Before git init

Qt/networkerror.cpp

@@ -0,0 +1,19 @@
+#include "networkerror.h"
+#include "ui_networkerror.h"
+
+NetworkError::NetworkError(QWidget* parent) : QDialog(parent), ui(new Ui::NetworkError) {
+    ui->setupUi(this);
+    connect(ui->exit, &QPushButton::clicked, this, &QCoreApplication::quit, Qt::QueuedConnection);
+    connect(ui->close, &QPushButton::clicked, this, [=]{this->close();});
+
+    this->setWindowTitle("Error");
+}
+
+void NetworkError::set_error(QString error)
+{
+    ui->Error->setText(error);
+}
+
+NetworkError::~NetworkError() {
+    delete ui;
+}