Re: Fw: GtkTextBuffer, insert_text

[Mohammed Sameer <uniball gmx net>]

i don't care about the property or modifying it
the inserted text should be passed to the signal handler

    void text_insert_cb(GtkTextBuffer *buffer,
                        GtkTextIter pos,
                        const gchar *text,
                        gint length,
                        gpointer user_data)
             {
             fprintf(stderr,"%s", text);
             }
text should be the inserted text
i tried 
insert = g_signal_connect (GTK_TEXT_BUFFER (buffer), "insert_text",
                                     GTK_SIGNAL_FUNC (text_insert_cb), NULL);
i don't get the worning but still printing garbage ?

i don't know if i understand you or not ??

On Fri, 2002-07-19 at 06:32, Rich Gautier wrote:
     Well, once you have it in your function, you need to recast it to get the
     property out of the widget.
    
     You're only passing in a memory address, after all, and by casting it into
    a
     basic widget/object, you're not going to have the extended properties
     available....  I don't know what the property of buffer is for it to get at
    the
     actual text?  perhaps buffer->text?
    
     The cast you want is something like G_TEXT_BUFFER(buffer), perhaps?  You'll
    have to consult someone who is more  familiar with GTK on that,  all I can
    offer is my suggestion - question is -  did you still get the runtime
    invalid cast error?
    
    > ----- Original Message -----
    > From: "Mohammed Sameer" <uniball gmx net>
    > To: <gtk-app-devel-list gnome org>
    > Sent: Thursday, July 18, 2002 10:54 PM
    > Subject: Re: GtkTextBuffer, insert_text
    >
    >
    > Thanks for the reply
    > still didn't work?
    > i wonder what's the problem!!!!
    >
    > On Fri, 2002-07-19 at 04:21, Rich Gautier wrote:
    >     ï
    >     I think your callback function needs to have GtkWidget *widget as
    >     the first passed parameter.
    >
    >     such as:
    >
    >     void text_insert_cb(GtkWidget *buffer, ..., gpointer user_data)
    >
    >     because the callback function is going to cast it as a basic widget
    >     when it makes the call.  You may be able to recast it once it's in
    >     your callback function, but it's not passed as GtkTextBuffer type..
    >
    >     Rich G
    >         ----- Original Message -----
    >         From: Mohammed Sameer
    >         To: gtk-app-devel-list gnome org
    >         Sent: Thursday, July 18, 2002 7:28 PM
    >         Subject: GtkTextBuffer, insert_text
    >
    >         Hi all
    >         i have a small problem
    >
    >         i have a textbuffer
    >
    >           contents = gtk_text_view_new ();
    >           buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (contents));
    >                 /* Implementing undo/redo... */
    >         insert = g_signal_connect (GTK_OBJECT (buffer), "insert_text",
    >                                 GTK_SIGNAL_FUNC (text_insert_cb), NULL);
    >
    >         and the callback
    >         void text_insert_cb(GtkTextBuffer *buffer,
    >                                                     GtkTextIter pos,
    >                                                     const gchar *text,
    >                                                     gint length,
    >                                                     gpointer user_data)
    >         {
    >         fprintf(stderr,"%s", text);
    >         }
    >
    >         but it prints some garbage
    >         and when i run the program i get:
    >         GLib-GObject-WARNING **: invalid cast from `GtkTextBuffer' to
    >         `GtkObject'
    >
    >         what's the problem here ?
    >         can anyone point me ??
    >
    >         Thanks a million
    >
    >         --
    >         ----------------
    >         -- Uniball @ DALnet
    >         Linux registered user # 224950
    >         ICQ # 58475622
    >         With Great Power, Comes Great Responsibilities.
    > --
    > ----------------
    > -- Uniball @ DALnet
    > Linux registered user # 224950
    > ICQ # 58475622
    > With Great Power, Comes Great Responsibilities.
    >
    > _______________________________________________
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    > gtk-app-devel-list gnome org
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-- 
----------------
-- Uniball @ DALnet
Linux registered user # 224950
ICQ # 58475622
With Great Power, Comes Great Responsibilities.