CreateOnDemand
property for PowerScript controls
Applies to
Tab controls
Description
When CreateOnDemand is enabled, all controls on all tab pages of a
Tab control are instantiated when the Tab control is created, but the
Constructor event of controls on hidden tab pages is not triggered until
the user views the tab page either by clicking on the tab page or by
calling the SelectTab function (the SelectTab function sets the
SelectedTab property). Until the Constructor event for a control has run,
a graphical representation of the control is not created, and its handle
is not available. Constructor events for controls on the selected tab page
are always triggered when the Tab control is created.
A window opens more quickly if the creation of a graphical
representation is delayed for tab pages with many controls. However,
scripts cannot refer to a control on a tab page until its Constructor
event has run and a graphical representation has been created.
Usage
In a painter
To set the CreateOnDemand property:
-
Select the CreateOnDemand check box on the General page of the
tab control’s Properties view.
In scripts
The CreateOnDemand property takes a boolean value. The following
example specifies that graphical representations of tab pages are not
created until the tab page is selected:
|
1 |
tab_1.CreateOnDemand = TRUE |
For more information about using this property in scripts, see
the section called “Using Tab Controls in a Window” in Application Techniques.