LEADTOOLS Windows Forms (Leadtools.WinForms assembly)
LEAD Technologies, Inc

OnImageColorChanged Method

Example 





An System.EventArgs that contains the event data.
Raises the ImageColorChanged event.
Syntax
protected virtual void OnImageColorChanged( 
   EventArgs e
)
'Declaration
 
Protected Overridable Sub OnImageColorChanged( _
   ByVal e As EventArgs _
) 
'Usage
 
Dim instance As RasterImagePanViewer
Dim e As EventArgs
 
instance.OnImageColorChanged(e)
protected virtual void OnImageColorChanged( 
   ~Remove~ e
)
 function Leadtools.WinForms.RasterImagePanViewer.OnImageColorChanged( 
   e 
)
protected:
virtual void OnImageColorChanged( 
   EventArgs^ e
) 

Parameters

e
An System.EventArgs that contains the event data.
Remarks
Raising an event invokes the event handler through a delegate. The OnImageColorChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class. Notes to Inheritors: When overriding OnImageColorChanged in a derived class, be sure to call the base class's OnImageColorChanged method so that registered delegates receive the event.
Example
 
Public Class MyRasterImagePanViewer
   Inherits RasterImagePanViewer
   '.
   '.
   '.
   Protected Overrides Sub OnViewerChanged(ByVal e As EventArgs)
      MyBase.OnViewerChanged(e)
      Console.WriteLine("OnViewerChanged is called")
   End Sub

   Protected Overrides Sub OnRectangleColorChanged(ByVal e As EventArgs)
      MyBase.OnRectangleColorChanged(e)

      Console.WriteLine("OnRectangleColorChanged is called")
   End Sub

   Protected Overrides Sub OnImageColorChanged(ByVal e As EventArgs)
      MyBase.OnImageColorChanged(e)

      Console.WriteLine("OnImageColorChanged is called")
   End Sub

   Protected Overrides Sub OnClipCursorChanged(ByVal e As EventArgs)
      MyBase.OnClipCursorChanged(e)

      Console.WriteLine("OnClipCursorChanged is called")
   End Sub

   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      MyBase.OnPaint(e)

      Console.WriteLine("OnPaint is called")
   End Sub

   Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs)
      MyBase.OnMouseDown(e)

      Console.WriteLine("OnMouseDown is called")
   End Sub

   Protected Overrides Sub OnMouseMove(ByVal e As MouseEventArgs)
      MyBase.OnMouseMove(e)

      Console.WriteLine("OnMouseMove is called")
   End Sub

   Protected Overrides Sub OnMouseUp(ByVal e As MouseEventArgs)
      MyBase.OnMouseUp(e)

      Console.WriteLine("OnMouseUp is called")
   End Sub

   Protected Overrides Sub OnLostFocus(ByVal e As EventArgs)
      MyBase.OnLostFocus(e)

      Console.WriteLine("OnLostFocus is called")
   End Sub

   Protected Overrides Sub OnSizeChanged(ByVal e As EventArgs)
      MyBase.OnSizeChanged(e)

      Console.WriteLine("OnSizeChanged is called")
   End Sub
End Class
public class MyRasterImagePanViewer : RasterImagePanViewer
{
   //.
   //.
   //.
   protected override void OnViewerChanged(EventArgs e)
   {
      base.OnViewerChanged(e);
      Console.WriteLine("OnViewerChanged is called");
   }

   protected override void OnRectangleColorChanged(EventArgs e)
   {
      base.OnRectangleColorChanged(e);

      Console.WriteLine("OnRectangleColorChanged is called");
   }

   protected override void OnImageColorChanged(EventArgs e)
   {
      base.OnImageColorChanged(e);

      Console.WriteLine("OnImageColorChanged is called");
   }

   protected override void OnClipCursorChanged(EventArgs e)
   {
      base.OnClipCursorChanged(e);

      Console.WriteLine("OnClipCursorChanged is called");
   }

   protected override void OnPaint(PaintEventArgs e)
   {
      base.OnPaint(e);

      Console.WriteLine("OnPaint is called");
   }

   protected override void OnMouseDown(MouseEventArgs e)
   {
      base.OnMouseDown(e);

      Console.WriteLine("OnMouseDown is called");
   }

   protected override void OnMouseMove(MouseEventArgs e)
   {
      base.OnMouseMove(e);

      Console.WriteLine("OnMouseMove is called");
   }

   protected override void OnMouseUp(MouseEventArgs e)
   {
      base.OnMouseUp(e);

      Console.WriteLine("OnMouseUp is called");
   }

   protected override void OnLostFocus(EventArgs e)
   {
      base.OnLostFocus(e);

      Console.WriteLine("OnLostFocus is called");
   }

   protected override void OnSizeChanged(EventArgs e)
   {
      base.OnSizeChanged(e);

      Console.WriteLine("OnSizeChanged is called");
   }
}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

RasterImagePanViewer Class
RasterImagePanViewer Members

 

 


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