GtkTextView / GtkTextBuffer and g_signal_connect

[Joe <joeja mindspring com>]

Hello,
   I am not on this list and I have a few questions.  I am attempting 
to develop a simple editor using the GtkTextView / GtkTextBuffer.

   1) I am not sure this is a bug but here goes. I have created a 
composit textwidget called GXTEXT.  The buffer is a text buffer and the 
textarea is the textview.  I add the two signals below:    

   g_signal_connect(GXTEXT(maintext)->buffer, "changed",
                       (GtkSignalFunc)lineposition, label);

   // this signal fails to pass the label but the previous one does ?
   g_signal_connect(GXTEXT(maintext)->textarea, "move_cursor",
                       (GtkSignalFunc)textlineposition, label);

   The function prototypes are below:

       static void lineposition (GtkTextBuffer *, GtkWidget *);
       static void textlineposition (GtkWidget *, GtkWidget *);

   textlineposition does not get the label passed to it.  I am not sure 
why. lineposition DOES get the label.  
  
   Any ideas on what I may be doing wrong?  Do I need to pass more 
arguments to textlineposition?  


   2) Do I need to do something special to get scrolling to work?  I 
get scroll bars in the scrolled window, but when I am typing and I hit 
carriage return or get out of the viewport I have to manually move the 
window.  Is this a bug?

   3) How do I select all the text in the textbuffer?  I know how to 
get the textbounds, but how would I implement a 'select all' menu type 
item?  Is there a special tag I should use or something?

   4) Is there an easy way to do syntax highlightening?

Thanks,
Joe