An enumeration representing the styles for drawing the progress bar.
Value | Symbolic name | Description |
| 0 | Gtk::PROGRESS_LEFT_TO_RIGHT | A horizontal progress bar growing from left to right. |
| 1 | Gtk::PROGRESS_RIGHT_TO_LEFT | A horizontal progress bar growing from right to left. |
| 2 | Gtk::PROGRESS_BOTTOM_TO_TOP | A vertical progress bar growing from bottom to top. |
| 3 | Gtk::PROGRESS_TOP_TO_BOTTOM | A vertical progress bar growing from top to bottom. |