The return value from a button control created with the BS_AUTOCHECKBOX, BS_AUTORADIOBUTTON, BS_AUTO3STATE, BS_CHECKBOX, BS_RADIOBUTTON, or BS_3STATE style is one of the following values:
Value Meaning
0 Button state is unchecked.
1 Button state is checked.
2 Button state is indeterminate (applies only if the button has the BS_3STATE or BS_AUTO3STATE style).
If the button has any other style, the return value is 0.
Remarks
Retrieves the check state of a radio button or check box.
CButton Overview | Class Members | Hierarchy Chart
See Also CButton::GetState, CButton::SetState, CButton::SetCheck,BM_GETCHECK
用(CButton *)GetDlgItem(IDC_RADIO1)->GetCheck()
=0 Button state is unchecked.
=1 Button state is checked.
=2 Button state is indeterminate (applies only if the button has the BS_3STATE or BS_AUTO3STATE style).