SDKDemoFrame.java

import java.awt.*;

class SDKDemoFrame extends Frame
{
	public SDKDemoFrame(String str)
	{
		super (str);
	}

	public boolean handleEvent(Event evt)
	{
        switch (evt.id)
		{
			case Event.WINDOW_DESTROY:
				dispose();
				System.exit(0);
				return true;
			default:
				return super.handleEvent(evt);
		}			 
	}
	public void dispose()
	{

        // Set all vars to null to make sure that the reference counts are decremented 
		// to release server application
		
		if (parent.theDrawingCanvas.m_IDrawings != null)
		   parent.theDrawingCanvas.m_IDrawings.Close();  // close any open TC file

		// it is good practice to release the obtained interfaces in reverse or
		// to how they were obtained, although for Java, that is up to the virual 
		// machines garbage collection.
   		parent.theDrawingCanvas.m_ITheView = null;
        parent.theDrawingCanvas.m_IViews = null;
        parent.theDrawingCanvas.m_ITheDrawing = null;
        parent.theDrawingCanvas.m_IDrawings = null;
    	parent.theDrawingCanvas.m_IApp = null;
		
		super.dispose();  // call the action that remove window and resources.

	}

	public void setParent(SDKDemo parent)
	{   this.parent = parent;
	}


	SDKDemo parent;
    DrawingCanvas theDrawingCanvas = null;
}

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