diff --git a/fxbarcode/BC_TwoDimWriter.h b/fxbarcode/BC_TwoDimWriter.h
index 228a2e0..22c80ad 100644
--- a/fxbarcode/BC_TwoDimWriter.h
+++ b/fxbarcode/BC_TwoDimWriter.h
@@ -25,7 +25,7 @@
                             int32_t codeHeight);
   virtual void RenderDeviceResult(CFX_RenderDevice* device,
                                   const CFX_Matrix* matrix);
-  virtual bool SetErrorCorrectionLevel(int32_t level) = 0;
+
   int32_t GetErrorCorrectionLevel() const;
 
  protected:
diff --git a/fxbarcode/BC_Writer.cpp b/fxbarcode/BC_Writer.cpp
index 8d639d3..711b82a 100644
--- a/fxbarcode/BC_Writer.cpp
+++ b/fxbarcode/BC_Writer.cpp
@@ -53,6 +53,22 @@
   return false;
 }
 
+bool CBC_Writer::SetWideNarrowRatio(int8_t ratio) {
+  return false;
+}
+
+bool CBC_Writer::SetStartChar(char start) {
+  return false;
+}
+
+bool CBC_Writer::SetEndChar(char end) {
+  return false;
+}
+
+bool CBC_Writer::SetErrorCorrectionLevel(int32_t level) {
+  return false;
+}
+
 RetainPtr<CFX_DIBitmap> CBC_Writer::CreateDIBitmap(int32_t width,
                                                    int32_t height) {
   auto pDIBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
diff --git a/fxbarcode/BC_Writer.h b/fxbarcode/BC_Writer.h
index 3751b93..7435807 100644
--- a/fxbarcode/BC_Writer.h
+++ b/fxbarcode/BC_Writer.h
@@ -25,6 +25,10 @@
   virtual void SetBackgroundColor(FX_ARGB backgroundColor);
   virtual void SetBarcodeColor(FX_ARGB foregroundColor);
   virtual bool SetTextLocation(BC_TEXT_LOC location);
+  virtual bool SetWideNarrowRatio(int8_t ratio);
+  virtual bool SetStartChar(char start);
+  virtual bool SetEndChar(char end);
+  virtual bool SetErrorCorrectionLevel(int32_t level);
 
  protected:
   RetainPtr<CFX_DIBitmap> CreateDIBitmap(int32_t width, int32_t height);
diff --git a/fxbarcode/cbc_codabar.cpp b/fxbarcode/cbc_codabar.cpp
index f3a3a62..700291b 100644
--- a/fxbarcode/cbc_codabar.cpp
+++ b/fxbarcode/cbc_codabar.cpp
@@ -31,18 +31,6 @@
 
 CBC_Codabar::~CBC_Codabar() {}
 
-bool CBC_Codabar::SetStartChar(char start) {
-  return GetOnedCodaBarWriter()->SetStartChar(start);
-}
-
-bool CBC_Codabar::SetEndChar(char end) {
-  return GetOnedCodaBarWriter()->SetEndChar(end);
-}
-
-bool CBC_Codabar::SetWideNarrowRatio(int8_t ratio) {
-  return GetOnedCodaBarWriter()->SetWideNarrowRatio(ratio);
-}
-
 bool CBC_Codabar::Encode(const WideStringView& contents) {
   if (contents.IsEmpty())
     return false;
diff --git a/fxbarcode/cbc_codabar.h b/fxbarcode/cbc_codabar.h
index bf8a21e..e8a6279 100644
--- a/fxbarcode/cbc_codabar.h
+++ b/fxbarcode/cbc_codabar.h
@@ -24,9 +24,6 @@
   bool Encode(const WideStringView& contents) override;
   bool RenderDevice(CFX_RenderDevice* device,
                     const CFX_Matrix* matrix) override;
-  bool SetWideNarrowRatio(int8_t ratio) override;
-  bool SetStartChar(char start) override;
-  bool SetEndChar(char end) override;
 
  private:
   CBC_OnedCodaBarWriter* GetOnedCodaBarWriter();
diff --git a/fxbarcode/cbc_code39.cpp b/fxbarcode/cbc_code39.cpp
index 6aa3646..2031650 100644
--- a/fxbarcode/cbc_code39.cpp
+++ b/fxbarcode/cbc_code39.cpp
@@ -61,10 +61,6 @@
   return BC_CODE39;
 }
 
