diff --git a/mainwindow.cpp b/mainwindow.cpp
index d1a991f..dac8972 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -11,6 +11,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 {
     ui->setupUi(this);
     manager = new QNetworkAccessManager(this);
+    setFixedSize(size());
 }
 
 MainWindow::~MainWindow()
@@ -40,16 +41,22 @@ QString MainWindow::sendCommand(QString cmd)
 
     QNetworkRequest request;
     request.setUrl("http://" + mAddress + ":80/YamahaRemoteControl/ctrl");
+    request.setRawHeader("Content-Type", "text/xml; charset=UTF-8");
+    request.setRawHeader("Content-Length", QByteArray::number(cmd.size()));
+
+    QNetworkReply *reply = manager->post(request, cmd.toUtf8());
+
+    QEventLoop loop;
+    connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
+    loop.exec();
 
-    QNetworkReply *reply = manager->get(request);
     qDebug() << reply->readAll();
-
-
     return res;
 }
-}
 
-void yremote::MainWindow::on_txt_address_textEdited(const QString &arg1)
+void MainWindow::on_txt_address_textEdited(const QString &arg1)
 {
     mAddress = arg1;
 }
+
+}
diff --git a/mainwindow.ui b/mainwindow.ui
index cc5ef17..62d0386 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -10,6 +10,9 @@
     <height>168</height>
    </rect>
   </property>
+  <property name="contextMenuPolicy">
+   <enum>Qt::NoContextMenu</enum>
+  </property>
   <property name="windowTitle">
    <string>yremote</string>
   </property>