diff --git a/xfa/fwl/core/ifwl_barcode.cpp b/xfa/fwl/core/ifwl_barcode.cpp
index c918b3b..d055a4b 100644
--- a/xfa/fwl/core/ifwl_barcode.cpp
+++ b/xfa/fwl/core/ifwl_barcode.cpp
@@ -26,9 +26,9 @@
 }
 
 void IFWL_Barcode::Update() {
-  if (IsLocked()) {
+  if (IsLocked())
     return;
-  }
+
   IFWL_Edit::Update();
   GenerateBarcodeImageCache();
 }
@@ -41,15 +41,15 @@
     return;
   if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0) {
     GenerateBarcodeImageCache();
-    if (!m_pBarcodeEngine || (m_dwStatus & XFA_BCS_EncodeSuccess) == 0) {
+    if (!m_pBarcodeEngine || (m_dwStatus & XFA_BCS_EncodeSuccess) == 0)
       return;
-    }
+
     CFX_Matrix mt;
     mt.e = GetRTClient().left;
     mt.f = GetRTClient().top;
-    if (pMatrix) {
+    if (pMatrix)
       mt.Concat(*pMatrix);
-    }
+
     int32_t errorCode = 0;
     m_pBarcodeEngine->RenderDevice(pGraphics->GetRenderDevice(), pMatrix,
                                    errorCode);
@@ -57,9 +57,11 @@
   }
   IFWL_Edit::DrawWidget(pGraphics, pMatrix);
 }
+
 void IFWL_Barcode::GenerateBarcodeImageCache() {
   if ((m_dwStatus & XFA_BCS_NeedUpdate) == 0)
     return;
+
   m_dwStatus = 0;
   CreateBarcodeEngine();
   IFWL_BarcodeDP* pData =
@@ -68,70 +70,60 @@
     return;
   if (!m_pBarcodeEngine)
     return;
+
   CFX_WideString wsText;
   GetText(wsText);
 
