Area parts
| qpx_MenubarPart | 1 | Area menubar part |
| qpx_ToolsWidgetPart | 2 | Tools widget part |
| qpx_ZoomWidgetPart | 3 | Zoom widget part |
| qpx_MenubarMask | 2 | Mask for area menubar part |
| qpx_ToolsWidgetMask | 4 | Mask for tools widget part |
| qpx_ZoomWidgetMask | 8 | Mask for zoom widget part |
| qpx_PageNavWidgetPart | 4 | Page navigation widget part |
| qpx_PageNavWidgetPartMask | 16 | Mask for page navigation widget part |