-bool CBC_Code39::SetWideNarrowRatio(int8_t ratio) {
-  return GetOnedCode39Writer()->SetWideNarrowRatio(ratio);
-}
-
 CBC_OnedCode39Writer* CBC_Code39::GetOnedCode39Writer() {
   return static_cast<CBC_OnedCode39Writer*>(m_pBCWriter.get());
 }
diff --git a/fxbarcode/cbc_code39.h b/fxbarcode/cbc_code39.h
index 4f87ba7..26f0457 100644
--- a/fxbarcode/cbc_code39.h
+++ b/fxbarcode/cbc_code39.h
@@ -25,7 +25,6 @@
   bool Encode(const WideStringView& contents) override;
   bool RenderDevice(CFX_RenderDevice* device,
                     const CFX_Matrix* matrix) override;
-  bool SetWideNarrowRatio(int8_t ratio) override;
 
  private:
   CBC_OnedCode39Writer* GetOnedCode39Writer();
diff --git a/fxbarcode/cbc_codebase.cpp b/fxbarcode/cbc_codebase.cpp
index 6a04a25..c31ee6c 100644
--- a/fxbarcode/cbc_codebase.cpp
+++ b/fxbarcode/cbc_codebase.cpp
@@ -35,19 +35,19 @@
 }
 
 bool CBC_CodeBase::SetWideNarrowRatio(int8_t ratio) {
-  return false;
+  return m_pBCWriter->SetWideNarrowRatio(ratio);
 }
 
 bool CBC_CodeBase::SetStartChar(char start) {
-  return false;
+  return m_pBCWriter->SetStartChar(start);
 }
 
 bool CBC_CodeBase::SetEndChar(char end) {
-  return false;
+  return m_pBCWriter->SetEndChar(end);
 }
 
 bool CBC_CodeBase::SetErrorCorrectionLevel(int32_t level) {
-  return false;
+  return m_pBCWriter->SetErrorCorrectionLevel(level);
 }
 
 bool CBC_CodeBase::SetCharEncoding(int32_t encoding) {
diff --git a/fxbarcode/cbc_codebase.h b/fxbarcode/cbc_codebase.h
index be49f8a..86d10c3 100644
--- a/fxbarcode/cbc_codebase.h
+++ b/fxbarcode/cbc_codebase.h
@@ -29,12 +29,12 @@
   virtual bool Encode(const WideStringView& contents) = 0;
   virtual bool RenderDevice(CFX_RenderDevice* device,
                             const CFX_Matrix* matrix) = 0;
-  virtual bool SetWideNarrowRatio(int8_t ratio);
-  virtual bool SetStartChar(char start);
-  virtual bool SetEndChar(char end);
-  virtual bool SetErrorCorrectionLevel(int32_t level);
 
   bool SetTextLocation(BC_TEXT_LOC location);
+  bool SetWideNarrowRatio(int8_t ratio);
+  bool SetStartChar(char start);
+  bool SetEndChar(char end);
+  bool SetErrorCorrectionLevel(int32_t level);
   bool SetCharEncoding(int32_t encoding);
   bool SetModuleHeight(int32_t moduleHeight);
   bool SetModuleWidth(int32_t moduleWidth);
diff --git a/fxbarcode/cbc_pdf417i.cpp b/fxbarcode/cbc_pdf417i.cpp
index b011979..d259516 100644
--- a/fxbarcode/cbc_pdf417i.cpp
+++ b/fxbarcode/cbc_pdf417i.cpp
@@ -31,11 +31,6 @@
 
