ExpandLevel – PB Docs 150

ExpandLevel method (DataWindows)

Description

Expands all the groups in a TreeView DataWindow that have
the specified TreeView level.

Controls

DataWindow type

Method applies to

PowerBuilder

DataWindow control

Syntax

[PowerBuilder]

Argument

Description

dw_control

A reference to a TreeView-style DataWindow
control

groupLevel

The TreeView level of the group to be
expanded

Return Values

Returns 1 if the ExpandLevel operation succeeds and one of
the following negative values if it fails:

  • -1

    DataWindow is null

  • -5

    One or more of the parameters are invalid

  • -16

    DataWindow is not a TreeView DataWindow

Usage

A TreeView DataWindow has several TreeView level bands (groups)
that can be expanded and collapsed. You can use the ExpandLevel method
to expand all the groups in a TreeView DataWindow that have a particular TreeView
level.

The ExpandLevel method triggers the Expanding
and Expanded events with a row argument of –1.

Examples

The following example expands all the groups at TreeView
level 2:

See Also


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