新鲜事
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函数如下定义: void HistogramView::setSelection(const QRect &rect,QItemSelectionModel::SelectionFlags flags) 使用是这 ..
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painter.setBrush(QBrush(Qt::blue,Qt::Dense3Pattern)) painter.setBrush(Qt::blue) Qt帮助文档是这样的: void QPainter::setBru ..
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model->index(row, column, QModelIndex()); model->index(row, column, rootIndex()); 另外,一个模型中是不是存在多个父项, ..
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QModelIndex::QModelIndex() Creates a new empty model index. This type of model index is used to indicate that the position in ..