   CFWL_ThemePart part;
   part.m_pWidget = this;
+
   IFWL_ThemeProvider* pTheme = GetAvailableTheme();
   CFGAS_GEFont* pFont = static_cast<CFGAS_GEFont*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::Font));
   CFX_Font* pCXFont = pFont ? pFont->GetDevFont() : nullptr;
-  if (pCXFont) {
+  if (pCXFont)
     m_pBarcodeEngine->SetFont(pCXFont);
-  }
+
   FX_FLOAT* pFontSize = static_cast<FX_FLOAT*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::FontSize));
-  if (pFontSize) {
+  if (pFontSize)
     m_pBarcodeEngine->SetFontSize(*pFontSize);
-  }
+
   FX_ARGB* pFontColor = static_cast<FX_ARGB*>(
       pTheme->GetCapacity(&part, CFWL_WidgetCapacity::TextColor));
-  if (pFontColor) {
+  if (pFontColor)
     m_pBarcodeEngine->SetFontColor(*pFontColor);
-  }
+
   m_pBarcodeEngine->SetHeight(int32_t(GetRTClient().height));
   m_pBarcodeEngine->SetWidth(int32_t(GetRTClient().width));
   uint32_t dwAttributeMask = pData->GetBarcodeAttributeMask();
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_CHARENCODING) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_CHARENCODING)
     m_pBarcodeEngine->SetCharEncoding(pData->GetCharEncoding());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_MODULEHEIGHT) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_MODULEHEIGHT)
     m_pBarcodeEngine->SetModuleHeight(pData->GetModuleHeight());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_MODULEWIDTH) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_MODULEWIDTH)
     m_pBarcodeEngine->SetModuleWidth(pData->GetModuleWidth());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_DATALENGTH) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_DATALENGTH)
     m_pBarcodeEngine->SetDataLength(pData->GetDataLength());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_CALCHECKSUM) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_CALCHECKSUM)
     m_pBarcodeEngine->SetCalChecksum(pData->GetCalChecksum());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_PRINTCHECKSUM) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_PRINTCHECKSUM)
     m_pBarcodeEngine->SetPrintChecksum(pData->GetPrintChecksum());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_TEXTLOCATION) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_TEXTLOCATION)
     m_pBarcodeEngine->SetTextLocation(pData->GetTextLocation());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_WIDENARROWRATIO) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_WIDENARROWRATIO)
     m_pBarcodeEngine->SetWideNarrowRatio(pData->GetWideNarrowRatio());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_STARTCHAR) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_STARTCHAR)
     m_pBarcodeEngine->SetStartChar(pData->GetStartChar());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_ENDCHAR) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_ENDCHAR)
     m_pBarcodeEngine->SetEndChar(pData->GetEndChar());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_VERSION) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_VERSION)
     m_pBarcodeEngine->SetVersion(pData->GetVersion());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_ECLEVEL) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_ECLEVEL)
     m_pBarcodeEngine->SetErrorCorrectionLevel(pData->GetErrorCorrectionLevel());
-  }
-  if (dwAttributeMask & FWL_BCDATTRIBUTE_TRUNCATED) {
+  if (dwAttributeMask & FWL_BCDATTRIBUTE_TRUNCATED)
     m_pBarcodeEngine->SetTruncated(pData->GetTruncated());
-  }
+
   int32_t errorCode = 0;
   m_dwStatus = m_pBarcodeEngine->Encode(wsText.AsStringC(), true, errorCode)
                    ? XFA_BCS_EncodeSuccess
@@ -155,15 +147,17 @@
   m_type = type;
   m_dwStatus = XFA_BCS_NeedUpdate;
 }
+
 void IFWL_Barcode::SetText(const CFX_WideString& wsText) {
   m_pBarcodeEngine.reset();
   m_dwStatus = XFA_BCS_NeedUpdate;
   IFWL_Edit::SetText(wsText);
 }
-bool IFWL_Barcode::IsProtectedType() {
-  if (!m_pBarcodeEngine) {
+
+bool IFWL_Barcode::IsProtectedType() const {
+  if (!m_pBarcodeEngine)
     return true;
-  }
+
   BC_TYPE tEngineType = m_pBarcodeEngine->GetType();
   if (tEngineType == BC_QR_CODE || tEngineType == BC_PDF417 ||
       tEngineType == BC_DATAMATRIX) {
diff --git a/xfa/fwl/core/ifwl_barcode.h b/xfa/fwl/core/ifwl_barcode.h
index d69cd23..09ec1f3 100644
--- a/xfa/fwl/core/ifwl_barcode.h
+++ b/xfa/fwl/core/ifwl_barcode.h
@@ -73,7 +73,7 @@
   void SetText(const CFX_WideString& wsText) override;
 
   void SetType(BC_TYPE type);
-  bool IsProtectedType();
+  bool IsProtectedType() const;
 
  private:
   void GenerateBarcodeImageCache();
diff --git a/xfa/fwl/core/ifwl_caret.cpp b/xfa/fwl/core/ifwl_caret.cpp
index f333fdd..0b84cdf 100644
--- a/xfa/fwl/core/ifwl_caret.cpp
+++ b/xfa/fwl/core/ifwl_caret.cpp
@@ -65,21 +65,21 @@
 void IFWL_Caret::DrawCaretBK(CFX_Graphics* pGraphics,
                              IFWL_ThemeProvider* pTheme,
                              const CFX_Matrix* pMatrix) {
+  if (!(m_pProperties->m_dwStates & FWL_STATE_CAT_HightLight))
+    return;
+
   CFX_RectF rect;
   GetWidgetRect(rect);
   rect.Set(0, 0, rect.width, rect.height);
+
   CFWL_ThemeBackground param;
   param.m_pWidget = this;
   param.m_pGraphics = pGraphics;
   param.m_rtPart = rect;
-  if (!(m_pProperties->m_dwStates & FWL_STATE_CAT_HightLight))
-    return;
-
   param.m_iPart = CFWL_Part::Background;
   param.m_dwStates = CFWL_PartState_HightLight;
   if (pMatrix)
     param.m_matrix.Concat(*pMatrix);
-
   pTheme->DrawBackground(&param);
 }
 
