Implement support for server listen only and busy state.

Change-Id: I7497e0ee58b3188a187c78d19d5876c9f2a6e469
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

2 files changed, 271 insertions, 219 deletions

diff --git a/examples/serialbus/modbus/slave/mainwindow.cpp b/examples/serialbus/modbus/slave/mainwindow.cpp
index 25a6f38..82976a0 100644
--- a/examples/serialbus/modbus/slave/mainwindow.cpp
+++ b/examples/serialbus/modbus/slave/mainwindow.cpp
@@ -109,6 +109,7 @@ void MainWindow::on_connectType_currentIndexChanged(int index)
         if (ui->portEdit->text().isEmpty())
             ui->portEdit->setText(QLatin1Literal("127.0.0.1:502"));
     }
+    ui->listenOnlyBox->setEnabled(type == Serial);
 
     if (!modbusDevice) {
         ui->connectButton->setDisabled(true);
@@ -132,6 +133,17 @@ void MainWindow::on_connectType_currentIndexChanged(int index)
         connect(modbusDevice, &QModbusServer::errorOccurred,
                 this, &MainWindow::handleDeviceError);
 
+        connect(ui->listenOnlyBox, &QCheckBox::toggled, this, [this](bool toggled) {
+            if (modbusDevice)
+                modbusDevice->setValue(QModbusServer::ListenOnlyMode, toggled);
+        });
+        emit ui->listenOnlyBox->toggled(ui->listenOnlyBox->isChecked());
+        connect(ui->setBusyBox, &QCheckBox::toggled, this, [this](bool toggled) {
+            if (modbusDevice)
+                modbusDevice->setValue(QModbusServer::DeviceBusy, toggled ? 0xffff : 0x0000);
+        });
+        emit ui->setBusyBox->toggled(ui->setBusyBox->isChecked());
+
         setupDeviceData();
     }
 }
diff --git a/examples/serialbus/modbus/slave/mainwindow.ui b/examples/serialbus/modbus/slave/mainwindow.ui
index 61a0ba4..2a2107e 100644
--- a/examples/serialbus/modbus/slave/mainwindow.ui
+++ b/examples/serialbus/modbus/slave/mainwindow.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>516</width>
-    <height>377</height>
+    <height>396</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -15,6 +15,12 @@
   </property>
   <widget class="QWidget" name="centralWidget">
    <layout class="QVBoxLayout" name="verticalLayout">
+    <property name="topMargin">
+     <number>9</number>
+    </property>
+    <property name="bottomMargin">
+     <number>0</number>
+    </property>
     <item>
      <layout class="QGridLayout" name="gridLayout">
       <item row="0" column="5">
@@ -52,19 +58,6 @@
         </property>
        </widget>
       </item>
-      <item row="0" column="4">
-       <spacer name="horizontalSpacer">
-        <property name="orientation">
-         <enum>Qt::Horizontal</enum>
-        </property>
-        <property name="sizeHint" stdset="0">
-         <size>
-          <width>40</width>
-          <height>20</height>
-         </size>
-        </property>
-       </spacer>
-      </item>
       <item row="0" column="6">
        <widget class="QSpinBox" name="serverEdit">
         <property name="sizePolicy">
@@ -81,6 +74,19 @@
         </property>
        </widget>
       </item>
+      <item row="0" column="4">
+       <spacer name="horizontalSpacer">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
       <item row="0" column="1">
        <widget class="QComboBox" name="connectType">
         <item>
@@ -128,6 +134,37 @@
      </layout>
     </item>
     <item>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <item>
+       <widget class="QCheckBox" name="setBusyBox">
+        <property name="text">
+         <string>Set server busy</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QCheckBox" name="listenOnlyBox">
+        <property name="text">
+         <string>Set server listen only</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <spacer name="horizontalSpacer_2">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+     </layout>
+    </item>
+    <item>
      <spacer name="verticalSpacer">
       <property name="orientation">
        <enum>Qt::Vertical</enum>
@@ -145,52 +182,35 @@
     </item>
     <item>
      <layout class="QGridLayout" name="gridLayout_2">
-      <item row="0" column="0">
-       <widget class="QLabel" name="coils">
-        <property name="sizePolicy">
-         <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
-          <horstretch>0</horstretch>
-          <verstretch>0</verstretch>
-         </sizepolicy>
-        </property>
-        <property name="text">
-         <string>Coils</string>
-        </property>
-       </widget>
-      </item>
