Displaying 2 results from an estimated 2 matches for "x11_eventhelp".
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x11_eventhelper
2016 Sep 21
1
Handlers in setGraphicsEventHandlers() can recursively call getGraphicsEvent(). Intended behavior?
...bd() gets called in CHelpKeyIn() and NHelpKeyIn() in
library/grDevices/src/devWindows.c, where the call is encapsulated in an
'if (dd->gettingEvent)' block. So the only times this code ever calls
doKeybd() is when gettingEvent is in fact set.
Further, it's called in two locations in X11_eventHelper(), in
modules/X11/devX11.c, where the state of gettingEvent seems to be moot
for its handling.
doMouseEvent() in turn is called in HelpMouseClick(), HelpMouseMove(),
and HelpMouseUp() in devWindows.c, where again each call is only made
after checking if gettingEvent is true.
In devX11.c it'...
2016 Sep 17
2
Handlers in setGraphicsEventHandlers() can recursively call getGraphicsEvent(). Intended behavior?
Hey all.
As in general it's a bad idea to allow an event handler to generate an
event, and as comments in the code seem to suggest this isn't the
intention either, I was wondering about recursion in getGraphicsEvent().
In main/gevents.c, both doMouseEvent() and doKeybd() have the following
line;
dd->gettingEvent = FALSE; /* avoid recursive calls */
And they reset it to TRUE