Name: rlT66838			Date: 07/23/97


calling createImage(int,int) of the Component
class always returns null instead of the 
requested image

======================================================================

In the following code, the call to createImage returns NULL and
the next line of code raises a java.lang.NullPointerException.  This happens 
on Solaris and NT 4.0.  Please look at the constructor for ScribbleCanvas.


class ScribbleCanvas extends Canvas
{
  Image		drawImg;
  Graphics	drawGr;
  int		xprev, yprev;
  
  public void paint(Graphics g)
  {
    g.drawImage(drawImg, 0, 0, null);
  }

  public ScribbleCanvas()
  {
     drawImg	= createImage(100,100);
     drawGr	= drawImg.getGraphics();
     setBackground(Color.gray);
     setSize(300,300);
  }

  public boolean mouseDown(Event evt, int x, int y)
  {
    xprev = x;
    yprev = y;

    return true;
  }

  public boolean mouseDrag(Event evt, int x, int y)
  {
     drawGr.drawLine(xprev, yprev, x, y);
     xprev = x;
     yprev = y;
  
     repaint();
     return true;
  }
}



joon.oh@Eng 1997-09-29