[Glade-users] how to have a iteration untill a button is released?

[Damon Chaplin]

On Sun, 2007-01-21 at 23:32 +0100, Koen Lekkerkerker wrote:
> Hi everybody, i still didnt find out how to fix the problem which i
> mailed about a while ago. It is desribed beneath. I really tried hard
> and an awfull lot, but nothing worked. Though i am sure its possible.
> Could someone please help me with it because its very important for a
> important school project...
> This is what i wrote last time:
> 
> "I want this after button is pressed: 1. first i want some code to be
> executed, 2. then i want to periodically increment a value x untill the
> button is released 3. and after that i would like to execute some other
> code. 
> I guess only the iteration part is the problem. For this i thought about
> an iteration with a usleep(T) to make it being incremted every T and to
> make it stop when a boolean which checks if the button is clicked (or
> actually in my case: pressed) returns FALSE. But i couldnt find a
> boolean for this. I did found something about
> gtk_get_current_event_state () and gtk_get_current_event() though i
> didnt get them to work (maybe i just do not understand them well)... So
> does anybody know how to keep an iteration going untill a button is
> released?"

In the button-press signal handler call g_timeout_add() to add a
function to be called at regular intervals. (Make sure you store the
returned timeout id as you'll need it to remove the timeout function.)

In the button-release handler call g_source_remove() to remove your
timeout, using its id. (You should also remove it if your window is
closed or destroyed.)

Damon