void resizeControl(int yScroll) { if (control != null && !control.isDisposed()) { boolean visible = OS.gtk_expander_get_expanded(handle); if (visible) { int x = OS.GTK_WIDGET_X(clientHandle); int y = OS.GTK_WIDGET_Y(clientHandle); if (x != -1 && y != -1) { int width = OS.GTK_WIDGET_WIDTH(clientHandle); int height = OS.GTK_WIDGET_HEIGHT(clientHandle); int[] property = new int[1]; OS.gtk_widget_style_get(handle, OS.focus_line_width, property, 0); y += property[0] * 2; height -= property[0] * 2; /* * Feature in GTK. When the ExpandBar is resize too small the control * shows up on top of the vertical scrollbar. This happen because the * GtkExpander does not set the size of child smaller than the request * size of its parent and because the control is not parented in the * hierarchy of the GtkScrolledWindow. * The fix is calculate the width ourselves when the scrollbar is visible. */ ScrollBar vBar = parent.verticalBar; if (vBar != null) { if (OS.GTK_WIDGET_VISIBLE(vBar.handle)) { width = OS.GTK_WIDGET_WIDTH(parent.scrolledHandle) - parent.vScrollBarWidth() - 2 * parent.spacing; } } control.setBounds(x, y - yScroll, width, Math.max(0, height), true, true); } } control.setVisible(visible); } }