Widget size within hbox tags
By default, the real width of BUTTONEDIT
, DATEEDIT
, DATETIMEEDIT
and COMBOBOX
widgets are computed as follows:
if item-tag-width > 2
real-width = item-tag-width - 2
else
real-width = item-tag-width
Where item-tag-width represents the number of characters used in the form layout by the item tag, to define the width of the element.
If the default widget size computing does not satisfy the needs, it is possible to specify
the exact with of a BUTTONEDIT
, DATEDIT
or
COMBOBOX
with an hbox tag, combined to the SAMPLE
attribute.
The hbox tag can be used with a :
(colon) and -
(dash)
marker to define the exact number of characters the field can display, while the
SAMPLE
attribute will define the size.
LAYOUT
GRID
{
ButtonEdit A [ba ]
ButtonEdit B [bb: ]
ButtonEdit C [bc : ]
ButtonEdit D [bd -: ]
}
END
END
ATTRIBUTES
BUTTONEDIT ba = FORMONLY.ba, SAMPLE="0", ACTION=zoom1;
BUTTONEDIT bb = FORMONLY.bb, SAMPLE="M", ACTION=zoom2;
BUTTONEDIT bc = FORMONLY.bc, SAMPLE="Pi", ACTION=zoom3;
BUTTONEDIT bd = FORMONLY.bd, SAMPLE="0", ACTION=zoom4;
END
Here the ba
item tag occupies 7 grid columns and gets a real width of 5 (7-2).
The SAMPLE
attribute makes the edit field part as large as 5 characters '0' in the
current font, so with this field you can input or display only 5 digits.
The bb
item tag, which is in an hbox tag that occupies
7 grid columns, gets a width of 2. Since the SAMPLE
attribute is "M", one can input 2 characters as wide as an "M".
The bc
item tag, which is in an hbox tag that occupies
7 grid columns, gets a width of 3 (5-2). Since the SAMPLE
attribute is "Pi", the edit field part will be as large as the word "Pi".
(If SAMPLE
contains more than 1 character it must have
the same number of characters as in the field definition).
When using an hbox tag, one can explicitly specify the width of the
field with the dash size indicator: The bd
, which is in
an hbox tag that occupies 7 grid columns, gets a width of 4 (because of
the dash size indicator). Since the SAMPLE
attribute
is "0", the edit field part will be as large as 4 digits.