TDataEvent¶
Various events that are sent to datasources.
Declaration¶
Source position: db.pas line 59
type
TDataEvent = (deFieldChange,deRecordChange,deDataSetChange,
deDataSetScroll,deLayoutChange,deUpdateRecord,
deUpdateState,deCheckBrowseMode,dePropertyChange,
deFieldListChange,deFocusControl,deParentScroll,
deConnectChange,deReconcileError,deDisabledStateChange)Values¶
| Value | Description |
|---|---|
| deFieldChange | A field value changed. |
| deRecordChange | The current record changed. |
| deDataSetChange | The dataset property changed. |
| deDataSetScroll | The dataset scrolled to another record. |
| deLayoutChange | The layout properties of one of the fields changed. |
| deUpdateRecord | The record is being updated. |
| deUpdateState | The dataset state is updated. |
| deCheckBrowseMode | The browse mode is being checked. |
| dePropertyChange | Unused. |
| deFieldListChange | Event sent when the list of fields of a dataset changes. |
| deFocusControl | Event sent whenever a control connected to a field should be focused. |
| deParentScroll | Unused. |
| deConnectChange | Unused. |
| deReconcileError | Unused. |
| deDisabledStateChange | Unused. |
Description¶
TDataEvent describes the various events that can be sent to TDatasource instances connected to a TDataset instance.
See also¶
| Name | Description |
|---|---|
| TDatasource | Component representing the link between a local (GUI) component and a dataset. |
| TDataset | Base class for records-based data-access. |
| TDataLink | Data event handling agent for controls. |