@@ -94,8 +94,8 @@
 
 void IFWL_Caret::Timer::Run(IFWL_TimerInfo* pTimerInfo) {
   IFWL_Caret* pCaret = static_cast<IFWL_Caret*>(m_pWidget);
-  bool toggle = !(pCaret->GetStates() & FWL_STATE_CAT_HightLight);
-  pCaret->SetStates(FWL_STATE_CAT_HightLight, toggle);
+  pCaret->SetStates(FWL_STATE_CAT_HightLight,
+                    !(pCaret->GetStates() & FWL_STATE_CAT_HightLight));
 
   CFX_RectF rt;
   pCaret->GetWidgetRect(rt);
diff --git a/xfa/fwl/core/ifwl_checkbox.cpp b/xfa/fwl/core/ifwl_checkbox.cpp
index e309a35..6c54801 100644
--- a/xfa/fwl/core/ifwl_checkbox.cpp
+++ b/xfa/fwl/core/ifwl_checkbox.cpp
@@ -44,43 +44,43 @@
 }
 
 void IFWL_CheckBox::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
-  if (bAutoSize) {
-    rect.Set(0, 0, 0, 0);
-    if (!m_pProperties->m_pThemeProvider)
-      m_pProperties->m_pThemeProvider = GetAvailableTheme();
-    if (!m_pProperties->m_pThemeProvider)
-      return;
-    if (!m_pProperties->m_pDataProvider)
-      return;
-    CFX_WideString wsCaption;
-    m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-    if (wsCaption.GetLength() > 0) {
-      CFX_SizeF sz = CalcTextSize(
-          wsCaption, m_pProperties->m_pThemeProvider,
-          !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine));
-      rect.Set(0, 0, sz.x, sz.y);
-    }
-    rect.Inflate(kCaptionMargin, kCaptionMargin);
-    IFWL_CheckBoxDP* pData =
-        static_cast<IFWL_CheckBoxDP*>(m_pProperties->m_pDataProvider);
-    FX_FLOAT fCheckBox = pData->GetBoxSize(this);
-    rect.width += fCheckBox;
-    if (rect.height < fCheckBox) {
-      rect.height = fCheckBox;
-    }
-    IFWL_Widget::GetWidgetRect(rect, true);
-  } else {
+  if (!bAutoSize) {
     rect = m_pProperties->m_rtWidget;
+    return;
   }
+
+  rect.Set(0, 0, 0, 0);
+  if (!m_pProperties->m_pThemeProvider)
+    m_pProperties->m_pThemeProvider = GetAvailableTheme();
+  if (!m_pProperties->m_pThemeProvider)
+    return;
+  if (!m_pProperties->m_pDataProvider)
+    return;
+
+  CFX_WideString wsCaption;
+  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
+  if (wsCaption.GetLength() > 0) {
+    CFX_SizeF sz = CalcTextSize(
+        wsCaption, m_pProperties->m_pThemeProvider,
+        !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine));
+    rect.Set(0, 0, sz.x, sz.y);
+  }
+  rect.Inflate(kCaptionMargin, kCaptionMargin);
+
+  IFWL_CheckBoxDP* pData =
+      static_cast<IFWL_CheckBoxDP*>(m_pProperties->m_pDataProvider);
+  FX_FLOAT fCheckBox = pData->GetBoxSize(this);
+  rect.width += fCheckBox;
+  rect.height = std::max(rect.height, fCheckBox);
+  IFWL_Widget::GetWidgetRect(rect, true);
 }
 
