How to use

forceResize

method

in

org.eclipse.swt.widgets.Composite

@Override
Rectangle getClientAreaInPixels () {
  checkWidget();
  if ((state & CANVAS) != 0) {
    if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
      return new Rectangle (0, 0, 0, 0);
    }
    forceResize ();
    int /*long*/ clientHandle = clientHandle ();
    GtkAllocation allocation = new GtkAllocation();
    OS.gtk_widget_get_allocation (clientHandle, allocation);
    int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
    int height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
    return new Rectangle (0, 0, width, height);
  }
  return super.getClientAreaInPixels();
}

@Override
Rectangle getClientAreaInPixels () {
  checkWidget();
  if ((state & CANVAS) != 0) {
    if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
      return new Rectangle (0, 0, 0, 0);
    }
    forceResize ();
    long /*int*/ clientHandle = clientHandle ();
    GtkAllocation allocation = new GtkAllocation();
    OS.gtk_widget_get_allocation (clientHandle, allocation);
    int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
    int height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
    return new Rectangle (0, 0, width, height);
  }
  return super.getClientAreaInPixels();
}

@Override
Rectangle getClientAreaInPixels () {
  checkWidget();
  if ((state & CANVAS) != 0) {
    if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
      return new Rectangle (0, 0, 0, 0);
    }
    forceResize ();
    int /*long*/ clientHandle = clientHandle ();
    GtkAllocation allocation = new GtkAllocation();
    OS.gtk_widget_get_allocation (clientHandle, allocation);
    int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
    int height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
    return new Rectangle (0, 0, width, height);
  }
  return super.getClientAreaInPixels();
}

if (result != null) return result;
if ((state & CANVAS) != 0) {
  forceResize ();
  int nSavedDC = OS.SaveDC (wParam);
  RECT rect = new RECT ();

int index = indexOf (sortColumn);
if (index != -1) {
  parent.forceResize ();
  int clrSortBk = getSortColumnPixel ();
  RECT columnRect = new RECT (), headerRect = new RECT ();