Add a button to open the config file in a text editor

src/qt/optionsdialog.cpp

@@ -227,6 +227,18 @@ void OptionsDialog::on_resetButton_clicked()
     }
 }
 
+void OptionsDialog::on_openBitcoinConfButton_clicked()
+{
+    /* explain the purpose of the config file */
+    QMessageBox::information(this, tr("Configuration options"),
+        tr("The configuration file is used to specify advanced user options which override GUI settings. "
+           "Additionally, any command-line options will override this configuration file."));
+
+    /* show an error if there was some problem opening the file */
+    if (!GUIUtil::openBitcoinConf())
+        QMessageBox::critical(this, tr("Error"), tr("The configuration file could not be opened."));
+}
+
 void OptionsDialog::on_okButton_clicked()
 {
     mapper->submit();