How to hide dotted lines in QTreeWidget

Qt. QTreeWidget. How to hide dotted li开发者_StackOverflownes?

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If this indeed is about the branches (the question is not very clear), then QTreeView (and thus QTreeWidget) has a special function to do just that (since Qt 4.2):

treeWidget->setRootIsDecorated(false);

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If you're talking about the branch lines on the left of the tree, try setting a stylesheet as such :

treeWidget->setStyleSheet(QString("QTreeView::branch { border-image: none; }"));

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What about

treeWidget->setRowHidden(rowNumber,QModelIndex(),true);

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Try strecthing the header with;

treeWidget->header()->setStretchLastSection(true);