A WTree displays a tree widget.
#include <Wt/WIconPair.h> #include <Wt/WText.h> #include <Wt/WTree.h> #include <Wt/WTreeNode.h> std::unique_ptr<Wt::WTree> tree = std::make_unique<Wt::WTree>(); tree->setSelectionMode(Wt::SelectionMode::Extended); auto folderIcon = std::make_unique<Wt::WIconPair>("icons/yellow-folder-closed.png", "icons/yellow-folder-open.png", false); auto node = std::make_unique<Wt::WTreeNode>("Furniture",std::move(folderIcon)); tree->setTreeRoot(std::move(node)); tree->treeRoot()->label()->setTextFormat(Wt::TextFormat::Plain); tree->treeRoot()->setLoadPolicy(Wt::ContentLoading::NextLevel); tree->treeRoot()->addChildNode(std::make_unique<Wt::WTreeNode>("Table")); tree->treeRoot()->addChildNode(std::make_unique<Wt::WTreeNode>("Cupboard")); auto subtree = std::make_unique<Wt::WTreeNode>("Chair"); auto subtree_ = tree->treeRoot()->addChildNode(std::move(subtree)); tree->treeRoot()->addChildNode(std::make_unique<Wt::WTreeNode>("Coach")); tree->treeRoot()->expand(); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Doc")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Grumpy")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Happy")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Sneezy")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Dopey")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Bashful")); subtree_->addChildNode(std::make_unique<Wt::WTreeNode>("Sleepy"));
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