PivotGridControl.CustomDrawFieldHeaderArea Event
Enables header areas to be painted manually.
Namespace: DevExpress.XtraPivotGrid
Assembly: DevExpress.XtraPivotGrid.v23.2.dll
NuGet Package: DevExpress.Win.PivotGrid
Declaration
Event Data
The CustomDrawFieldHeaderArea event's data class is PivotCustomDrawHeaderAreaEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Appearance | Gets the painted element’s appearance settings. Inherited from PivotCustomDrawEventArgs. |
| Area | Gets a value which specifies the header area currently being painted. |
| Bounds | Gets the bounding rectangle of the painted element. Inherited from PivotCustomDrawEventArgs. |
| Graphics | Gets an object used to paint an element. Inherited from PivotCustomDrawEventArgs. |
| GraphicsCache | Gets an object which specifies the storage for the most used pens, fonts and brushes. Inherited from PivotCustomDrawEventArgs. |
| Handled | Gets or sets whether an event was handled, if it was handled the default actions are not required. Inherited from PivotCustomDrawEventArgs. |
| ThreadSafeArgs | Gets an event parameter that provides thread-safe access to event data. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| DefaultDraw() | Performs default painting of an element. Inherited from PivotCustomDrawEventArgs. |
Remarks
The CustomDrawFieldHeaderArea event is raised before the header area is painted and allows it to be painted manually. The event parameter provides all the information necessary to paint an area. The PivotCustomDrawHeaderAreaEventArgs.Area property identifies the header area currently being painted.
Set the PivotCustomDrawEventArgs.Handled property to true to prohibit the default area painting.
Important Note: custom drawing of any kind is ignored when printing PivotGridControl.
To access event data while an asynchronous operation is being performed, use a thread-safe event parameter returned by the PivotCustomDrawHeaderAreaEventArgs.ThreadSafeArgs property. To learn more, see Asynchronous Mode.
Important
Do not change cell values, modify the control’s layout, or change the control’s object model in the events used for custom control painting. Actions that update the layout can cause the control to malfunction.