diff --git a/fxbarcode/BC_TwoDimWriter.cpp b/fxbarcode/BC_TwoDimWriter.cpp
index 236ddf3..09ae8c7 100644
--- a/fxbarcode/BC_TwoDimWriter.cpp
+++ b/fxbarcode/BC_TwoDimWriter.cpp
@@ -4,12 +4,13 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "fxbarcode/BC_TwoDimWriter.h"
+
 #include <algorithm>
 
 #include "core/fxge/cfx_graphstatedata.h"
 #include "core/fxge/cfx_pathdata.h"
 #include "core/fxge/cfx_renderdevice.h"
-#include "fxbarcode/BC_TwoDimWriter.h"
 #include "fxbarcode/BC_Writer.h"
 #include "fxbarcode/common/BC_CommonBitMatrix.h"
 #include "third_party/base/numerics/safe_math.h"
@@ -20,9 +21,12 @@
 
 CBC_TwoDimWriter::~CBC_TwoDimWriter() = default;
 
-bool CBC_TwoDimWriter::RenderResult(uint8_t* code,
+bool CBC_TwoDimWriter::RenderResult(const std::vector<uint8_t>& code,
                                     int32_t codeWidth,
                                     int32_t codeHeight) {
+  if (code.empty())
+    return false;
+
   m_inputWidth = codeWidth;
   m_inputHeight = codeHeight;
   int32_t tempWidth = m_inputWidth + 2;
diff --git a/fxbarcode/BC_TwoDimWriter.h b/fxbarcode/BC_TwoDimWriter.h
index a56c9ed..91f5ac7 100644
--- a/fxbarcode/BC_TwoDimWriter.h
+++ b/fxbarcode/BC_TwoDimWriter.h
@@ -8,6 +8,7 @@
 #define FXBARCODE_BC_TWODIMWRITER_H_
 
 #include <memory>
+#include <vector>
 
 #include "core/fxcrt/fx_coordinates.h"
 #include "fxbarcode/BC_Writer.h"
@@ -20,11 +21,10 @@
   explicit CBC_TwoDimWriter(bool bFixedSize);
   ~CBC_TwoDimWriter() override;
 
-  virtual bool RenderResult(uint8_t* code,
-                            int32_t codeWidth,
-                            int32_t codeHeight);
-  virtual void RenderDeviceResult(CFX_RenderDevice* device,
-                                  const CFX_Matrix* matrix);
+  bool RenderResult(const std::vector<uint8_t>& code,
+                    int32_t codeWidth,
+                    int32_t codeHeight);
+  void RenderDeviceResult(CFX_RenderDevice* device, const CFX_Matrix* matrix);
 
   int32_t error_correction_level() const { return m_iCorrectionLevel; }
 
diff --git a/fxbarcode/cbc_datamatrix.cpp b/fxbarcode/cbc_datamatrix.cpp
index 6557550..bebff2d 100644
--- a/fxbarcode/cbc_datamatrix.cpp
+++ b/fxbarcode/cbc_datamatrix.cpp
@@ -37,7 +37,7 @@
   auto* pWriter = GetDataMatrixWriter();
   std::vector<uint8_t> data =
       pWriter->Encode(WideString(contents), &width, &height);
-  return !data.empty() && pWriter->RenderResult(data.data(), width, height);
+  return pWriter->RenderResult(data, width, height);
 }
 
 bool CBC_DataMatrix::RenderDevice(CFX_RenderDevice* device,
diff --git a/fxbarcode/cbc_pdf417i.cpp b/fxbarcode/cbc_pdf417i.cpp
index 72a30d6..321468b 100644
--- a/fxbarcode/cbc_pdf417i.cpp
+++ b/fxbarcode/cbc_pdf417i.cpp
@@ -36,7 +36,7 @@
   int32_t height;
   auto* pWriter = GetPDF417Writer();
   std::vector<uint8_t> data = pWriter->Encode(contents, &width, &height);
-  return !data.empty() && pWriter->RenderResult(data.data(), width, height);
+  return pWriter->RenderResult(data, width, height);
 }
 
 bool CBC_PDF417I::RenderDevice(CFX_RenderDevice* device,
diff --git a/fxbarcode/cbc_qrcode.cpp b/fxbarcode/cbc_qrcode.cpp
index f038f9e..c89387b 100644
--- a/fxbarcode/cbc_qrcode.cpp
+++ b/fxbarcode/cbc_qrcode.cpp
@@ -37,7 +37,7 @@
   CBC_QRCodeWriter* pWriter = GetQRCodeWriter();
   std::vector<uint8_t> data = pWriter->Encode(
       contents, pWriter->error_correction_level(), &width, &height);
-  return !data.empty() && pWriter->RenderResult(data.data(), width, height);
+  return pWriter->RenderResult(data, width, height);
 }
 
 bool CBC_QRCode::RenderDevice(CFX_RenderDevice* device,