Get rid of NULLs in fpdfsdk/

fpdfsdk/pdfwindow/PWL_IconList.cpp

 // 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
 
 #include "fpdfsdk/pdfwindow/PWL_IconList.h"
 
 #include "fpdfsdk/pdfwindow/PWL_Label.h"
 #include "fpdfsdk/pdfwindow/PWL_ListCtrl.h"
 #include "fpdfsdk/pdfwindow/PWL_ScrollBar.h"
 #include "fpdfsdk/pdfwindow/PWL_Utils.h"
 #include "fpdfsdk/pdfwindow/PWL_Wnd.h"
 #include "public/fpdf_fwlevent.h"
 
 #define PWL_IconList_ITEM_ICON_LEFTMARGIN 10.0f
 #define PWL_IconList_ITEM_WIDTH 20.0f
 #define PWL_IconList_ITEM_HEIGHT 20.0f
 #define PWL_IconList_ITEM_SPACE 4.0f
 
 CPWL_IconList_Item::CPWL_IconList_Item()
-    : m_nIconIndex(-1), m_pData(NULL), m_bSelected(FALSE), m_pText(NULL) {}
+    : m_nIconIndex(-1),
+      m_pData(nullptr),
+      m_bSelected(FALSE),
+      m_pText(nullptr) {}
 
 CPWL_IconList_Item::~CPWL_IconList_Item() {}
 
 CFX_ByteString CPWL_IconList_Item::GetClassName() const {
   return "CPWL_IconList_Item";
 }
 
 FX_FLOAT CPWL_IconList_Item::GetItemHeight(FX_FLOAT fLimitWidth) {
   return PWL_IconList_ITEM_HEIGHT;
 }
@@ skipping 248 matching lines @@
 CPWL_IconList_Item* CPWL_IconList_Content::GetListItem(
     int32_t nItemIndex) const {
   if (nItemIndex >= 0 && nItemIndex < m_aChildren.GetSize()) {
     if (CPWL_Wnd* pChild = m_aChildren.GetAt(nItemIndex)) {
       if (pChild->GetClassName() == "CPWL_IconList_Item") {
         return (CPWL_IconList_Item*)pChild;
       }
     }
   }
 
-  return NULL;
+  return nullptr;
 }
 
 void CPWL_IconList_Content::SetListData(int32_t nItemIndex, void* pData) {
   if (CPWL_IconList_Item* pItem = GetListItem(nItemIndex))
     pItem->SetData(pData);
 }
 
 void CPWL_IconList_Content::SetListIcon(int32_t nItemIndex,
                                         int32_t nIconIndex) {
   if (CPWL_IconList_Item* pItem = GetListItem(nItemIndex))
@@ skipping 19 matching lines @@
       if (pChild->GetClassName() == "CPWL_IconList_Item") {
         CPWL_IconList_Item* pItem = (CPWL_IconList_Item*)pChild;
         pItem->SetIconFillColor(color);
         pItem->InvalidateRect();
       }
     }
   }
 }
 
 CPWL_IconList::CPWL_IconList(int32_t nListCount)
-    : m_pListContent(NULL), m_nListCount(nListCount) {}
+    : m_pListContent(nullptr), m_nListCount(nListCount) {}
 
 CPWL_IconList::~CPWL_IconList() {}
 
 void CPWL_IconList::RePosChildWnd() {
   CPWL_Wnd::RePosChildWnd();
 
   if (m_pListContent)
     m_pListContent->Move(GetClientRect(), TRUE, FALSE);
 }
 
@@ skipping 43 matching lines @@
 
             pScrollBar->OnNotify(pWnd, PNM_SETSCROLLINFO, wParam, lParam);
           }
         }
         return;
       case PNM_SCROLLWINDOW:
         if (m_pListContent) {
           m_pListContent->SetScrollPos(
               CFX_FloatPoint(0.0f, *(FX_FLOAT*)lParam));
           m_pListContent->ResetFace();
-          m_pListContent->InvalidateRect(NULL);
+          m_pListContent->InvalidateRect(nullptr);
         }
         return;
       case PNM_SETSCROLLPOS:
         if (CPWL_ScrollBar* pScrollBar = GetVScrollBar())
           pScrollBar->OnNotify(pWnd, PNM_SETSCROLLPOS, wParam, lParam);
         return;
     }
   }
 }
 
@@ skipping 48 matching lines @@
     if (ptNew.y > rcScroll.top)
       ptNew.y = rcScroll.top;
     if (ptNew.y < rcScroll.bottom + rcContents.Height())
       ptNew.y = rcScroll.bottom + rcContents.Height();
     if (ptNew.y < rcScroll.bottom)
       ptNew.y = rcScroll.bottom;
 
     if (ptNew.y != ptScroll.y) {
       m_pListContent->SetScrollPos(ptNew);
       m_pListContent->ResetFace();
-      m_pListContent->InvalidateRect(NULL);
+      m_pListContent->InvalidateRect(nullptr);
 
       if (CPWL_ScrollBar* pScrollBar = GetVScrollBar())
         pScrollBar->OnNotify(this, PNM_SETSCROLLPOS, SBT_VSCROLL,
                              (intptr_t)&ptNew.y);
 
       return TRUE;
     }
   }
 
   return FALSE;
 }