Qtreewidget滾動條寬度根據內容自適應調整

1.1   組織樹treewidget滾動條寬度根據內容自適應調整

 

 

Treewidget只有在多列時，纔會自適應顯示橫向滾動條，並且根據內容自動調整滾動條的大小，爲了實現任務列表自適應列寬；需要採用如下方法；信號槽連接treewidget單擊、展開、收起信號，然後去重新調整treewidget的寬度；

connect(ui.treeWidget, SIGNAL(clicked(QModelIndex)), this, SLOT(slot_treeView_pressed(QModelIndex)));

    connect(ui.treeWidget, SIGNAL(expanded(QModelIndex)), this, SLOT(slot_treeView_pressed(QModelIndex)));

    connect(ui.treeWidget, SIGNAL(collapsed(QModelIndex)), this, SLOT(slot_treeView_pressed(QModelIndex)));

slot_treeView_pressed實現方法如下所示：

void TreeTaskList::slot_treeView_pressed(QModelIndex index)

{

    int column = index.column();

    int width = ui.treeWidget->columnWidth(column);

    ui.treeWidget->resizeColumnToContents(index.column());

    width = ui.treeWidget->columnWidth(column);

    //ui.treeWidget->header()->resizeSections(QHeaderView::ResizeToContents);

    /*ui.treeWidget->header()->setSectionResizeMode(QHeaderView::ResizeToContents);

    ui.treeWidget->header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);*/

}