Cleanup FWL Event and Message code.

xfa/fwl/core/cfwl_form.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 "xfa/fwl/core/cfwl_form.h"
 
 #include <utility>
 
 #include "third_party/base/ptr_util.h"
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_app.h"
-#include "xfa/fwl/core/cfwl_evtclose.h"
+#include "xfa/fwl/core/cfwl_event.h"
 #include "xfa/fwl/core/cfwl_formproxy.h"
 #include "xfa/fwl/core/cfwl_msgmouse.h"
 #include "xfa/fwl/core/cfwl_notedriver.h"
 #include "xfa/fwl/core/cfwl_noteloop.h"
 #include "xfa/fwl/core/cfwl_sysbtn.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
 #include "xfa/fwl/core/cfwl_themepart.h"
 #include "xfa/fwl/core/cfwl_themetext.h"
 #include "xfa/fwl/core/cfwl_widgetmgr.h"
 #include "xfa/fwl/core/ifwl_themeprovider.h"
@@ skipping 524 matching lines @@
     if (m_bMaximized) {
       SetWidgetRect(m_rtRestore);
       Update();
       Repaint();
     } else {
       SetWorkAreaRect();
       Update();
     }
     m_bMaximized = !m_bMaximized;
   } else if (pPressedBtn != m_pMinBox) {
-    CFWL_EvtClose eClose;
+    CFWL_Event eClose(CFWL_EventType::Close);
     eClose.m_pSrcTarget = this;
     DispatchEvent(&eClose);
   }
 }
 
 void CFWL_Form::OnMouseMove(CFWL_MsgMouse* pMsg) {
   if (m_bLButtonDown)
     return;
 
   CFX_RectF rtInvalidate;
@@ skipping 60 matching lines @@
       HitTest(pMsg->m_fx, pMsg->m_fy) == FWL_WidgetHit::Titlebar) {
     if (m_bMaximized)
       SetWidgetRect(m_rtRestore);
     else
       SetWorkAreaRect();
 
     Update();
     m_bMaximized = !m_bMaximized;
   }
 }