Qt: Compile InterfaceToolbar with Qt4

The InterfaceToolbar does not currently work with Qt4 because usage
of some Qt 5.2 features, but this should at least make it compile.

Change-Id: Id610e04d6c266556bfb84da5399e57a6c1fe9938
Ping-Bug: 13909
Reviewed-on: https://code.wireshark.org/review/22761
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>

1 files changed, 28 insertions, 0 deletions

diff --git a/ui/qt/interface_toolbar.cpp b/ui/qt/interface_toolbar.cpp
index 7d651501fb..b28fee9abe 100644
--- a/ui/qt/interface_toolbar.cpp
+++ b/ui/qt/interface_toolbar.cpp
@@ -255,7 +255,15 @@ QWidget *InterfaceToolbar::createSelector(iface_toolbar_control *control)
         combobox->addItem(display, value);
         if (val->is_default)
         {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
             combobox->setCurrentText(display);
+#else
+            int new_index = combobox->findText(display);
+            if (new_index >= 0)
+            {
+                combobox->setCurrentIndex(new_index);
+            }
+#endif
             setDefaultValue(control->num, value.toUtf8());
         }
         foreach (QString ifname, interface_.keys())
@@ -760,9 +768,21 @@ void InterfaceToolbar::startCapture(GArray *ifaces)
     }
 
     if (!selected_found && !first_capturing_ifname.isEmpty())
+    {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
         ui->interfacesComboBox->setCurrentText(first_capturing_ifname);
+#else
+        int new_index = ui->interfacesComboBox->findText(first_capturing_ifname);
+        if (new_index >= 0)
+        {
+            ui->interfacesComboBox->setCurrentIndex(new_index);
+        }
+#endif
+    }
     else
+    {
         updateWidgets();
+    }
 #endif // HAVE_EXTCAP
 }
 
@@ -936,7 +956,15 @@ void InterfaceToolbar::interfaceListChanged()
             if (selected_ifname.compare(device.name) == 0)
             {
                 // Keep selected interface
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
                 ui->interfacesComboBox->setCurrentText(device.name);
+#else
+                int new_index = ui->interfacesComboBox->findText(device.name);
+                if (new_index >= 0)
+                {
+                    ui->interfacesComboBox->setCurrentIndex(new_index);
+                }
+#endif
                 keep_selected = true;
             }
         }