diff --git a/fxbarcode/pdf417/BC_PDF417.cpp b/fxbarcode/pdf417/BC_PDF417.cpp
index 0048175..3b528ac 100644
--- a/fxbarcode/pdf417/BC_PDF417.cpp
+++ b/fxbarcode/pdf417/BC_PDF417.cpp
@@ -432,19 +432,19 @@
                             CBC_BarcodeRow* logic) {
   int32_t map = 1 << (len - 1);
   bool last = ((pattern & map) != 0);
-  int32_t width = 0;
+  size_t width = 0;
   for (int32_t i = 0; i < len; i++) {
     bool black = ((pattern & map) != 0);
     if (last == black) {
       width++;
     } else {
-      logic->addBar(last, width);
+      logic->AddBar(last, width);
       last = black;
       width = 1;
     }
     map >>= 1;
   }
-  logic->addBar(last, width);
+  logic->AddBar(last, width);
 }
 
 void CBC_PDF417::encodeLowLevel(WideString fullCodewords,
diff --git a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
index 3e712ae..7a48353 100644
--- a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
+++ b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
@@ -36,7 +36,7 @@
 CBC_BarcodeMatrix::toBitArray() {
   std::vector<uint8_t, FxAllocAllocator<uint8_t>> bitArray(m_width * m_height);
   for (size_t i = 0; i < m_height; ++i) {
-    const auto& bytearray = m_matrix[i]->getRow();
+    const auto& bytearray = m_matrix[i]->GetRow();
     for (size_t j = 0; j < m_width; ++j)
       bitArray[i * m_width + j] = bytearray[j];
   }
diff --git a/fxbarcode/pdf417/BC_PDF417BarcodeRow.cpp b/fxbarcode/pdf417/BC_PDF417BarcodeRow.cpp
index 1202d17..4a1f6dd 100644
--- a/fxbarcode/pdf417/BC_PDF417BarcodeRow.cpp
+++ b/fxbarcode/pdf417/BC_PDF417BarcodeRow.cpp
@@ -24,12 +24,11 @@
 
 #include <algorithm>
 
-CBC_BarcodeRow::CBC_BarcodeRow(size_t width)
-    : m_row(width), m_currentLocation(0) {}
+CBC_BarcodeRow::CBC_BarcodeRow(size_t width) : row_(width) {}
 
 CBC_BarcodeRow::~CBC_BarcodeRow() = default;
 
-void CBC_BarcodeRow::addBar(bool black, int32_t width) {
-  std::fill_n(m_row.begin() + m_currentLocation, width, black ? 1 : 0);
-  m_currentLocation += width;
+void CBC_BarcodeRow::AddBar(bool black, size_t width) {
+  std::fill_n(row_.begin() + offset_, width, black ? 1 : 0);
+  offset_ += width;
 }
diff --git a/fxbarcode/pdf417/BC_PDF417BarcodeRow.h b/fxbarcode/pdf417/BC_PDF417BarcodeRow.h
index e3bdb44..280a79c 100644
--- a/fxbarcode/pdf417/BC_PDF417BarcodeRow.h
+++ b/fxbarcode/pdf417/BC_PDF417BarcodeRow.h
@@ -18,14 +18,14 @@
   explicit CBC_BarcodeRow(size_t width);
   ~CBC_BarcodeRow();
 
-  void addBar(bool black, int32_t width);
-  const std::vector<uint8_t, FxAllocAllocator<uint8_t>>& getRow() const {
-    return m_row;
+  void AddBar(bool black, size_t width);
+  const std::vector<uint8_t, FxAllocAllocator<uint8_t>>& GetRow() const {
+    return row_;
   }
 
  private:
-  std::vector<uint8_t, FxAllocAllocator<uint8_t>> m_row;
-  int32_t m_currentLocation;
+  std::vector<uint8_t, FxAllocAllocator<uint8_t>> row_;
+  size_t offset_ = 0;
 };
 
 #endif  // FXBARCODE_PDF417_BC_PDF417BARCODEROW_H_