 void IFWL_CheckBox::Update() {
-  if (IsLocked()) {
+  if (IsLocked())
     return;
-  }
-  if (!m_pProperties->m_pThemeProvider) {
+  if (!m_pProperties->m_pThemeProvider)
     m_pProperties->m_pThemeProvider = GetAvailableTheme();
-  }
+
   UpdateTextOutStyles();
   Layout();
 }
@@ -91,56 +91,53 @@
     return;
   if (!m_pProperties->m_pThemeProvider)
     return;
+
   IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
   if (HasBorder()) {
     DrawBorder(pGraphics, CFWL_Part::Border, m_pProperties->m_pThemeProvider,
                pMatrix);
   }
-  if (HasEdge()) {
+  if (HasEdge())
     DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix);
-  }
+
   int32_t dwStates = GetPartStates();
-  {
-    CFWL_ThemeBackground param;
-    param.m_pWidget = this;
-    param.m_iPart = CFWL_Part::Background;
-    param.m_dwStates = dwStates;
-    param.m_pGraphics = pGraphics;
-    if (pMatrix) {
-      param.m_matrix.Concat(*pMatrix);
-    }
-    param.m_rtPart = m_rtClient;
-    if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) {
-      param.m_pData = &m_rtFocus;
-    }
-    pTheme->DrawBackground(&param);
-    param.m_iPart = CFWL_Part::CheckBox;
-    param.m_rtPart = m_rtBox;
-    pTheme->DrawBackground(&param);
-  }
+
+  CFWL_ThemeBackground param;
+  param.m_pWidget = this;
+  param.m_iPart = CFWL_Part::Background;
+  param.m_dwStates = dwStates;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix)
+    param.m_matrix.Concat(*pMatrix);
+  param.m_rtPart = m_rtClient;
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
+    param.m_pData = &m_rtFocus;
+  pTheme->DrawBackground(&param);
+
+  param.m_iPart = CFWL_Part::CheckBox;
+  param.m_rtPart = m_rtBox;
+  pTheme->DrawBackground(&param);
+
   if (!m_pProperties->m_pDataProvider)
     return;
 
-  {
-    CFX_WideString wsCaption;
-    m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-    int32_t iLen = wsCaption.GetLength();
-    if (iLen <= 0)
-      return;
-    CFWL_ThemeText textParam;
-    textParam.m_pWidget = this;
-    textParam.m_iPart = CFWL_Part::Caption;
-    textParam.m_dwStates = dwStates;
-    textParam.m_pGraphics = pGraphics;
-    if (pMatrix) {
-      textParam.m_matrix.Concat(*pMatrix);
-    }
-    textParam.m_rtPart = m_rtCaption;
-    textParam.m_wsText = wsCaption;
-    textParam.m_dwTTOStyles = m_dwTTOStyles;
-    textParam.m_iTTOAlign = m_iTTOAlign;
-    pTheme->DrawText(&textParam);
-  }
+  CFX_WideString wsCaption;
+  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
+  if (wsCaption.GetLength() <= 0)
+    return;
+
+  CFWL_ThemeText textParam;
+  textParam.m_pWidget = this;
+  textParam.m_iPart = CFWL_Part::Caption;
+  textParam.m_dwStates = dwStates;
+  textParam.m_pGraphics = pGraphics;
+  if (pMatrix)
+    textParam.m_matrix.Concat(*pMatrix);
+  textParam.m_rtPart = m_rtCaption;
+  textParam.m_wsText = wsCaption;
+  textParam.m_dwTTOStyles = m_dwTTOStyles;
+  textParam.m_iTTOAlign = m_iTTOAlign;
+  pTheme->DrawText(&textParam);
 }
 
