() {
- Fl::add_timeout(1.0,callback);
- return Fl::run();
-}
-
+ int main() {
+ Fl::add_timeout(1.0, callback);
+ return Fl::run();
+ }
+