public SwtCanvas(final Composite composite, final int style, final GLData glData) { super(composite, style, glData); _passedGLData = getGLData(); setCurrent(); addListener(SWT.Resize, event -> { final Rectangle clientArea = getClientArea(); for (final ICanvasListener l : _listeners) { l.onResize(clientArea.width, clientArea.height); } }); }