ui: Added cancel button to enter license window

src/lib_gui/qt/window/QtLicense.cpp

@@ -13,6 +13,7 @@
 
 QtLicense::QtLicense(QWidget *parent)
 	: QtWindow(parent)
+	, m_forced(false)
 {
 	raise();
 }
@@ -45,6 +46,15 @@ void QtLicense::load()
 	{
 		m_licenseText->setText(licenseString.c_str());
 	}
+
+	m_forced = false;
+	updateCloseButton("Cancel");
+}
+
+void QtLicense::loadForced()
+{
+	m_forced = true;
+	updateCloseButton("Quit Coati");
 }
 
 void QtLicense::setErrorMessage(const QString& errorMessage)
@@ -122,14 +132,19 @@ void QtLicense::windowReady()
 	updateNextButton("Activate");
 	setPreviousVisible(false);
 
-	updateCloseButton("Quit Coati");
-
 	m_title->hide();
 }
 
 void QtLicense::handleClose()
 {
-	QApplication::quit();
+	if (m_forced)
+	{
+		QApplication::quit();
+	}
+	else
+	{
+		emit canceled();
+	}
 }
 
 void QtLicense::handleNext()

src/lib_gui/qt/window/QtLicense.h

@@ -18,6 +18,7 @@ public:
 
 	void clear();
 	void load();
+	void loadForced();
 
 	void setErrorMessage(const QString& errorMessage);
 
@@ -32,6 +33,8 @@ protected:
 private:
 	QTextEdit* m_licenseText;
 	QLabel* m_errorLabel;
+
+	bool m_forced;
 };
 
 #endif // QT_LICENSE_H

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -282,9 +282,10 @@ void QtMainWindow::forceEnterLicense(bool expired)
 		enterLicenseWindow->clear();
 	}
 
+	enterLicenseWindow->loadForced();
+
 	this->setEnabled(false);
 	enterLicenseWindow->setEnabled(true);
-	enterLicenseWindow->setCloseVisible(true);
 }
 
 bool QtMainWindow::event(QEvent* event)
@@ -348,7 +349,6 @@ void QtMainWindow::enterLicense()
 	connect(enterLicenseWindow, SIGNAL(finished()), this, SLOT(activateWindow()));
 
 	enterLicenseWindow->load();
-	enterLicenseWindow->setCloseVisible(false);
 }
 
 void QtMainWindow::showStartScreen()