 void IFWL_CheckBox::SetCheckState(int32_t iCheck) {
@@ -160,26 +157,24 @@
 }
 
 void IFWL_CheckBox::Layout() {
-  int32_t width = int32_t(m_pProperties->m_rtWidget.width + 0.5f);
-  int32_t height = int32_t(m_pProperties->m_rtWidget.height + 0.5f);
-  m_pProperties->m_rtWidget.width = (FX_FLOAT)width;
-  m_pProperties->m_rtWidget.height = (FX_FLOAT)height;
+  m_pProperties->m_rtWidget.width =
+      FXSYS_round(m_pProperties->m_rtWidget.width);
+  m_pProperties->m_rtWidget.height =
+      FXSYS_round(m_pProperties->m_rtWidget.height);
   GetClientRect(m_rtClient);
-  FX_FLOAT fBoxTop = m_rtClient.top;
-  FX_FLOAT fBoxLeft = m_rtClient.left;
-  FX_FLOAT fTextLeft = 0.0, fTextRight = 0.0;
-  FX_FLOAT fClientRight = m_rtClient.right();
-  FX_FLOAT fClientBottom = m_rtClient.bottom();
+
   if (!m_pProperties->m_pDataProvider)
     return;
+
+  FX_FLOAT fBoxTop = m_rtClient.top;
+  FX_FLOAT fClientBottom = m_rtClient.bottom();
+
   IFWL_CheckBoxDP* pData =
       static_cast<IFWL_CheckBoxDP*>(m_pProperties->m_pDataProvider);
   FX_FLOAT fCheckBox = pData->GetBoxSize(this);
   switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) {
-    case FWL_STYLEEXT_CKB_Top: {
-      fBoxTop = m_rtClient.top;
+    case FWL_STYLEEXT_CKB_Top:
       break;
-    }
     case FWL_STYLEEXT_CKB_Bottom: {
       fBoxTop = fClientBottom - fCheckBox;
       break;
@@ -188,8 +183,14 @@
     default: {
       fBoxTop = m_rtClient.top + (m_rtClient.height - fCheckBox) / 2;
       fBoxTop = FXSYS_floor(fBoxTop);
+      break;
     }
   }
+
+  FX_FLOAT fBoxLeft = m_rtClient.left;
+  FX_FLOAT fTextLeft = 0.0;
+  FX_FLOAT fTextRight = 0.0;
+  FX_FLOAT fClientRight = m_rtClient.right();
   if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_LeftText) {
     fBoxLeft = fClientRight - fCheckBox;
     fTextLeft = m_rtClient.left;
@@ -202,44 +203,47 @@
   m_rtCaption.Set(fTextLeft, m_rtClient.top, fTextRight - fTextLeft,
                   m_rtClient.height);
   m_rtCaption.Inflate(-kCaptionMargin, -kCaptionMargin);
+
   CFX_RectF rtFocus;
   rtFocus.Set(m_rtCaption.left, m_rtCaption.top, m_rtCaption.width,
               m_rtCaption.height);
+
   CFX_WideString wsCaption;
   m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
   if (wsCaption.IsEmpty()) {
     m_rtFocus.Set(0, 0, 0, 0);
-  } else {
-    CalcTextRect(wsCaption, m_pProperties->m_pThemeProvider, m_dwTTOStyles,
-                 m_iTTOAlign, rtFocus);
-    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine) == 0) {
-      FX_FLOAT fWidth = std::max(m_rtCaption.width, rtFocus.width);
-      FX_FLOAT fHeight = std::min(m_rtCaption.height, rtFocus.height);
-      FX_FLOAT fLeft = m_rtCaption.left;
-      FX_FLOAT fTop = m_rtCaption.top;
-      if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_HLayoutMask) ==
-          FWL_STYLEEXT_CKB_Center) {
-        fLeft = m_rtCaption.left + (m_rtCaption.width - fWidth) / 2;
-      } else if ((m_pProperties->m_dwStyleExes &
-                  FWL_STYLEEXT_CKB_HLayoutMask) == FWL_STYLEEXT_CKB_Right) {
-        fLeft = m_rtCaption.right() - fWidth;
-      }
-      if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) ==
-          FWL_STYLEEXT_CKB_VCenter) {
-        fTop = m_rtCaption.top + (m_rtCaption.height - fHeight) / 2;
-      } else if ((m_pProperties->m_dwStyleExes &
-                  FWL_STYLEEXT_CKB_VLayoutMask) == FWL_STYLEEXT_CKB_Bottom) {
-        fTop = m_rtCaption.bottom() - fHeight;
-      }
-      m_rtFocus.Set(fLeft, fTop, fWidth, fHeight);
-    } else {
-      m_rtFocus.Set(rtFocus.left, rtFocus.top, rtFocus.width, rtFocus.height);
-    }
-    m_rtFocus.Inflate(1, 1);
+    return;
   }
+
+  CalcTextRect(wsCaption, m_pProperties->m_pThemeProvider, m_dwTTOStyles,
+               m_iTTOAlign, rtFocus);
+  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine) == 0) {
+    FX_FLOAT fWidth = std::max(m_rtCaption.width, rtFocus.width);
+    FX_FLOAT fHeight = std::min(m_rtCaption.height, rtFocus.height);
+    FX_FLOAT fLeft = m_rtCaption.left;
+    FX_FLOAT fTop = m_rtCaption.top;
+    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_HLayoutMask) ==
+        FWL_STYLEEXT_CKB_Center) {
+      fLeft = m_rtCaption.left + (m_rtCaption.width - fWidth) / 2;
+    } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_HLayoutMask) ==
+               FWL_STYLEEXT_CKB_Right) {
+      fLeft = m_rtCaption.right() - fWidth;
+    }
+    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) ==
+        FWL_STYLEEXT_CKB_VCenter) {
+      fTop = m_rtCaption.top + (m_rtCaption.height - fHeight) / 2;
+    } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_VLayoutMask) ==
+               FWL_STYLEEXT_CKB_Bottom) {
+      fTop = m_rtCaption.bottom() - fHeight;
+    }
+    m_rtFocus.Set(fLeft, fTop, fWidth, fHeight);
+  } else {
+    m_rtFocus.Set(rtFocus.left, rtFocus.top, rtFocus.width, rtFocus.height);
+  }
+  m_rtFocus.Inflate(1, 1);
 }
 
