Re: repainting GtkTextView

[Olexiy Avramchenko <ath beast stu cn ua>]

Harring Figueiredo wrote:

> Thanks for the reply --
>
> The code is already on a timeout_add call. Here is what I am doing.
>
>  /* prototype */
>  timeout_callback (...)  /* called every 10 sec or set by user */
>  {
>     while(open(file) == NULL)
>     {
>         /* can not open file on stupid windows 2K  --locked by pther process*/
>        
>         log_to_text_view_widget( " File is locked ..."); <== This does not
> happen.
>         sleep(1)  ;   /* wait to see if other proc closes the file */
>
>         if( loop > 10 ) break; /* give up for now and come back later on
> timeout. */        
>     }
>
>     /* when we reach here, the 10 messages from log_to_text_view_widget() shows altogether. */
>
>  }
>
>  
As I understand, the ugly code below will do what you want without blocking,
so all messages will appear at the screen:

---
static int callback_tries=0;
static guint timeout_id=0;

static void lpntcfn_timeout_callback(...)
{
   if (open(file) == NULL) { /* heh, where's good old -1 instead of 
NULL ?;) */
       log_to_text_view_widget("File is locked ...");
      /* no blocking sleep here, timeout will be called after ~1 sec by 
gtk  */
   }
   else {
      /* we're happy - file isn't locked, making our job */
   }
   if (++callback_tries >= 10) {
       timeout_id = 0;
       return FALSE;    /* we tried 10 times, just killing this callback */
   }

   return TRUE;
}

void somewhere_in_win32_code(...)
{
   if (timeout_id)
       gtk_timeout_remove(timeout_id);

   callback_tries = 0;

   timeout_id = gtk_timeout_add(1000, 
(GtkFunction)lpntcfn_timeout_callback, ...);
}
---

PS: "lpntcfn" hungarian notation here means: Long Pointer to my Nice 
Timeout Callback FuNction.

Olexiy