help

[sam1]

hi

does anyone know what this mean?

SWT.error(SWT.ERROR_NULL_ARGUMENT);

is there another virsion of this to write?

[techniner]

This is done for error handling

Form ezample

* @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the stream is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_INVALID_IMAGE - if the image file contains invalid data</li>
 *    <li>ERROR_IO - if an input/output error occurs while reading data</li>
 * </ul>
 */
public ImageData[] load(InputStream stream) {
	if (stream == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	reset();
	data = FileFormat.load(stream, this);
	return data;
}

If the stream is null.. etc etc..

It allows comparison..

[sam1]

so if i had:

public boolean contains (Point pt) {
if (pt == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
return contains(pt.x, pt.y);
}

does it mean if pt == null then it is false else return contains.....?