SchedulerControl.CustomDrawDayHeader Event

Enables day headers to be painted manually.

Namespace: DevExpress.XtraScheduler

Assembly: DevExpress.XtraScheduler.v20.1.dll

Declaration

public event CustomDrawObjectEventHandler CustomDrawDayHeader
Public Event CustomDrawDayHeader As CustomDrawObjectEventHandler

Event Data

The CustomDrawDayHeader event's data class is CustomDrawObjectEventArgs. The following properties provide information specific to this event:

Property Description
Bounds Returns the bounding rectangle of the drawing area.
Cache Gets an object which specifies the storage for the pens, fonts and brushes. Use it for custom painting in Scheduler Reports.
Graphics Gets an object used for painting.
Handled Gets or sets whether an event was handled. If it was handled, the default actions are not required.
ObjectInfo Gets information on the painted element.

Remarks

The CustomDrawDayHeader event is raised before a day header is painted. The event parameter's CustomDrawObjectEventArgs.ObjectInfo property provides all the information necessary to paint a day header. The return value of this property should be typecast to the DayHeader type.

Set the CustomDrawObjectEventArgs.Handled property to true to prohibit default header painting.

You can paint object in a default manner before custom drawing. Use the CustomDrawObjectEventArgs.DrawDefault method for default drawing within event handler.

Examples

This example uses the code that paints day headers with blue gradient color, as illustrated in the image below.

CustomDrawDayHeader_New

public static void scheduler_CustomDrawDayHeader(object sender, CustomDrawObjectEventArgs e)
{
    DayHeader header = e.ObjectInfo as DayHeader;
    // Draws the outer rectangle.
    using(var backBrush = new LinearGradientBrush(e.Bounds,
            Color.LightBlue, Color.Blue, LinearGradientMode.Vertical))
        e.Cache.FillRectangle(backBrush, e.Bounds);
    Rectangle innerRect = Rectangle.Inflate(e.Bounds, -2, -2);
    // Draws the inner rectangle.
    using(var backBrush = new LinearGradientBrush(e.Bounds,
            Color.Blue, Color.LightSkyBlue, LinearGradientMode.Vertical))
        e.Cache.FillRectangle(backBrush, innerRect);
    // Draws the header's caption.
    e.Cache.DrawString(header.Caption, header.Appearance.HeaderCaption.Font,
        Brushes.White, innerRect,
        header.Appearance.HeaderCaption.GetStringFormat());
    e.Handled = true;
}
See Also