Re: [XForms] Screen refresh in HP-UX - ITANIUM

[Donato Lorenzo López]

Hi,

 speaking with my costumer's developer team (they know how to program with XForms), they also said to "freeze" the form to solve the problem, but they wanted to know why this problem didn't appear in old machine.
 
 I'll say them to "freeze" the form (or maybe I'll do it), because yes, this loop sends strings at a very high rate.

 It's perceptible, but well, you can see the lines in the browser all the time... It's like one film with missing frames... well, something like that :)

 Thanks a lot, people. And sorry for disturbing you with so small things! ;)

Best regards,

Donato

> Date: Tue, 12 Apr 2011 15:29:29 +0200
> From: address@hidden
> To: address@hidden; address@hidden
> Subject: Re: [XForms] Screen refresh in HP-UX - ITANIUM
>
> Hi Donato,
>
> Sorry if your mail hasn't made it to the mailing list - you're
> not subscribed, thus I have to "approve" your mails and at the
> moment the administration web interface is down... Thus I copy
> all of your mail here.
>
> On Tue, Apr 12, 2011 at 07:31:10AM +0000, Donato Lorenzo López wrote:
> > i was really surprised with so fast answer :) I needed to be at customer's
> > "home", to give you more information.
> >
> > Origin Machine:
> > - HP-UX B.11.23 (PA-RISC).
> > - Compiling in 32-bit mode.
> > - Working under X11R5.
> > - XForms version: 0.88.
> > New Machine:
> > - HP-UX B.11.31 (ITANIUM).
> > - Compiling in 32-bit mode.
> > - Working under X11R6.
> > - OpenGL: B6836AA B.11.22.01 HP-UX 3D Graphics API Runtime and Developer's
> > Kit
> > - XForms version: 1.0.93sp1 (with JPeg 8, from ijg.org).
> >
> > The object that "blinks", is created like that:
> > (...)
> > FL_OBJECT * lstQuery;
> > (...)
> > FL_OBJECT *obj;
> > lstQuery = obj = fl_add_browser( FL_HOLD_BROWSER, 20, 190, 920, 430, "" );
> > fl_set_object_color( obj, FL_LEFT_BCOL, FL_DARKORANGE );
> > fl_set_object_lsize( obj, FL_MEDIUM_SIZE );
> > fl_set_object_lstyle( obj, 15 );
> > fl_set_object_callback( obj, Consulta_Sel, 0 );
> > (...)
> > fl_set_browser_fontstyle(fd_frmConsultas->lstConsulta,FL_FIXEDBOLD_STYLE);
> > fl_set_browser_fontsize(fd_frmConsultas->lstConsulta,14);
> >
> > And then, the steps to fill it with data is :
> > fl_clear_browser(lstQuery);
> > (...)
> > while () {
> > sprintf(strValues,"%-6.6d %-10.10s ...", value1, value2, ...;
> > fl_add_browser_line(lstQuery, strValues);
> > }
> >
> > The problem is refreshing the browser inside this while {}. It's kind of
> > slow repainting the object.
>
> This could be due to a bug - I rewrote parts of the browser
> class for one of the newer XForms versions. But before I
> jump to conclusions, please allow a few more questions: I
> guess that isn't such a "tight" loop as it looks like? I.e.
> this probably doesn't sent new strings to the browser at the
> maximum possible rate, or does it? If it should send strings
> at a very high rate I would support Joel's suggestion to
> "freeze" the form before starting strings to it and unfreeze
> it afterwards. And I'm also still wondering what kind of fre-
> quency this "blinking" has. Is it just a barely perceptible
> flicker or are there longer delays of the redraws? "Kind of
> slow" is a bit broad;-)
> Best regards, Jens
> --
> \ Jens Thoms Toerring ________ address@hidden
> \_______________________________ http://toerring.de