void createItem(TabItem item, int index) { long /*int*/ list = OS.gtk_container_get_children(handle); int itemCount = 0; if (list != 0) { itemCount = OS.g_list_length(list); OS.g_list_free(list); } if (!(0 <= index && index <= itemCount)) error(SWT.ERROR_INVALID_RANGE); if (itemCount == items.length) { TabItem[] newItems = new TabItem[items.length + 4]; System.arraycopy(items, 0, newItems, 0, items.length); items = newItems; } long /*int*/ boxHandle = gtk_box_new(OS.GTK_ORIENTATION_HORIZONTAL, false, 0); if (boxHandle == 0) error(SWT.ERROR_NO_HANDLES); long /*int*/ labelHandle = OS.gtk_label_new_with_mnemonic(null); if (labelHandle == 0) error(SWT.ERROR_NO_HANDLES); long /*int*/ imageHandle = OS.gtk_image_new(); if (imageHandle == 0) error(SWT.ERROR_NO_HANDLES); OS.gtk_container_add(boxHandle, imageHandle); OS.gtk_container_add(boxHandle, labelHandle); long /*int*/ pageHandle = OS.g_object_new(display.gtk_fixed_get_type(), 0); if (pageHandle == 0) error(SWT.ERROR_NO_HANDLES); if (OS.GTK3) { OS.gtk_widget_override_background_color(pageHandle, OS.GTK_STATE_FLAG_NORMAL, new GdkRGBA()); long /*int*/ region = OS.gdk_region_new(); OS.gtk_widget_input_shape_combine_region(pageHandle, region); OS.gdk_region_destroy(region); } OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); OS.gtk_notebook_insert_page(handle, pageHandle, boxHandle, index); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); OS.gtk_widget_show(boxHandle); OS.gtk_widget_show(labelHandle); OS.gtk_widget_show(pageHandle); item.state |= HANDLE; item.handle = boxHandle; item.labelHandle = labelHandle; item.imageHandle = imageHandle; item.pageHandle = pageHandle; System.arraycopy(items, index, items, index + 1, itemCount++ - index); items[index] = item; if ((state & FOREGROUND) != 0) { item.setForegroundColor(getForegroundColor()); } if ((state & FONT) != 0) { item.setFontDescription(getFontDescription()); } if (itemCount == 1) { OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); OS.gtk_notebook_set_current_page(handle, 0); OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); Event event = new Event(); event.item = items[0]; sendSelectionEvent(SWT.Selection, event, false); // the widget could be destroyed at this point } }