JVCL Help:TJvDBTreeViewDataLink
JVCL Help: TJvDBTreeViewDataLink Class
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TJvDBTreeViewDataLink
run\JvDBTreeView.pas
Summary
Manages the link and event responses for the data source in the data-aware tree view control.
Pascal
run\JvDBTreeView.pas
TJvDBTreeViewDataLink = class(TDataLink);
Description
TJvDBTreeViewDataLink is a TDataLink descendant used to help the data-aware tree view manage its link to the data source and respond to data events.
TJvDBTreeViewDataLink introduces a new member that stores the TJvCustomDBTreeView instance for the data link.
TJvDBTreeViewDataLink provides overridden methods in the protected interface for the class that allow responding to dataset events that occur in the following event categories:
- Respond to changes in the values of fields.
- Respond to changes in record currency after scrolling.
- Respond to changes in the editing state of the dataset.
- Keep track of unposted edits.
Applications should not need to explicitly create instance of TJvDBTreeViewDataLink; it is automatically created when the data-aware tree view control is initialized.
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