-uint32_t IFWL_CheckBox::GetPartStates() {
+uint32_t IFWL_CheckBox::GetPartStates() const {
   int32_t dwStates = CFWL_PartState_Normal;
   if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
       FWL_STATE_CKB_Neutral) {
@@ -248,23 +252,20 @@
              FWL_STATE_CKB_Checked) {
     dwStates = CFWL_PartState_Checked;
   }
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) {
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
     dwStates |= CFWL_PartState_Disabled;
-  } else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered) {
+  else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered)
     dwStates |= CFWL_PartState_Hovered;
-  } else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed) {
+  else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed)
     dwStates |= CFWL_PartState_Pressed;
-  } else {
+  else
     dwStates |= CFWL_PartState_Normal;
-  }
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) {
+  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
     dwStates |= CFWL_PartState_Focused;
-  }
   return dwStates;
 }
 
 void IFWL_CheckBox::UpdateTextOutStyles() {
-  m_iTTOAlign = FDE_TTOALIGNMENT_Center;
   switch (m_pProperties->m_dwStyleExes &
           (FWL_STYLEEXT_CKB_HLayoutMask | FWL_STYLEEXT_CKB_VLayoutMask)) {
     case FWL_STYLEEXT_CKB_Left | FWL_STYLEEXT_CKB_Top: {
@@ -283,10 +284,6 @@
       m_iTTOAlign = FDE_TTOALIGNMENT_CenterLeft;
       break;
     }
-    case FWL_STYLEEXT_CKB_Center | FWL_STYLEEXT_CKB_VCenter: {
-      m_iTTOAlign = FDE_TTOALIGNMENT_Center;
-      break;
-    }
     case FWL_STYLEEXT_CKB_Right | FWL_STYLEEXT_CKB_VCenter: {
       m_iTTOAlign = FDE_TTOALIGNMENT_CenterRight;
       break;
@@ -303,17 +300,19 @@
       m_iTTOAlign = FDE_TTOALIGNMENT_BottomRight;
       break;
     }
-    default: {}
+    case FWL_STYLEEXT_CKB_Center | FWL_STYLEEXT_CKB_VCenter:
+    default: {
+      m_iTTOAlign = FDE_TTOALIGNMENT_Center;
+      break;
+    }
   }
   m_dwTTOStyles = 0;
-  if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading) {
+  if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading)
     m_dwTTOStyles |= FDE_TTOSTYLE_RTL;
-  }
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine) {
+  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine)
     m_dwTTOStyles |= FDE_TTOSTYLE_LineWrap;
-  } else {
+  else
     m_dwTTOStyles |= FDE_TTOSTYLE_SingleLine;
-  }
 }
 
