Pass CFX_WideString further down widget callers

fpdfsdk/cpdfsdk_widgethandler.cpp

 // Copyright 2016 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/include/cpdfsdk_widgethandler.h"
 
 #include <memory>
 #include <vector>
@@ skipping 223 matching lines @@
 
   CPDFSDK_Widget* pWidget = static_cast<CPDFSDK_Widget*>(pAnnot);
   if (!pWidget->IsAppearanceValid())
     pWidget->ResetAppearance(nullptr, FALSE);
 
   int nFieldType = pWidget->GetFieldType();
   if (nFieldType == FIELDTYPE_TEXTFIELD || nFieldType == FIELDTYPE_COMBOBOX) {
     FX_BOOL bFormatted = FALSE;
     CFX_WideString sValue = pWidget->OnFormat(bFormatted);
     if (bFormatted && nFieldType == FIELDTYPE_COMBOBOX)
-      pWidget->ResetAppearance(sValue.c_str(), FALSE);
+      pWidget->ResetAppearance(&sValue, FALSE);
   }
 
 #ifdef PDF_ENABLE_XFA
   CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
   CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
   CPDFXFA_Document* pDoc = pSDKDoc->GetXFADocument();
   if (pDoc->GetDocType() == DOCTYPE_STATIC_XFA) {
     if (!pWidget->IsAppearanceValid() && !pWidget->GetValue().IsEmpty())
       pWidget->ResetAppearance(FALSE);
   }
@@ skipping 35 matching lines @@
 
 FX_BOOL CPDFSDK_WidgetHandler::HitTest(CPDFSDK_PageView* pPageView,
                                        CPDFSDK_Annot* pAnnot,
                                        const CFX_FloatPoint& point) {
   ASSERT(pPageView);
   ASSERT(pAnnot);
 
   CFX_FloatRect rect = GetViewBBox(pPageView, pAnnot);
   return rect.Contains(point.x, point.y);
 }