--- a/eric6/Plugins/VcsPlugins/vcsMercurial/CloseheadExtension/HgCloseHeadSelectionDialog.py Mon Mar 01 17:48:43 2021 +0100 +++ b/eric6/Plugins/VcsPlugins/vcsMercurial/CloseheadExtension/HgCloseHeadSelectionDialog.py Tue Mar 02 17:17:09 2021 +0100 @@ -29,8 +29,10 @@ super(HgCloseHeadSelectionDialog, self).__init__(parent) self.setupUi(self) - self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True) - self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(False) + self.buttonBox.button( + QDialogButtonBox.StandardButton.Cancel).setDefault(True) + self.buttonBox.button( + QDialogButtonBox.StandardButton.Ok).setEnabled(False) heads = self.__getHeads(vcs) for revision, branch in heads: @@ -69,7 +71,7 @@ """ Private slot handling changes of the selection. """ - self.buttonBox.button(QDialogButtonBox.Ok).setEnabled( + self.buttonBox.button(QDialogButtonBox.StandardButton.Ok).setEnabled( len(self.headsList.selectedItems()) > 0 )