-      <item row="0" column="1">
-       <widget class="QLabel" name="discreteInputs">
+      <item row="3" column="1">
+       <widget class="QCheckBox" name="disc_2">
         <property name="text">
-         <string>Discrete Inputs</string>
+         <string>2</string>
         </property>
        </widget>
       </item>
-      <item row="0" column="2">
-       <widget class="QLabel" name="address">
+      <item row="3" column="2">
+       <widget class="QLabel" name="label_23">
         <property name="text">
-         <string>Address</string>
+         <string>2</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="0" column="3">
-       <widget class="QLabel" name="inputRegisters">
-        <property name="text">
-         <string>Input Registers</string>
+      <item row="3" column="4">
+       <widget class="QLineEdit" name="holdReg_2">
+        <property name="maxLength">
+         <number>32767</number>
         </property>
-       </widget>
-      </item>
-      <item row="0" column="4">
-       <widget class="QLabel" name="holdingRegisters">
-        <property name="text">
-         <string>Holding Registers</string>
+        <property name="placeholderText">
+         <string>Hexadecimal A-F, a-f, 0-9.</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="0">
-       <widget class="QCheckBox" name="coils_0">
+      <item row="4" column="0">
+       <widget class="QCheckBox" name="coils_3">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -198,39 +218,39 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>0</string>
+         <string>3</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="1">
-       <widget class="QCheckBox" name="disc_0">
-        <property name="text">
-         <string>0</string>
+      <item row="3" column="3">
+       <widget class="QLineEdit" name="inReg_2">
+        <property name="maxLength">
+         <number>32767</number>
+        </property>
+        <property name="placeholderText">
+         <string>Hexadecimal A-F, a-f, 0-9.</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="2">
-       <widget class="QLabel" name="label_21">
+      <item row="4" column="1">
+       <widget class="QCheckBox" name="disc_3">
         <property name="text">
-         <string>0</string>
-        </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         <string>3</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="3">
-       <widget class="QLineEdit" name="inReg_0">
-        <property name="maxLength">
-         <number>32767</number>
+      <item row="4" column="2">
+       <widget class="QLabel" name="label_11">
+        <property name="text">
+         <string>3</string>
         </property>
-        <property name="placeholderText">
-         <string>Hexadecimal A-F, a-f, 0-9.</string>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="1" column="4">
-       <widget class="QLineEdit" name="holdReg_0">
+      <item row="4" column="3">
+       <widget class="QLineEdit" name="inReg_3">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -239,8 +259,8 @@
         </property>
        </widget>
       </item>
-      <item row="2" column="0">
-       <widget class="QCheckBox" name="coils_1">
+      <item row="5" column="0">
+       <widget class="QCheckBox" name="coils_4">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -248,29 +268,39 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>1</string>
+         <string>4</string>
         </property>
        </widget>
       </item>
-      <item row="2" column="1">
-       <widget class="QCheckBox" name="disc_1">
+      <item row="4" column="4">
+       <widget class="QLineEdit" name="holdReg_3">
+        <property name="maxLength">
+         <number>32767</number>
+        </property>
+        <property name="placeholderText">
+         <string>Hexadecimal A-F, a-f, 0-9.</string>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="1">
+       <widget class="QCheckBox" name="disc_4">
         <property name="text">
-         <string>1</string>
+         <string>4</string>
         </property>
        </widget>
       </item>
-      <item row="2" column="2">
-       <widget class="QLabel" name="label_22">
+      <item row="5" column="2">
+       <widget class="QLabel" name="label_8">
         <property name="text">
-         <string>1</string>
+         <string>4</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="2" column="3">
-       <widget class="QLineEdit" name="inReg_1">
+      <item row="5" column="3">
