The OnBeforeObjectChanged Method is available in LEADTOOLS Document and Medical Imaging toolkits.
- e
- An AnnBeforeObjectChangedEventArgs that contains the event data.
Syntax
| Visual Basic (Declaration) | |
|---|---|
Protected Overridable Sub OnBeforeObjectChanged( _ ByVal e As AnnBeforeObjectChangedEventArgs _ ) | |
| Visual Basic (Usage) |  Copy Code |
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Dim instance As AnnAutomation Dim e As AnnBeforeObjectChangedEventArgs instance.OnBeforeObjectChanged(e) | |
| C# | |
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protected virtual void OnBeforeObjectChanged( AnnBeforeObjectChangedEventArgs e ) | |
| C++/CLI | |
|---|---|
protected: virtual void OnBeforeObjectChanged( AnnBeforeObjectChangedEventArgs^ e ) | |
Parameters
- e
- An AnnBeforeObjectChangedEventArgs that contains the event data.
Example
For an example, refer to AnnAutomation.BeforeObjectChanged.
Remarks
Raising an event invokes the event handler through a delegate. The OnBeforeObjectChanged 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 OnBeforeObjectChanged in a derived class, be sure to call the base class's OnBeforeObjectChanged 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