From ab358fb3a5e15a521abd0b4333bf8df40c8d1d6b Mon Sep 17 00:00:00 2001
From: "yifang.xiao" <yifang.xiao@outlook.com>
Date: Thu, 18 Nov 2021 14:28:12 +0800
Subject: [PATCH] remove  old qt(<5) code.

---
 articleview.cc      | 9 ---------
 loaddictionaries.cc | 4 ----
 mainwindow.cc       | 2 +-
 scanpopup.cc        | 2 +-
 treeview.cc         | 7 -------
 5 files changed, 2 insertions(+), 22 deletions(-)

diff --git a/articleview.cc b/articleview.cc
index 18c96683..44276c91 100644
--- a/articleview.cc
+++ b/articleview.cc
@@ -2418,9 +2418,6 @@ void ArticleView::performFindOperation( bool restart, bool backwards, bool check
 
     if ( ui.searchCaseSensitive->isChecked() )
       f |= QWebEnginePage::FindCaseSensitively;
-#if QT_VERSION >= 0x040600  && QT_VERSION <= 0x050600
-    f |= QWebEnginePage::HighlightAllOccurrences;
-#endif
 
     ui.definition->findText( "", f );
 
@@ -2678,15 +2675,9 @@ void ArticleView::highlightFTSResults()
   if( ftsSearchMatchCase )
     flags |= QWebEnginePage::FindCaseSensitively;
 
-#if QT_VERSION >= 0x040600
- // flags |= QWebEnginePage::HighlightAllOccurrences;
-
   for( int x = 0; x < allMatches.size(); x++ )
     ui.definition->findText( allMatches.at( x ), flags );
 
- // flags &= ~QWebEnginePage::HighlightAllOccurrences;
-#endif
-
   if( !allMatches.isEmpty() )
   {
       ui.definition->findText( allMatches.at( 0 ), flags );
diff --git a/loaddictionaries.cc b/loaddictionaries.cc
index 3bd7e15c..24bdd1aa 100644
--- a/loaddictionaries.cc
+++ b/loaddictionaries.cc
@@ -381,10 +381,6 @@ void loadDictionaries( QWidget * parent, bool showInitially,
   set< string > ids;
   std::pair< std::set< string >::iterator, bool > ret;
 
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
-  QTextCodec::setCodecForCStrings( QTextCodec::codecForName( "UTF8" ) );
-#endif
-
   for( unsigned x = dictionaries.size(); x--; )
   {
     ret = ids.insert( dictionaries[ x ]->getId() );
diff --git a/mainwindow.cc b/mainwindow.cc
index 887f3b25..b875b7ec 100644
--- a/mainwindow.cc
+++ b/mainwindow.cc
@@ -599,7 +599,7 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
   connect( ui.menuHistory, SIGNAL( aboutToShow() ),
            this, SLOT( updateHistoryMenu() ) );
 
-#if !defined( HAVE_X11 ) || QT_VERSION < QT_VERSION_CHECK( 5, 0, 0 )
+#if !defined( HAVE_X11 )
   // Show tray icon early so the user would be happy. It won't be functional
   // though until the program inits fully.
   // Do not create dummy tray icon in X. Cause QT5 failed to upgrade systemtray context menu.
diff --git a/scanpopup.cc b/scanpopup.cc
index 4de1ca95..e59267a5 100644
--- a/scanpopup.cc
+++ b/scanpopup.cc
@@ -25,7 +25,7 @@ using std::wstring;
 /// in their behavior on those platforms.
 static const Qt::WindowFlags defaultUnpinnedWindowFlags =
 
-#if defined (Q_OS_WIN) || ( defined (Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK( 5, 3, 0 ) )
+#if defined (Q_OS_WIN)
 Qt::Tool | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint
 #else
 Qt::Popup
diff --git a/treeview.cc b/treeview.cc
index 3dea81e2..b4a22aed 100644
--- a/treeview.cc
+++ b/treeview.cc
@@ -7,11 +7,4 @@
 void TreeView::dropEvent( QDropEvent * event )
 {
   QTreeView::dropEvent( event );
-
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
-  // Qt 4 don't check success of drop operation. Add turnaround.
-
-  if( !event->isAccepted() )
-    event->setDropAction( Qt::IgnoreAction );
-#endif
 }