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snack form question

Grant Edwards grante at visi.com
Fri Sep 28 10:27:50 EDT 2001 
In article <2990527.oFCf946Emh at lunix.schabi.de>, Markus Schaber wrote:

>> Is it just me, or is do all widgets added to a form end up at
>> cooridnates (-1,-1)?
>> 
>> All widgets get created with a location of (-1,-1) and there
>> doesn't seem to be any way to change the widget's location on a
>> form...
> 
> It would be very helpful to tell us which widget module you
> use.

I'm using the snack module.  It's a python wrapper for the
text-mode UI library "newt" (which uses slang for low level
stuff).

> Also, some code snipplets that create those widgets (or a
> reproducible description how you do it using an interface
> designer) would be helpful.

OK, here's an example:

  import time
  from snack import *

  screen = SnackScreen()

  screen.centeredWindow(40,12,"Example Code")
  f = Form()
  f.add(Label("Label Text"))
  f.draw()
  screen.refresh()

  time.sleep(2)
  screen.finish()

The label containing "Label Text" appears at location (-1,-1).
When a Label object is created, the position is initialized
like so:

static snackWidget * labelWidget(PyObject * s, PyObject * args) {
    char * label;
    snackWidget * widget;

    if (!PyArg_ParseTuple(args, "s", &label)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtLabel(-1, -1, label);

    return widget;
}

The call to newtLabel() creates a label widget and initializes
its postition to -1,-1.

In C applications that use newt, widgets that are positioned on
forms by passing the x/y coordinates to newtLabel() et al when
the widget is created.

I can't find any methods (of either the widget or the form)
that allow the position of the widget to be changed.  However,
if you put the widget on a Grid instead of a Form, the grid's
add() method includes row/colum info that is used by the grid
to control the position of the widget.

For my application I can just use a Grid instead, but it seems
like there's something missing...

-- 
Grant Edwards                   grante             Yow!  Is it NOUVELLE
                                  at               CUISINE when 3 olives are
                               visi.com            struggling with a scallop
                                                   in a plate of SAUCE MORNAY?
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