[Glade-users] Where is the input callback method in glade?

[Peter.Rottengatter at bakerhughes.com (Rottengatter, Peter)]

The infinite loop is easily avoided by setting a flag while modifying the text withing the handler, and 
testing the flag at the beginning of the handler (not exactly a beautiful solution, but I'm sure it works). 
This way your intented functionality can be implemented with GtkEntry.

I have no experience with GtkTextView though. It's not a GtkEditable, hence the details of how to implement 
this will be different.

Regards

Peter Rottengatter

-----Original Message-----
From: Ferdinand Ramirez [mailto:ramirez.ferdinand at yahoo.com] 
Sent: 06 October 2011 08:18
To: Rottengatter, Peter; glade-users at lists.ximian.com
Subject: RE: [Glade-users] Where is the input callback method in glade?

Thanks. I tried something similar with GtkTextBuffer and it worked, but I cannot modify the text, only block 
it or let it through. If I modify it, and insert the modified text into the buffer from within the callback, 
I end up in an infinite loop.

Is there another way you know, using GtkTextView perhaps?

Thanks,
-Ferdinand

--- On Wed, 10/5/11, Rottengatter, Peter <Peter.Rottengatter at bakerhughes.com> wrote:

> From: Rottengatter, Peter <Peter.Rottengatter at bakerhughes.com>
> Subject: RE: [Glade-users] Where is the input callback method in glade?
> To: "Ferdinand Ramirez" <ramirez.ferdinand at yahoo.com>, "glade-users at lists.ximian.com" <glade-users at 
> lists.ximian.com>
> Date: Wednesday, October 5, 2011, 12:46 AM
>
> Read
> http://developer.gnome.org/gtk/stable/GtkEditable.html#GtkEditable-insert-text
>
>
> I use the following code to restrict input to numerical
> characters (so that the user can only enter positive integer
> numbers):
>
> ...
> GtkEntry? *entry = gtk_entry_new();
> gtk_signal_connect (G_OBJECT (entry), "insert-text",
> G_CALLBACK (entry_insert), NULL);
> ...
>
> void entry_insert (GtkEditable *entry, char *new, gint len,
> gpointer position, gpointer data)
> {
> ? gboolean? faulty = FALSE;
> ? for (int i = 0; i < len; i++)
> ? {
> ? ? if (! isdigit (new[i]))
> ? ? ? faulty = TRUE;
> ? }
> ? if (faulty)
> ? {
> ? ? g_signal_stop_emission_by_name ((gpointer)
> entry, "insert-text");
> ? }
> }
>
>
> Regards
>
> Peter Rottengatter
>
> -----Original Message-----
> From: glade-users-bounces at lists.ximian.com
> [mailto:glade-users-bounces at lists.ximian.com]
> On Behalf Of Ferdinand Ramirez
> Sent: 04 October 2011 13:55
> To: glade-users at lists.ximian.com
> Subject: [Glade-users] Where is the input callback method
> in glade?
>
> Where is the callback to keyboard input in glade. I want
> this so that I can respond to each letter that is input.
>
> As as example, I was looking at the tutorial at 
> http://www.micahcarrick.com/files/gtk-glade-tutorial/C/main.c
> and was wondering how the callback method for keyboard
> inputs can be enabled and how I could modify it.
>
> For simplicity, let us say that I want to be able to print
> out the characters on the terminal as I input them in the
> above program. I then want to update the buffer instead of
> letting some hidden function in glade do it for me. How do I
> achieve this?
>
> I'm just using the above example since it is simple and
> neatly written.
>
> Thanks,
> -Ferdinand
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