+       <widget class="QLineEdit" name="inReg_4">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -279,8 +309,8 @@
         </property>
        </widget>
       </item>
-      <item row="2" column="4">
-       <widget class="QLineEdit" name="holdReg_1">
+      <item row="5" column="4">
+       <widget class="QLineEdit" name="holdReg_4">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -289,8 +319,8 @@
         </property>
        </widget>
       </item>
-      <item row="3" column="0">
-       <widget class="QCheckBox" name="coils_2">
+      <item row="6" column="0">
+       <widget class="QCheckBox" name="coils_5">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -298,39 +328,39 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>2</string>
+         <string>5</string>
         </property>
        </widget>
       </item>
-      <item row="3" column="1">
-       <widget class="QCheckBox" name="disc_2">
-        <property name="text">
-         <string>2</string>
+      <item row="6" column="3">
+       <widget class="QLineEdit" name="inReg_5">
+        <property name="maxLength">
+         <number>32767</number>
+        </property>
+        <property name="placeholderText">
+         <string>Hexadecimal A-F, a-f, 0-9.</string>
         </property>
        </widget>
       </item>
-      <item row="3" column="2">
-       <widget class="QLabel" name="label_23">
+      <item row="6" column="1">
+       <widget class="QCheckBox" name="disc_5">
         <property name="text">
-         <string>2</string>
-        </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         <string>5</string>
         </property>
        </widget>
       </item>
-      <item row="3" column="3">
-       <widget class="QLineEdit" name="inReg_2">
-        <property name="maxLength">
-         <number>32767</number>
+      <item row="6" column="2">
+       <widget class="QLabel" name="label_12">
+        <property name="text">
+         <string>5</string>
         </property>
-        <property name="placeholderText">
-         <string>Hexadecimal A-F, a-f, 0-9.</string>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="3" column="4">
-       <widget class="QLineEdit" name="holdReg_2">
+      <item row="6" column="4">
+       <widget class="QLineEdit" name="holdReg_5">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -339,8 +369,8 @@
         </property>
        </widget>
       </item>
-      <item row="4" column="0">
-       <widget class="QCheckBox" name="coils_3">
+      <item row="7" column="0">
+       <widget class="QCheckBox" name="coils_6">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -348,39 +378,12 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>3</string>
-        </property>
-       </widget>
-      </item>
-      <item row="4" column="1">
-       <widget class="QCheckBox" name="disc_3">
-        <property name="text">
-         <string>3</string>
-        </property>
-       </widget>
-      </item>
-      <item row="4" column="2">
-       <widget class="QLabel" name="label_11">
-        <property name="text">
-         <string>3</string>
-        </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-        </property>
-       </widget>
-      </item>
-      <item row="4" column="3">
-       <widget class="QLineEdit" name="inReg_3">
-        <property name="maxLength">
-         <number>32767</number>
-        </property>
-        <property name="placeholderText">
-         <string>Hexadecimal A-F, a-f, 0-9.</string>
+         <string>6</string>
         </property>
        </widget>
       </item>
-      <item row="4" column="4">
-       <widget class="QLineEdit" name="holdReg_3">
+      <item row="1" column="4">
+       <widget class="QLineEdit" name="holdReg_0">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -389,8 +392,8 @@
         </property>
        </widget>
       </item>
-      <item row="5" column="0">
-       <widget class="QCheckBox" name="coils_4">
+      <item row="2" column="0">
+       <widget class="QCheckBox" name="coils_1">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -398,29 +401,29 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>4</string>
+         <string>1</string>
         </property>
        </widget>
       </item>
-      <item row="5" column="1">
-       <widget class="QCheckBox" name="disc_4">
+      <item row="2" column="1">
+       <widget class="QCheckBox" name="disc_1">
         <property name="text">
-         <string>4</string>