 CBC_PDF417I::~CBC_PDF417I() {}
 
-bool CBC_PDF417I::SetErrorCorrectionLevel(int32_t level) {
-  GetPDF417Writer()->SetErrorCorrectionLevel(level);
-  return true;
-}
-
 bool CBC_PDF417I::Encode(const WideStringView& contents) {
   int32_t outWidth;
   int32_t outHeight;
diff --git a/fxbarcode/cbc_pdf417i.h b/fxbarcode/cbc_pdf417i.h
index b12fa74..37dd5b4 100644
--- a/fxbarcode/cbc_pdf417i.h
+++ b/fxbarcode/cbc_pdf417i.h
@@ -24,7 +24,6 @@
   bool RenderDevice(CFX_RenderDevice* device,
                     const CFX_Matrix* matrix) override;
   BC_TYPE GetType() override;
-  bool SetErrorCorrectionLevel(int32_t level) override;
 
  private:
   CBC_PDF417Writer* GetPDF417Writer();
diff --git a/fxbarcode/cbc_qrcode.cpp b/fxbarcode/cbc_qrcode.cpp
index 0f3a65e..a5679a0 100644
--- a/fxbarcode/cbc_qrcode.cpp
+++ b/fxbarcode/cbc_qrcode.cpp
@@ -31,12 +31,6 @@
 
 CBC_QRCode::~CBC_QRCode() {}
 
-bool CBC_QRCode::SetErrorCorrectionLevel(int32_t level) {
-  if (level < 0 || level > 3)
-    return false;
-  return GetQRCodeWriter()->SetErrorCorrectionLevel(level);
-}
-
 bool CBC_QRCode::Encode(const WideStringView& contents) {
   int32_t outWidth = 0;
   int32_t outHeight = 0;
diff --git a/fxbarcode/cbc_qrcode.h b/fxbarcode/cbc_qrcode.h
index 8502933..e40fbc8 100644
--- a/fxbarcode/cbc_qrcode.h
+++ b/fxbarcode/cbc_qrcode.h
@@ -24,7 +24,6 @@
   bool RenderDevice(CFX_RenderDevice* device,
                     const CFX_Matrix* matrix) override;
   BC_TYPE GetType() override;
-  bool SetErrorCorrectionLevel(int32_t level) override;
 
  private:
   CBC_QRCodeWriter* GetQRCodeWriter();
diff --git a/fxbarcode/oned/BC_OnedCodaBarWriter.h b/fxbarcode/oned/BC_OnedCodaBarWriter.h
index ff30ab6..8147e04 100644
--- a/fxbarcode/oned/BC_OnedCodaBarWriter.h
+++ b/fxbarcode/oned/BC_OnedCodaBarWriter.h
@@ -31,10 +31,10 @@
   WideString FilterContents(const WideStringView& contents) override;
   void SetDataLength(int32_t length) override;
   bool SetTextLocation(BC_TEXT_LOC location) override;
+  bool SetWideNarrowRatio(int8_t ratio) override;
+  bool SetStartChar(char start) override;
+  bool SetEndChar(char end) override;
 
-  virtual bool SetStartChar(char start);
-  virtual bool SetEndChar(char end);
-  virtual bool SetWideNarrowRatio(int8_t ratio);
   virtual bool FindChar(wchar_t ch, bool isContent);
 
   WideString encodedContents(const WideStringView& contents);
diff --git a/fxbarcode/oned/BC_OnedCode39Writer.h b/fxbarcode/oned/BC_OnedCode39Writer.h
index e136073..b6102bc 100644
--- a/fxbarcode/oned/BC_OnedCode39Writer.h
+++ b/fxbarcode/oned/BC_OnedCode39Writer.h
@@ -29,8 +29,7 @@
   WideString FilterContents(const WideStringView& contents) override;
   WideString RenderTextContents(const WideStringView& contents) override;
   bool SetTextLocation(BC_TEXT_LOC location) override;
-
-  virtual bool SetWideNarrowRatio(int8_t ratio);
+  bool SetWideNarrowRatio(int8_t ratio) override;
 
   bool encodedContents(const WideStringView& contents, WideString* result);