difference between signal and event

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sukhdeepmankoo

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Hi,
Can any body tell me, what is the difference between signal and event and which situation can we use signal and event.
Thanks.
 

An event is often a collection of signals and certain conditions.



for eg.
A button emits a "clicked" event when the mouse button is clicked

The Mouse-down event fires the Mouse-down signal. The difference
here would be the user causes events, which emit signals, which are
handled by the application. But the application can fire signals
itself, without user input.
 

In what context are you talking?
--
Amr Ali
 

A signal is mainly a callback mechanism. It's a way
for one object to register it's interest in being notified of another
objects action or state change. You register your interest by providing
a callback, when the object "emits a signal" it simply iterates over the
list of callbacks which have been registered with it and calls the
callback passing some predefined data with it.

An event is an almost one-to-one mapping of window system events. Window
system events are things like "key press" or "window move". Window
system events are reported to the applications main loop. GDK/GTK
interprets the window system events passes them along to you.
 

Friends ....
I think this thread will really enlighten our thought process in this particular topic ....
**broken link removed**

And "sukhdeepmankoo" thanks to you for asking such a question which is really somewhat different from our as usual theoretical questions .

Regards,
SD
 

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