Rich Edit 컨트롤 지정 함수
DGRichEditCatText
DGRichEditFindText
DGRichEditGetFont
DGRichEditGetLength
DGRichEditGetLineCount
DGRichEditGetLineFromPos
DGRichEditGetLineLength
DGRichEditGetLinePos
DGRichEditGetSelect
DGRichEditGetTabSize
DGRichEditGetText
DGRichEditGetTextRange
DGRichEditSetFont
DGRichEditSetLineMaxLength
DGRichEditSetSelect
DGRichEditSetTabSize
DGRichEditSetText
DGRichEditSetTextRange
