The OnDraw Method is available in LEADTOOLS Document and Medical Imaging toolkits.
- e
- An AnnDrawDesignerEventArgs that contains the event data.
Syntax
| Visual Basic (Declaration) | |
|---|---|
Protected Overridable Sub OnDraw( _ ByVal e As AnnDrawDesignerEventArgs _ ) | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As AnnDrawDesigner Dim e As AnnDrawDesignerEventArgs instance.OnDraw(e) | |
| C# | |
|---|---|
protected virtual void OnDraw( AnnDrawDesignerEventArgs e ) | |
| C++/CLI | |
|---|---|
protected: virtual void OnDraw( AnnDrawDesignerEventArgs^ e ) | |
Parameters
- e
- An AnnDrawDesignerEventArgs that contains the event data.
Example
For an example, refer to AnnDesigner.
Remarks
Raising an event invokes the event handler through a delegate. The OnDraw 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 OnDraw in a derived class, be sure to call the base class's OnDraw method so that registered delegates receive the event.
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7