AfterDrawingObjects Event

C#
Visual Basic
Objective-C
Java
C++

public event EventHandler<AnnPaintEventArgs> AfterDrawingObjects

'Declaration
 
Public Event AfterDrawingObjects As EventHandler(Of AnnPaintEventArgs)

'Usage
 
Dim instance As AnnContainer
Dim handler As EventHandler(Of AnnPaintEventArgs)
 
AddHandler instance.AfterDrawingObjects, handler

public:
event EventHandler<AnnPaintEventArgs^>^ AfterDrawingObjects

The event handler receives an argument of type AnnPaintEventArgs containing data related to this event. The following AnnPaintEventArgs properties provide information specific to this event.

Property	Description
Graphics	Gets the graphics used to paint.

You can prevent the AnnContainer from raising this event by calling DisableDrawObjectEvents. You can re-enable the raising of this event by calling EnableDrawObjectEvents.

This example will draw a hatch brush on top of every object in the container.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Annotations
Imports Leadtools.Codecs
Imports Leadtools.WinForms

Public Sub AnnContainer_AfterDrawingObjects(ByVal container As AnnContainer)
   ' theContainer is set so that it can be accessed in the container_BeforeDrawingObjects event
   theContainer = container
   AddHandler container.AfterDrawingObjects, AddressOf container_AfterDrawingObjects
End Sub
Private Sub container_AfterDrawingObjects(ByVal sender As Object, ByVal e As AnnPaintEventArgs)
   Dim graphics As Graphics = e.Graphics

   ' set the current transform from the container
   graphics.MultiplyTransform(theContainer.Transform)

   Dim br As Brush = New HatchBrush(HatchStyle.DiagonalCross, Color.Black, Color.Transparent)
   Try
      ' enum the objects in the container
      For Each obj As AnnObject In theContainer.Objects
         graphics.FillRectangle(br, obj.BoundingRectangle.ConvertTo(theContainer.UnitConverter, AnnUnit.Pixel).ToRectangleF())
      Next obj
   Finally
      CType(br, IDisposable).Dispose()
   End Try
End Sub

using Leadtools;
using Leadtools.Annotations;
using Leadtools.Codecs;
using Leadtools.WinForms;

public void AnnContainer_AfterDrawingObjects(AnnContainer container)
{
   // theContainer is set so that it can be accessed in the container_BeforeDrawingObjects event
   theContainer = container;
   container.AfterDrawingObjects += new EventHandler<AnnPaintEventArgs>(container_AfterDrawingObjects);
}
private void container_AfterDrawingObjects(object sender, AnnPaintEventArgs e)
{
   Graphics graphics = e.Graphics;

   // set the current transform from the container
   graphics.MultiplyTransform(theContainer.Transform);

   using(Brush br = new HatchBrush(HatchStyle.DiagonalCross, Color.Black, Color.Transparent))
   {
      // enum the objects in the container
      foreach(AnnObject obj in theContainer.Objects)
         graphics.FillRectangle(br, obj.BoundingRectangle.ConvertTo(theContainer.UnitConverter, AnnUnit.Pixel).ToRectangleF());
   }
}

Target Platforms

Reference

AnnContainer Class
AnnContainer Members