Re: Discarding key pressed events.

[Luca Cappa <luca cappa i-medlab com>]

Luca Cappa wrote:

> Hello,
>
> in my application I have some key handlers which receive input from 
> the user. When the user press a key,
> a task has to be executed: this task could require a tiny time slice 
> or a longer one. The problem is that if the user
> hold pressed a key and the relative task takes a lot of time to be 
> executed, my application will be flooded of key pressed events.
> I would like to avoid the situation where I receive a lot of "key 
> press" events, which force my application to execute a long
> time consuming task each time the event is received, and then the 
> application is stuck until all the events are "eaten".
>
> How to avoid this? maybe i could delete the keys' event from the 
> events queue? Any help?
Actually I did a workaround for this problem:

1- get an key press event;
2- disable key press event with: set_events (get_events() ^ 
Gdk::KEY_PRESS_MASK);
3- start a timer which every 10 millisecs do a task;
4- receive a key release event;
5- stop the timer
6- reenable the key press event mask: set_events (get_events() | 
Gdk::KEY_PRESS_MASK);

The problem actually is that I cant call "set_events" on a widget which 
is already realized, and I am get a lot of warnings indeed.
So, my problem is still unresolved. Anyone could help me?

Thanks in advance,
Luca


p.s. I am using gtkmm, but there is no problem in talking to my about gtk+.