Style Constants
| Constant | Value | Description |
| tbrDefault | 0 | The button is a regular push button. |
| tbrCheck | 1 | The button is a check button. |
| tbrButtonGroup | 2 | The button remains pressed until another button in the group is pressed. Exactly one button in the group is pressed at any time. |
| tbrSeparator | 3 | The button functions as a separator with a fixed width of 8 pixels. |
| tbrPlaceholder | 4 | The button is like a separator in appearance and functionality but has a settable width. |
Value Constants
| Constant | Value | Description |
| tbrUnpressed | 0 | The button is not currently pressed or checked. |
| tbrPressed | 1 | The button is currently pressed or checked. |