 void IFWL_CheckBox::NextStates() {
@@ -346,23 +345,21 @@
     if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
         FWL_STATE_CKB_Neutral) {
       m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
-      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State) {
+      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
         m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
-      }
     } else if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
                FWL_STATE_CKB_Checked) {
       m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
     } else {
-      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State) {
+      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
         m_pProperties->m_dwStates |= FWL_STATE_CKB_Neutral;
-      } else {
+      else
         m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
-      }
     }
   }
+
   Repaint(&m_rtClient);
-  uint32_t dwLaststate = m_pProperties->m_dwStates;
-  if (dwFirststate != dwLaststate) {
+  if (dwFirststate != m_pProperties->m_dwStates) {
     CFWL_EvtCkbCheckStateChanged wmCheckBoxState;
     wmCheckBoxState.m_pSrcTarget = this;
     DispatchEvent(&wmCheckBoxState);
@@ -375,16 +372,16 @@
 
   switch (pMessage->GetClassID()) {
     case CFWL_MessageType::SetFocus:
-      OnFocusChanged(pMessage, true);
+      OnFocusChanged(true);
       break;
     case CFWL_MessageType::KillFocus:
-      OnFocusChanged(pMessage, false);
+      OnFocusChanged(false);
       break;
     case CFWL_MessageType::Mouse: {
       CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
       switch (pMsg->m_dwCmd) {
         case FWL_MouseCommand::LeftButtonDown:
-          OnLButtonDown(pMsg);
+          OnLButtonDown();
           break;
         case FWL_MouseCommand::LeftButtonUp:
           OnLButtonUp(pMsg);
@@ -393,7 +390,7 @@
           OnMouseMove(pMsg);
           break;
         case FWL_MouseCommand::Leave:
-          OnMouseLeave(pMsg);
+          OnMouseLeave();
           break;
         default:
           break;
@@ -418,16 +415,16 @@
   DrawWidget(pGraphics, pMatrix);
 }
 
-void IFWL_CheckBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) {
+void IFWL_CheckBox::OnFocusChanged(bool bSet) {
   if (bSet)
     m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
   else
     m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
 
-  Repaint(&(m_rtClient));
+  Repaint(&m_rtClient);
 }
 
-void IFWL_CheckBox::OnLButtonDown(CFWL_MsgMouse* pMsg) {
+void IFWL_CheckBox::OnLButtonDown() {
   if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
     return;
   if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)
@@ -436,7 +433,7 @@
   m_bBtnDown = true;
   m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
   m_pProperties->m_dwStates |= FWL_STATE_CKB_Pressed;
-  Repaint(&(m_rtClient));
+  Repaint(&m_rtClient);
 }
 
 void IFWL_CheckBox::OnLButtonUp(CFWL_MsgMouse* pMsg) {
@@ -485,18 +482,17 @@
       }
     }
   }
-  if (bRepaint) {
-    Repaint(&(m_rtBox));
-  }
+  if (bRepaint)
+    Repaint(&m_rtBox);
 }
 
-void IFWL_CheckBox::OnMouseLeave(CFWL_MsgMouse* pMsg) {
+void IFWL_CheckBox::OnMouseLeave() {
   if (m_bBtnDown)
     m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
   else
     m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
 
-  Repaint(&(m_rtBox));
+  Repaint(&m_rtBox);
 }
 
 void IFWL_CheckBox::OnKeyDown(CFWL_MsgKey* pMsg) {
diff --git a/xfa/fwl/core/ifwl_checkbox.h b/xfa/fwl/core/ifwl_checkbox.h
index 06e8f70..0b38e77 100644
--- a/xfa/fwl/core/ifwl_checkbox.h
+++ b/xfa/fwl/core/ifwl_checkbox.h
@@ -74,14 +74,14 @@
  private:
   void SetCheckState(int32_t iCheck);
   void Layout();
-  uint32_t GetPartStates();
+  uint32_t GetPartStates() const;
   void UpdateTextOutStyles();
   void NextStates();
-  void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
-  void OnLButtonDown(CFWL_MsgMouse* pMsg);
+  void OnFocusChanged(bool bSet);
+  void OnLButtonDown();
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
-  void OnMouseLeave(CFWL_MsgMouse* pMsg);
+  void OnMouseLeave();
   void OnKeyDown(CFWL_MsgKey* pMsg);
 
   CFX_RectF m_rtClient;