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View this topic on docs.devexpress.com (Learn more)

VGridControlBase.CustomDrawRowValueCell Event

Enables data cells to be painted manually.

Namespace:DevExpress.XtraVerticalGrid
Assembly:DevExpress.XtraVerticalGrid.v19.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type CustomDrawRowValueCellEventArgs containing data related to this event.

The following CustomDrawRowValueCellEventArgs properties provide information specific to this event.
Property Description
Appearance Gets the painted element's appearance settings.
Bounds Gets a value specifying limits for the drawing area.
Cache Gets an object which specifies the storage for the most used pens, fonts and brushes.
CellIndex Gets the index of the painted row data cell.
CellText Gets or sets the text displayed in the painted cell.
CellValue Gets the painted cell's value.
Enabled Gets a value indicating whether end-users can modify cell values within the painted row.
Graphics Gets an object used to paint.
Handled Gets or sets a value specifying whether an event was handled, if handled, default actions are not required.
IsRightToLeft Gets a value indicating whether the VGridControl's elements are aligned to support locales using right-to-left fonts.
Item Returns the RepositoryItem for which the CustomDrawRowValueCell event was raised.
ObjectArgs Gets an object containing information about the painted element.
Painter Gets the painter object that provides the default element's painting mechanism.
Properties Provides properties specific to the row being custom painted.
RecordIndex Gets the index of the painted cell's record.
Row Gets the row whose element is to be drawn.
RowValueInfo Gets information on the row value view.

Expanded Remarks

The CustomDrawRowValueCell event is raised before a data cell is painted. The cell is identified by the event parameter's CustomDrawRowEventArgs.Row, CustomDrawRowValueCellEventArgs.RecordIndex and CustomDrawRowValueCellEventArgs.CellIndex properties.

The CustomDrawRowValueCell event can be used for two purposes:

  • To manually paint all or only particular data cells. Note that you need to set the CustomDrawEventArgs.Handled parameter to true to indicate that the default painting is not required for the cell.
  • Change the cell's settings (text, appearance, etc.) and leave the CustomDrawEventArgs.Handled parameter set to false. This will paint cells using the default mechanism but with modified settings.
Important

Never change cell values or modify the control's layout on this event, or any other event designed to tune the control's appearance. Any action that causes a layout update can cause the control to malfunction.

Expanded Example

The following sample code handles the CustomDrawRowValueCell and CustomDrawSeparator events to custom paint row cells and cell separators. The CustomDrawSeparatorEventArgs.IsHeaderSeparator property is used to identify whether the cell separator belongs to a row header in order to omit it. Thus, separators contained within the row headers are painted using the default mechanism.

The image below shows the result.

Expanded See Also

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