Qt/C++ QTableWidget：双击标题时执行某些操作
我的表单中有一个 QTableWidget，我想在用户双击行或列的标题时执行某些操作。我正在使用以下连接语句：
connect(ui->tblResults->horizontalHeader(),SIGNAL(doubleClicked(QModelIndex)),this,SLOT(tableDoubleClicked(QModelIndex)));
其中 this 是窗口类，ui->tblResults 是窗口窗体上的 QTableWidget。当我尝试双击标题时，没有任何反应。我要连接的插槽是：
void wndSearch::tableDoubleClicked(QModelIndex tmp){
QMessageBox::information(0,"DERP!","TEST");
}
非常简单，只需测试该插槽是否被调用。我从来没有收到过这个消息框。我在 connect() 调用上没有收到任何运行时错误。
我使用了错误的信号吗？还有什么问题吗？如果您需要更多信息，请告诉我，感谢您的帮助！
[编辑] freenode 上#qt 中的某人帮助了我。我正在寻找的信号是sectionDoubleClicked(int)
I have a QTableWidget in my form and I want to do something when a user doubleclicks on the header of a row or column. I am using the following connect statement:
connect(ui->tblResults->horizontalHeader(),SIGNAL(doubleClicked(QModelIndex)),this,SLOT(tableDoubleClicked(QModelIndex)));
Where this is the window class and ui->tblResults is the QTableWidget on the window's form. When I try doubleclicking the header, nothing happens. The slot I'm connecting to is:
void wndSearch::tableDoubleClicked(QModelIndex tmp){
QMessageBox::information(0,"DERP!","TEST");
}
Very simple, just testing to see if the slot gets called. I never receive this messagebox. I am not getting any runtime error on the connect() call.
Am I using the wrong signal? Is something else wrong? Please let me know if you need anymore information, and thanks for the help!
[edit]
Someone in #qt on freenode helped me out. SIGNAL I was looking for was sectionDoubleClicked(int)
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http://doc.qt.nokia.com/latest/qheaderview.html#sectionDoubleClicked
您可以通过
QTableWidget::horizontalHeader()或QTableWidget::verticalHeader()获取QHeaderView。http://doc.qt.nokia.com/latest/qheaderview.html#sectionDoubleClicked
You can get the
QHeaderViewviaQTableWidget::horizontalHeader()orQTableWidget::verticalHeader().