Documentation/Nightly/Developers/Tutorials/MigrationGuide/ObsoleteCodeRemoval

Obsolete Code Removal

This section documents suggested code changes after removing support for a particular features. Each category has a short description, code snippets, a suggested upgrade path, and references to relevant commits.

Qt >= 5.6.0: cpp: QDesignerCustomWidgetInterface header include

Before:

 #include <QtGlobal>
 #if(QT_VERSION < QT_VERSION_CHECKS(5, 6, 0))
 // Obsolete Qt4 code
 #include <QDesignerCustomWidgetInterface>
 #else
 // Qt5 code
 #include <QtUiPlugin/QDesignerCustomWidgetInterface>
 #endif

After:

 #include <QtUiPlugin/QDesignerCustomWidgetInterface>

Qt >= 5.0.0: cpp: Q_PLUGIN_METADATA macro

Before:

 class Q_SLICER_MODULE_SEGMENTATIONS_WIDGETS_PLUGINS_EXPORT qSlicerSegmentationsModuleWidgetsAbstractPlugin
     : public QDesignerCustomWidgetInterface
 {
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
   Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QDesignerCustomWidgetInterface")
 #endif
   Q_INTERFACES(QDesignerCustomWidgetInterface);
 }

After:

  class Q_SLICER_MODULE_SEGMENTATIONS_WIDGETS_PLUGINS_EXPORT qSlicerSegmentationsModuleWidgetsAbstractPlugin
      : public QDesignerCustomWidgetInterface
  {
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QDesignerCustomWidgetInterface")
    Q_INTERFACES(QDesignerCustomWidgetInterface);
  }

Qt >= 5.0.0: Python: Simpler use of setSectionResizeMode

This migration guide points becomes obsolete: Documentation/Nightly/Developers/Tutorials/MigrationGuide#Qt5:_Fix_error:_.E2.80.98class_QHeaderView.E2.80.99_has_no_member_named_.E2.80.98setResizeMode.E2.80.99

Before:

 _setSectionResizeMode(self.horizontalHeader(), 0, qt.QHeaderView.Stretch)
 def _setSectionResizeMode(header, *args, **kwargs):
   if version.parse(qt.Qt.qVersion()) < version.parse("5.0.0"):
     header.setResizeMode(*args, **kwargs)
   else:
     header.setSectionResizeMode(*args, **kwargs)

After:

 self.horizontalHeader(0, qt.QHeaderView.Stretch)