| add | A horizontal layout can be used for arranging controls horizontally. |
| add_button | A horizontal layout can be used for arranging controls horizontally. |
| add_checkbox | A horizontal layout can be used for arranging controls horizontally. |
| add_combobox | A horizontal layout can be used for arranging controls horizontally. |
| add_display | A horizontal layout can be used for arranging controls horizontally. |
| add_heading | A horizontal layout can be used for arranging controls horizontally. |
| add_horizontallayout | A horizontal layout can be used for arranging controls horizontally. |
| add_menubar | A horizontal layout can be used for arranging controls horizontally. |
| add_slider | A horizontal layout can be used for arranging controls horizontally. |
| clear | A horizontal layout can be used for arranging controls horizontally. |
| height | A horizontal layout can be used for arranging controls horizontally. |
| htmltooltip | A horizontal layout can be used for arranging controls horizontally. |
| remove | A horizontal layout can be used for arranging controls horizontally. |
| tooltip | A horizontal layout can be used for arranging controls horizontally. |
| width | A horizontal layout can be used for arranging controls horizontally. |