API:Bde.DBTables.TBDEDataSet.BeforeCancel
Delphi
property BeforeCancel: TDataSetNotifyEvent read FBeforeCancel write FBeforeCancel;
C++
__property BeforeCancel;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | published | Bde.DBTables.pas Bde.DBTables.hpp |
Bde.DBTables | TBDEDataSet |
Description
Occurs before an application executes a request to cancel changes to the active record. {{#multireplace:Bde.DBTables.TBDEDataSet.BeforeCancel|H21=!|H25=%|H28=(|H29=)|H2A=*|H2B=+|H2F=/|H3C=<|H3D==|H3E=>|H5B=[|H5D=]|H5E=^|H7C=|}} inherits from {{#multireplace:Data.DB.TDataSet.BeforeCancel|H21=!|H25=%|H28=(|H29=)|H2A=*|H2B=+|H2F=/|H3C=<|H3D==|H3E=>|H5B=[|H5D=]|H5E=^|H7C=|}}. All content below this line refers to {{#multireplace:Data.DB.TDataSet.BeforeCancel|H21=!|H25=%|H28=(|H29=)|H2A=*|H2B=+|H2F=/|H3C=<|H3D==|H3E=>|H5B=[|H5D=]|H5E=^|H7C=|}}.
Occurs before an application executes a request to cancel changes to the active record.
Write a BeforeCancel event to take specific action before an application carries out a request to cancel changes. BeforeCancel is called by the Cancel method before it cancels a dataset operation such as Edit, Insert, or Delete.
An application might use the BeforeCancel event to record a user's changes in an undo buffer.
BeforeCancel is an event handler of type Data.DB.TDataSetNotifyEvent.