diff --git a/src/setting_defines.h b/src/setting_defines.h
new file mode 100644
--- /dev/null
+++ b/src/setting_defines.h
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+/*
+  Copyright © 2016 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef SETTING_DEFINES_H
+#define SETTING_DEFINES_H
+
+const char SettingGroup_MainWindow[] = "MainWindow";
+const char SettingGroup_Port[] = "Port";
+const char SettingGroup_DataFormat[] = "DataFormat";
+const char SettingGroup_Channels[] = "Channels";
+const char SettingGroup_Plot[] = "Plot";
+const char SettingGroup_Commands[] = "Commands";
+
+// mainwindow setting keys
+const char SG_MainWindow_Size[] = "size";
+const char SG_MainWindow_Pos[] = "pos";
+
+// port setting keys
+const char SG_Port_SelectedPort[] = "selectedPort";
+const char SG_Port_BaudRate[] = "baudRate";
+const char SG_Port_Parity[] = "parity";
+const char SG_Port_DataBits[] = "dataBits";
+const char SG_Port_StopBits[] = "stopBits";
+const char SG_Port_FlowControl[] = "flowControl";
+
+#endif // SETTING_DEFINES_H