+         <string>1</string>
         </property>
        </widget>
       </item>
-      <item row="5" column="2">
-       <widget class="QLabel" name="label_8">
+      <item row="2" column="2">
+       <widget class="QLabel" name="label_22">
         <property name="text">
-         <string>4</string>
+         <string>1</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="5" column="3">
-       <widget class="QLineEdit" name="inReg_4">
+      <item row="2" column="3">
+       <widget class="QLineEdit" name="inReg_1">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -429,8 +432,8 @@
         </property>
        </widget>
       </item>
-      <item row="5" column="4">
-       <widget class="QLineEdit" name="holdReg_4">
+      <item row="2" column="4">
+       <widget class="QLineEdit" name="holdReg_1">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -439,8 +442,8 @@
         </property>
        </widget>
       </item>
-      <item row="6" column="0">
-       <widget class="QCheckBox" name="coils_5">
+      <item row="3" column="0">
+       <widget class="QCheckBox" name="coils_2">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
           <horstretch>0</horstretch>
@@ -448,29 +451,39 @@
          </sizepolicy>
         </property>
         <property name="text">
-         <string>5</string>
+         <string>2</string>
         </property>
        </widget>
       </item>
-      <item row="6" column="1">
-       <widget class="QCheckBox" name="disc_5">
-        <property name="text">
-         <string>5</string>
+      <item row="10" column="3">
+       <widget class="QLineEdit" name="inReg_9">
+        <property name="maxLength">
+         <number>32767</number>
+        </property>
+        <property name="placeholderText">
+         <string>Hexadecimal A-F, a-f, 0-9.</string>
         </property>
        </widget>
       </item>
-      <item row="6" column="2">
-       <widget class="QLabel" name="label_12">
+      <item row="10" column="2">
+       <widget class="QLabel" name="label_16">
         <property name="text">
-         <string>5</string>
+         <string>9</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="6" column="3">
-       <widget class="QLineEdit" name="inReg_5">
+      <item row="10" column="1">
+       <widget class="QCheckBox" name="disc_9">
+        <property name="text">
+         <string>9</string>
+        </property>
+       </widget>
+      </item>
+      <item row="10" column="4">
+       <widget class="QLineEdit" name="holdReg_9">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -479,8 +492,8 @@
         </property>
        </widget>
       </item>
-      <item row="6" column="4">
-       <widget class="QLineEdit" name="holdReg_5">
+      <item row="7" column="3">
+       <widget class="QLineEdit" name="inReg_6">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -489,19 +502,6 @@
         </property>
        </widget>
       </item>
-      <item row="7" column="0">
-       <widget class="QCheckBox" name="coils_6">
-        <property name="sizePolicy">
-         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
-          <horstretch>0</horstretch>
-          <verstretch>0</verstretch>
-         </sizepolicy>
-        </property>
-        <property name="text">
-         <string>6</string>
-        </property>
-       </widget>
-      </item>
       <item row="7" column="1">
        <widget class="QCheckBox" name="disc_6">
         <property name="text">
@@ -509,26 +509,6 @@
         </property>
        </widget>
       </item>
-      <item row="7" column="2">
-       <widget class="QLabel" name="label_13">
-        <property name="text">
-         <string>6</string>
-        </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-        </property>
-       </widget>
-      </item>
-      <item row="7" column="3">
-       <widget class="QLineEdit" name="inReg_6">
-        <property name="maxLength">
-         <number>32767</number>
-        </property>
-        <property name="placeholderText">
-         <string>Hexadecimal A-F, a-f, 0-9.</string>
-        </property>
-       </widget>
-      </item>
       <item row="7" column="4">
        <widget class="QLineEdit" name="holdReg_6">
         <property name="maxLength">
@@ -552,21 +532,21 @@
         </property>
        </widget>
       </item>
-      <item row="8" column="1">
-       <widget class="QCheckBox" name="disc_7">
+      <item row="7" column="2">
