Rename tabformwidget to TabFormWidget.

Fix layout add bug.

src/windows/MainWindow.cpp

@@ -1,19 +1,16 @@
 #include "MainWindow.h"
 
 #include <qtabwidget.h>
-#include <QSizePolicy>
 #include <QHBoxLayout>
 #include <QScrollBar>
 #include <QDateTime>
 #include <QGestureEvent>
 #include <QDockWidget>
 #include <fstream>
-#include <sstream>
-#include <QKeyEvent>
 
 #include "ui_MainWindow.h"
 #include "event/EventCenter.h"
-#include "forms/tabformwidget.h"
+#include "forms/TabFormWidget.h"
 #include "forms/select/SelectFormWidget.h"
 #include "forms/scan/ScanFormWidget.h"
 #include "forms/settings/AdminSettingForm.h"
@@ -219,15 +216,13 @@ void MainWindow::initializeTabWidget()
 
 void MainWindow::initializeLayout()
 {
-    QVBoxLayout* layout = new QVBoxLayout(this);
+    QVBoxLayout* layout = new QVBoxLayout(mUI->mCentralWidget);
     layout->setMargin(0);
     layout->setSpacing(0);
     QWidget* topBarWidget = new TopBarWidget(this);
     topBarWidget->setObjectName("topbarWidget");
     layout->addWidget(topBarWidget);
     layout->addWidget(mTabWidget);
-
-    mUI->mCentralWidget->setLayout(layout);
 }
 
 void MainWindow::QMessageOutput(QtMsgType aType, const QMessageLogContext& aContext, const QString& msg)