Polish the modbus client example

- Use modern string literals
- Use QCommandLineParser to switch on verbose mode
- Fix translated texts with arguments
- Streamline some code
- Remove unused member variable
- Use QVariant casts

Change-Id: Ie3bdaa82856bfe8df020dc289de9177d098f02d3
Reviewed-by: Karsten Heimrich <karsten.heimrich@qt.io>
(cherry picked from commit 101295aef757747490fb5533710d9e10bf303d19)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/examples/serialbus/modbus/client/mainwindow.h b/examples/serialbus/modbus/client/mainwindow.h
index f2ab08c..57d6e61 100644
--- a/examples/serialbus/modbus/client/mainwindow.h
+++ b/examples/serialbus/modbus/client/mainwindow.h
@@ -10,11 +10,9 @@
 QT_BEGIN_NAMESPACE
 
 class QModbusClient;
-class QModbusReply;
 
 namespace Ui {
 class MainWindow;
-class SettingsDialog;
 }
 
 QT_END_NAMESPACE
@@ -50,7 +48,6 @@ private slots:
 
 private:
     Ui::MainWindow *ui = nullptr;
-    QModbusReply *lastRequest = nullptr;
     QModbusClient *modbusDevice = nullptr;
     SettingsDialog *m_settingsDialog = nullptr;
     WriteRegisterModel *writeModel = nullptr;