qt: Add option to configure LPT4 device

src/qt/qt_settingsports.cpp

@@ -34,7 +34,7 @@ SettingsPorts::SettingsPorts(QWidget *parent) :
 {
     ui->setupUi(this);
 
-    for (int i = 0; i < 3; i++) {
+    for (int i = 0; i < 4; i++) {
         auto* cbox = findChild<QComboBox*>(QString("comboBoxLpt%1").arg(i+1));
         auto* model = cbox->model();
         int c = 0;
@@ -95,3 +95,8 @@ void SettingsPorts::on_checkBoxParallel3_stateChanged(int state) {
     ui->comboBoxLpt3->setEnabled(state == Qt::Checked);
 }
 
+
+void SettingsPorts::on_checkBoxParallel4_stateChanged(int state) {
+    ui->comboBoxLpt4->setEnabled(state == Qt::Checked);
+}
+

src/qt/qt_settingsports.hpp

@@ -21,6 +21,8 @@ private slots:
     void on_checkBoxParallel2_stateChanged(int arg1);
     void on_checkBoxParallel1_stateChanged(int arg1);
 
+    void on_checkBoxParallel4_stateChanged(int arg1);
+
 private:
     Ui::SettingsPorts *ui;
 };

src/qt/qt_settingsports.ui

@@ -58,6 +58,16 @@
      <item row="2" column="1">
       <widget class="QComboBox" name="comboBoxLpt3"/>
      </item>
+     <item row="3" column="0">
+      <widget class="QLabel" name="label_4">
+       <property name="text">
+        <string>LPT4 Device:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="1">
+      <widget class="QComboBox" name="comboBoxLpt4"/>
+     </item>
     </layout>
    </item>
    <item>
@@ -111,6 +121,13 @@
        </property>
       </widget>
      </item>
+     <item row="3" column="1">
+      <widget class="QCheckBox" name="checkBoxParallel4">
+       <property name="text">
+        <string>Parallel port 4</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>