Remove NULL in xfa/

xfa/fwl/basewidget/fwl_comboboximp.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_BASEWIDGET_FWL_COMBOBOXIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_COMBOBOXIMP_H_
 
 #include <memory>
@@ skipping 152 matching lines @@
   FWL_Error DisForm_Initialize();
   void DisForm_InitComboList();
   void DisForm_InitComboEdit();
   void DisForm_ShowDropList(FX_BOOL bActivate);
   FX_BOOL DisForm_IsDropListShowed();
   FWL_Error DisForm_ModifyStylesEx(uint32_t dwStylesExAdded,
                                    uint32_t dwStylesExRemoved);
   FWL_Error DisForm_Update();
   FWL_WidgetHit DisForm_HitTest(FX_FLOAT fx, FX_FLOAT fy);
   FWL_Error DisForm_DrawWidget(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix = NULL);
+                               const CFX_Matrix* pMatrix = nullptr);
   FWL_Error DisForm_GetBBox(CFX_RectF& rect);
   void DisForm_Layout();
 
   CFX_RectF m_rtClient;
   CFX_RectF m_rtContent;
   CFX_RectF m_rtBtn;
   CFX_RectF m_rtList;
   CFX_RectF m_rtProxy;
   CFX_RectF m_rtHandler;
   std::unique_ptr<IFWL_Edit> m_pEdit;
   std::unique_ptr<IFWL_ListBox> m_pListBox;
   IFWL_Form* m_pForm;
   FX_BOOL m_bLButtonDown;
   FX_BOOL m_bUpFormHandler;
   int32_t m_iCurSel;
   int32_t m_iBtnState;
   FX_FLOAT m_fComboFormHandler;
   FX_FLOAT m_fItemHeight;
   FX_BOOL m_bNeedShowList;
   CFWL_FormProxyImp* m_pProxy;
   CFWL_ComboProxyImpDelegate* m_pListProxyDelegate;
 };
 class CFWL_ComboBoxImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_ComboBoxImpDelegate(CFWL_ComboBoxImp* pOwner);
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnProcessEvent(CFWL_Event* pEvent) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = NULL) override;
+                    const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   void OnKey(CFWL_MsgKey* pMsg);
   void DoSubCtrlKey(CFWL_MsgKey* pMsg);
 
  protected:
   void DisForm_OnProcessMessage(CFWL_Message* pMessage);
   void DisForm_OnLButtonDown(CFWL_MsgMouse* pMsg);
   void DisForm_OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void DisForm_OnKey(CFWL_MsgKey* pMsg);
 
  protected:
   CFWL_ComboBoxImp* m_pOwner;
   friend class CFWL_ComboEditImpDelegate;
   friend class CFWL_ComboListImpDelegate;
 };
 class CFWL_ComboProxyImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_ComboProxyImpDelegate(IFWL_Form* pForm, CFWL_ComboBoxImp* pComboBox);
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = NULL) override;
+                    const CFX_Matrix* pMatrix = nullptr) override;
   void Reset() { m_bLButtonUpSelf = FALSE; }
 
  protected:
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnDeactive(CFWL_MsgDeactivate* pMsg);
   void OnFocusChanged(CFWL_MsgKillFocus* pMsg, FX_BOOL bSet);
   FX_BOOL m_bLButtonDown;
   FX_BOOL m_bLButtonUpSelf;
   FX_FLOAT m_fStartPos;
   IFWL_Form* m_pForm;
   CFWL_ComboBoxImp* m_pComboBox;
 };
 
 #endif  // XFA_FWL_BASEWIDGET_FWL_COMBOBOXIMP_H_