Fixed issue with semgentation fault occuring when application closes and when reopening keyManagement window

KeyManagementWindow.cpp

@@ -3,7 +3,6 @@
 #include<QWidget>
 #include<string>
 #include<sstream>
-#include<iostream>
 #include<cstdlib>
 #include<fstream>
 #include<ios>
@@ -17,6 +16,7 @@ KeyManagementWindow::KeyManagementWindow(QWidget* parent) : QDialog(parent)
 	comboBoxOfKeys = unique_ptr<QComboBox>{new QComboBox{}};
 	valueOfKey = unique_ptr<QLineEdit>{new QLineEdit{}};
 	generateNewDefaultKeys = unique_ptr<QPushButton>{new QPushButton(tr("Generate New Default Key"))};
+	closeButton = unique_ptr<QPushButton>{new QPushButton(tr("close"))};
 
 	vBox = unique_ptr<QVBoxLayout>{new QVBoxLayout};
 	hBox = unique_ptr<QHBoxLayout>{new QHBoxLayout};
@@ -27,6 +27,7 @@ KeyManagementWindow::KeyManagementWindow(QWidget* parent) : QDialog(parent)
 	hBox.get()->addWidget(valueOfKey.get());
 
 	hBox2.get()->addWidget(generateNewDefaultKeys.get());
+	hBox2.get()->addWidget(closeButton.get());
 
 	vBox.get()->addLayout(hBox.get());
 	vBox.get()->addLayout(hBox2.get());
@@ -40,6 +41,7 @@ KeyManagementWindow::KeyManagementWindow(QWidget* parent) : QDialog(parent)
 
 	QObject::connect(comboBoxOfKeys.get(), SIGNAL(currentIndexChanged(int)), SLOT(test()));
 	QObject::connect(generateNewDefaultKeys.get(), SIGNAL(clicked()), this, SLOT(generation()));
+	QObject::connect(closeButton.get(), SIGNAL(clicked()), this, SLOT(exitApplication()));
 }
 
 
@@ -78,3 +80,7 @@ void KeyManagementWindow::generation()
 	gk.keyMove();
 	gk.keyDump();
 }
+void KeyManagementWindow::exitApplication()
+{
+	this->hide();
+}

KeyManagementWindow.h

@@ -28,6 +28,7 @@ public:
 private slots:	
 	void test();
 	void generation();
+	void exitApplication();
 private:	
 	unique_ptr<QHBoxLayout> hBox;
 	unique_ptr<QHBoxLayout> hBox2;
@@ -35,6 +36,7 @@ private:
 	unique_ptr<QComboBox> comboBoxOfKeys;
 	unique_ptr<QLineEdit> valueOfKey;
 	unique_ptr<QPushButton> generateNewDefaultKeys;
+	unique_ptr<QPushButton> closeButton;
 	const int windowWidth{400};
 	const int windowHeight{400};
 };

MessagingControls.cpp

@@ -1,22 +1,21 @@
-#include<QtGui>
 #include<QString>
 #include<QIcon>
-#include<iostream>
-#include<memory>
 #include"MessagingControls.h"
-#include"KeyManagementWindow.h"
 #include"Encryption.h"
 #include"Decryption.h"
 #include"KeyRetrieval.h"
 
 MessagingControls::MessagingControls()
 {
+	mainWindowWidth = 450;
+	mainWindowHeight = 450;
 	setupMainWindow();
 }
 
 
 void MessagingControls::setupMainWindow()
 {
+	kh = unique_ptr<KeyManagementWindow>{new KeyManagementWindow};
 	textForCryption = unique_ptr<QTextEdit>{new QTextEdit{}};
 	cryptionButon = unique_ptr<QPushButton>{new QPushButton(tr("XO"))};
 	cryptionSwitch = unique_ptr<QPushButton>{new QPushButton(tr("encrypt chosen"))};
@@ -41,7 +40,7 @@ void MessagingControls::setupMainWindow()
 
 	createMenus();
 
-	QObject::connect(closeApplication.get(), SIGNAL(triggered()), this, SLOT(close()));
+	QObject::connect(closeApplication.get(), SIGNAL(triggered()), this, SLOT(exitApplication()));
 	QObject::connect(cryptionSwitch.get(), SIGNAL(clicked()), this, SLOT(changeCryptionType()));
 	QObject::connect(cryptionButon.get(), SIGNAL(clicked()), this, SLOT(determineCryption()));
 	QObject::connect(keyEdit.get(), SIGNAL(triggered()), this, SLOT(keyManagementWindow()));
@@ -94,11 +93,8 @@ void MessagingControls::determineCryption()
 		cryptionChoice = true;
 	}
 }
-void MessagingControls::keyManagementWindow()
-{
-	kh = unique_ptr<KeyManagementWindow>{new KeyManagementWindow};
-	kh.get()->show();
-}
+void MessagingControls::keyManagementWindow() { kh.get()->show(); }
+void MessagingControls::exitApplication() { exit(0); }
 
 
 std::string MessagingControls::grabCryptionText()

MessagingControls.h

@@ -13,19 +13,9 @@
 #include<QVBoxLayout>
 #include<QDockWidget>
 #include<QWidget>
-#include<QString>
 #include<memory>
 #include"KeyManagementWindow.h"
 
-class QLabel;
-class QLineEdit;
-class QTextEdit;
-class QPushButton;
-class QMenuBar;
-class QMainWindow;
-class QMenu;
-class QAction;
-class QString;
 
 using std::unique_ptr;
 
@@ -41,6 +31,7 @@ private slots:
 	void changeCryptionType();
 	void determineCryption();
 	void keyManagementWindow();
+	void exitApplication();
 private:	
 	void setupMainWindow();
 	void createMenus();
@@ -70,9 +61,9 @@ private:
 
 	std::string grabCryptionText();
 
-	int mainWindowHeight{450};
-	int mainWindowWidth{550};
+	int mainWindowHeight;
+	int mainWindowWidth;
 
-	bool cryptionChoice{true};
+	bool cryptionChoice;
 };
 #endif