TWLabel 컴포넌트를 조금 변형해서 배경 이미지를 넣을려구
컴화일응 했더니 아래와 같은 에러가 나오는 군요!!!!

[Linker Error] Unresolved external '__fastcall TWGradient::SetBMPFileName(const System::AnsiString)' referenced from E:\PROJECT\TRSYSTEM\PROGRAM\PC\리모콘모델생성기\TRS_MR_MAKE.OBJ

이런 에러 처치 방법은 없나요.....

class TWGradient : public TPersistent
{
private:
    WGradientType m_GradType;
    TColor m_FColor, m_BColor;
    Graphics::TBitmap *m_pBmp;
public:
    AnsiString m_BMPFileName;
    TNotifyEvent m_Change;
    __fastcall TWGradient();
    virtual __fastcall ~TWGradient();
    void __fastcall DrawGradient(TCanvas *Canvas, TRect *pRect);
    void __fastcall SetSize(int Width,int Height);
private:
    void __fastcall MakeGradient(void);
    void __fastcall SetGradType(WGradientType GradType);
    void __fastcall SetFColor(TColor FColor);
    void __fastcall SetBColor(TColor BColor);
                //------------------------------------------------
    void __fastcall SetBMPFileName(const AnsiString Fn);
                //________________________________________________
__published:
    __property WGradientType Type = { read = m_GradType, write = SetGradType, default=GT_Horz };
    __property TColor FColor = { read = m_FColor, write = SetFColor, default=clGray };
    __property TColor BColor = { read = m_BColor, write = SetBColor, default=clGray };
                //------------------------------------------------
    __property const AnsiString BMPFileName = { read = m_BMPFileName, write = SetBMPFileName};
                //------------------------------------------------
};