UINT GetState() const;
Specifies the current state of the button control. You can use the following masks against the return value to extract information about the state:
| Mask | Meaning |
| 0x0003 | Specifies the check state (radio buttons and check boxes only). A 0 indicates the button is unchecked. A 1 indicates the button is checked. A radio button is checked when it contains a dot (.). A check box is checked when it contains an . A 2 indicates the check state is indeterminate (three-state check boxes only). The state of a three-state check box is indeterminate when it contains a halftone pattern. |
| 0x0004 | Specifies the highlight state. A nonzero value indicates that the button is highlighted. A button is highlighted when the user clicks and holds the left mouse button. The highlighting is removed when the user releases the mouse button. |
| 0x0008 | Specifies the focus state. A nonzero value indicates that the button has the focus. |
CButton::GetCheck, CButton::SetCheck, CButton::SetState, BM_GETSTATE