+       <widget class="QLabel" name="label_13">
         <property name="text">
-         <string>7</string>
+         <string>6</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="8" column="2">
-       <widget class="QLabel" name="label_14">
+      <item row="8" column="1">
+       <widget class="QCheckBox" name="disc_7">
         <property name="text">
          <string>7</string>
         </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-        </property>
        </widget>
       </item>
       <item row="8" column="3">
@@ -579,6 +559,16 @@
         </property>
        </widget>
       </item>
+      <item row="8" column="2">
+       <widget class="QLabel" name="label_14">
+        <property name="text">
+         <string>7</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
       <item row="8" column="4">
        <widget class="QLineEdit" name="holdReg_7">
         <property name="maxLength">
@@ -629,6 +619,19 @@
         </property>
        </widget>
       </item>
+      <item row="10" column="0">
+       <widget class="QCheckBox" name="coils_9">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>9</string>
+        </property>
+       </widget>
+      </item>
       <item row="9" column="4">
        <widget class="QLineEdit" name="holdReg_8">
         <property name="maxLength">
@@ -639,38 +642,72 @@
         </property>
        </widget>
       </item>
-      <item row="10" column="0">
-       <widget class="QCheckBox" name="coils_9">
+      <item row="0" column="1">
+       <widget class="QLabel" name="discreteInputs">
+        <property name="text">
+         <string>Discrete Inputs</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="3">
+       <widget class="QLabel" name="inputRegisters">
+        <property name="text">
+         <string>Input Registers</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="0">
+       <widget class="QLabel" name="coils">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+         <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
           <horstretch>0</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>
         </property>
         <property name="text">
-         <string>9</string>
+         <string>Coils</string>
         </property>
        </widget>
       </item>
-      <item row="10" column="1">
-       <widget class="QCheckBox" name="disc_9">
+      <item row="0" column="2">
+       <widget class="QLabel" name="address">
         <property name="text">
-         <string>9</string>
+         <string>Address</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
-      <item row="10" column="2">
-       <widget class="QLabel" name="label_16">
+      <item row="0" column="4">
+       <widget class="QLabel" name="holdingRegisters">
         <property name="text">
-         <string>9</string>
+         <string>Holding Registers</string>
         </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QCheckBox" name="coils_0">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>0</string>
         </property>
        </widget>
       </item>
-      <item row="10" column="3">
-       <widget class="QLineEdit" name="inReg_9">
+      <item row="1" column="1">
+       <widget class="QCheckBox" name="disc_0">
+        <property name="text">
+         <string>0</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="3">
+       <widget class="QLineEdit" name="inReg_0">
         <property name="maxLength">
          <number>32767</number>
         </property>
@@ -679,13 +716,13 @@
         </property>
        </widget>
       </item>
-      <item row="10" column="4">
-       <widget class="QLineEdit" name="holdReg_9">
-        <property name="maxLength">
-         <number>32767</number>
+      <item row="1" column="2">
+       <widget class="QLabel" name="label_21">
+        <property name="text">
+         <string>0</string>
         </property>
-        <property name="placeholderText">
-         <string>Hexadecimal A-F, a-f, 0-9.</string>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
         </property>
        </widget>
       </item>
@@ -696,10 +733,13 @@
       <property name="orientation">
        <enum>Qt::Vertical</enum>
       </property>
+      <property name="sizeType">
+       <enum>QSizePolicy::MinimumExpanding</enum>
+      </property>
       <property name="sizeHint" stdset="0">
        <size>
         <width>20</width>
-        <height>8</height>
+        <height>0</height>
        </size>
       </property>
      </spacer>