if (clearFunc.getAddress() == 0) SWT.error(SWT.ERROR_NO_MORE_CALLBACKS);
ClipboardProxy(Display display) {		this.display = display;	getFunc = new Callback( this, "getFunc", 4); //$NON-NLS-1$	clearFunc = new Callback( this, "clearFunc", 2); //$NON-NLS-1$}