CCheck constructor

CCheck(bool Checked,const char* Format, const char* Text, int Row, int Col, int Width, bool IsRadio = false);
 Passes the Row, Col, Width and "1" to row, col, width and height arguments of CField and directly initializes* _Label with Text, 0, 4, and (Width-4) for Str, Row, Col and Len, arguments of CLabel's Constructor.
After I spent some time, I figured out that
": CField(Row,Col,Width,1) : _Label(Text,0,4,Width-4), _flag(Checked), _radio(IsRadio)" didn't work.
Only ": CField(Row,Col,Width,1), _Label(Text,0,4,Width-4), _flag(Checked), _radio(IsRadio)" worked.