MSDN Library: CButton::GetCheck int GetCheck( ) const;Return ValueThe 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.ResRetrieves the check state of a radio button or check box.
CButton::GetCheck
int GetCheck( ) const;Return ValueThe 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.ResRetrieves the check state of a radio button or check box.