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 Post subject: Gtk CheckButton Activation
PostPosted: Sun Aug 25, 2013 3:16 pm 
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Joined: Sat Aug 24, 2013 9:51 pm
Posts: 1
Is there a way to change the status of a gtk checkbutton without emitting a signal that will activate the checkbutton's signal handler? I'm writing an application that has a number of checkbuttons that change in different patterns according to which checkbutton a user selects ( to show how the program settings change in response to some user choice ). I've tried "gtk_toggle_button_set_active" and g_signal_emit_by_name but these functions emit a signal that calls the checkbutton's signal handler. I've tried to access the widget's data directly like this:

Code:
GTK_TOGGLE_BUTTON ( cutCheckBox ) -> active = true;


but g++ gives me errors like this:

Code:
error: ‘GtkToggleButton’ has no member named ‘active’


The only thing I haven't tried is "g_signal_handler_block" , which requires calling a bunch of api's everytime I want to set a checkbutton from within my code ( this seems inefficient ). Are there other ways of accomplishing this? Thanks for any information...


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 Post subject: Re: Gtk CheckButton Activation
PostPosted: Wed Aug 28, 2013 8:58 am 
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Never Seen the Sunlight

Joined: Mon Apr 28, 2008 5:52 am
Posts: 799
Location: UK
Hello and welcome,

Any state change of a widget will involve emission of signals. This is all part of how GTK+ works and helps with getting redraws done, internal state changes etc.

There is now no direct access to any member variables of a widget and accessor functions must now be used.

If you want to block the signals to your application then you will have to use the g_signal_handler_block() / g_signal_handler_unblock() functions to do this.

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