QT 设置左上角按钮
table->setStyleSheet("QTableCornerButton::section{background-color:red;}");
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二. 设置按钮文本
? ? 虽然没有提供直接的访问方式,可以通过findChild()来定位到该按钮,然后设置其文本及显示宽度.
class TableWidget:public QTableWidget{public: TableWidget(int rows, int cols, QWidget* parent = 0) : QTableWidget(rows, cols, parent) { QAbstractButton* btn = findChild<QAbstractButton*>(); if (btn) { btn->setText("Text"); btn->installEventFilter(this); // adjust the width of the vertical header to match the preferred corner button width // (unfortunately QAbstractButton doesn't implement any size hinting functionality) QStyleOptionHeader opt; opt.text = btn->text(); QSize s = (btn->style()->sizeFromContents(QStyle::CT_HeaderSection, &opt, QSize(), btn). expandedTo(QApplication::globalStrut())); if (s.isValid()) verticalHeader()->setMinimumWidth(s.width()); } } bool eventFilter(QObject* o, QEvent* e) { if (e->type() == QEvent::Paint) { QAbstractButton* btn = qobject_cast<QAbstractButton*>(o); if (btn) { // paint by hand (borrowed from QTableCornerButton) QStyleOptionHeader opt; opt.init(btn); QStyle::State state = QStyle::State_None; if (btn->isEnabled()) state |= QStyle::State_Enabled; if (btn->isActiveWindow()) state |= QStyle::State_Active; if (btn->isDown()) state |= QStyle::State_Sunken; opt.state = state; opt.rect = btn->rect(); opt.text = btn->text(); // this line is the only difference to QTableCornerButton opt.position = QStyleOptionHeader::OnlyOneSection; QStylePainter painter(btn); painter.drawControl(QStyle::CE_Header, opt); return true; // eat event } } return false; }};??
? ? 运行效果:
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