Re: problem in gtktextview

["Andrew E. Makeev" <andrew solvo ru>]

Manoj tr wrote:

> hai 
>   I have a problem with textview. I want to replace the characters in a gtktextview after checking some condition. ie when i press "A" the displayed character will be H. But in the case of textview i enter the all code to rplace the character,  but it will print both characters  "AH" ie the actual one and the mapped one. I place the code bellow. any replay will very thankful to you. I want to build an editor in regional language. I think some problem in iteration. It will not correctly initialize.
>
> With Regards
> Manoj
>
> #########################################
>
> #include <gtk/gtk.h>
>  
[skip]

> gboolean
> on_textview1_key_press_event           (GtkWidget       *widget,
>                                        GdkEventKey     *event,
>                                        gpointer         user_data)
> {
>
> int Pos,SelPos;
>    gchar *fchar;
>    Buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW( widget)) ;
>    MarkCur = gtk_text_buffer_get_insert(Buf);
>    gtk_text_buffer_get_iter_at_mark ( Buf, &IterCur,MarkCur ) ;
> gtk_text_buffer_get_iter_at_offset(Buf,&IterEnd,-1);
>        switch (event->keyval) {
>                case 65: // 'A'
First of all you have to connect key_press_event handler with option 
before = TRUE, ie your function must be called before any inner GTK 
handlers.
Then you have 2 options here:
1. do text insertion into textview yourself, then return TRUE to stop 
event processing.
2. just replace event->keyval and return FALSE to let GTK do it's job.

>                gtk_text_buffer_insert( Buf,&IterCur,"H",-1);
>  //              gtk_text_buffer_insert( Buf,&IterCur,"m",-1);
> gtk_text_buffer_get_iter_at_offset(Buf,&IterEnd,gtk_text_iter_get_offset(&IterCur)-1);
> //gtk_text_buffer_delete(Buf,&IterCur,&IterEnd);
>                break;
>        }
>    return FALSE;
> }
>
>