Databases Reference
In-Depth Information
In a moment we will discuss the positioning of the objects we are adding, but for
now let's add another listbox, this time using a different method:
1.
Right-click anywhere on the sheet and select
New Sheet Object
|
List Box
.
2.
Select
Aircraft Type
from the
Field
drop-down list.
3.
Click on
OK
to close the dialog window.
The List Box Properties dialog
Besides the default settings, there are quite a few other options that can be set
for listboxes. In this section, we will review the most common of these options.
Right-click on any listbox and select
Properties…
to open the
List Box Properties
dialog window.
While the customization of the listboxes' appearance is quite
flexible, one of the options that cannot be changed, at least
not out-of-the-box, are the colors used to identify selections.
Green always means selected, while white and gray mean
associated and excluded values respectively.
The General tab
As the name implies, the
General
tab contains general options for the listbox.
Notable options are:
•
Title
: This option is used to set the
Title
label to be different from the default
field name. The
Title
label can also be set based on a calculated value.
•
Object ID
: While the title shows the pretty-print frontend name, the
Object
ID
option contains the name under which the listbox is known to QlikView.
This ID can be used to reference the listbox from other QlikView objects.
•
Always One Selected Value
: This checkbox is only available when a single
value is selected at the time we open the
Properties
dialog. This option locks
the listbox so that it can only have one value selected at any given time.
• The
Show Frequency
and
In Percent
checkboxes: These options are used to
display the absolute number of times that each value appears in the active
data set. When
In Percent
is checked, the relative number of appearances
versus the total is shown.
