Re: Problem forcing display of text

["Mickey Houck" <mickster00 hotmail com>]

Thank you for your reply.

The text is not updated frequently.  About 20 short lines are output as the I/O task is initialized, 3 or 4 more lines once a survey has been completed, then nothing until the time consuming I/O work is done.  The main thread should have lots of idle time, the I/O thread is very busy.

I'm looking for a way to flush from the main thread.

Mickey.

>From: "Gustavo J. A. M. "Carneiro

>To: Mickey Houck

>CC: gtk-app-devel-list gnome org

>Subject: Re: Problem forcing display of text

>Date: 24 Jan 2003 17:16:15 +0000

>

> I think that what may be happening is that you are inserting text too

>frequently. GtkTextView updates itself in an idle function. If the gtk

>main loop has no idle time, the text view updates will never happen.

>

> I suggest you update less frequently. Instead of inserting many small

>chunks of text, append to a text buffer (GString). Every once in a while

>(half a second, perhaps), flush the buffer into the text widget.

>

>On Fri, 2003-01-24 at 13:23, Mickey Houck wrote:

> > I'm writing an application collects inputs, then reads a lot of data.

> > As the data is being read, I have a dialog that contains a progress

> > bar (showing percent complete), and a text widget to display runtime

> > messages.

> >

> > I'm using pthreads. The code that reads all the data is started as a

> > separate thread. This thread (the I/O thread) is doing the

> > gtk_text_buffer_insert calls to show the runtime messages. The

> > progress bar is being updated with a timeout function back in the main

> > thread based on data updated in the I/O thread.

> >

> > No problem with the progress bar and I'm confident that the thread

> > code is implemented correctly.

> >

> > I can't seem to force the data in the text buffer to be displayed in

> > the text widget as it is inserted. It's there, I just can't see it

> > right away.

> >

> > Moving the mouse in and out of the window displays some text, but it

> > takes a click in the text widget to get everything displayed once the

> > I/O thread is done. I don't want to force the user to do any silly

> > stuff like that.

> >

> > Updating the text widget from the timeout does not help - still

> > requires the window focus change or click to display the text.

> >

> > It seems like I could send an expose-event or something from the

> > timeout function to refresh the text widget, but I can't figure out

> > how to do it.

> >

> > I'm kinda new to gtk. Thanks in advance for any help.

> >

> > Mickey.

> >

> >

> >

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>--

>Gustavo João Alves Marques Carneiro

>

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