C++ QT4 检测用户何时双击 qtablewidget 标题
我试图检测用户何时双击 qtablewidget 中的标题。为此，我将信号“sectionDoubleClicked(int)”连接到具有相同参数的函数（我从 1 )。我的问题是，我收到以下编译时错误：
mainwindow.cpp:117: error: no matching function for call to âMainWindow::connect(QHeaderView*, const char [27], MainWindow* const, const char [24])â
/usr/lib64/qt4/include/QtCore/qobject.h:181: note: candidates are: static bool QObject::connect(const QObject*, const char*, const QObject*, const char*, Qt::ConnectionType)
/usr/lib64/qt4/include/QtCore/qobject.h:282: note: bool QObject::connect(const QObject*, const char*, const char*, Qt::ConnectionType) const
这是我的代码：
QObject::connect(ui->table_results->horizontalHeader(),SIGNAL(sectionDoubleClicked(int)),
this,SIGNAL(headerclickedscan(int)));
我是否只需要将 HorizontalHeader() 的结果转换为 QObject*？
I am trying to detect when a user double clicks a header in a qtablewidget. To do this I am connecting to the signal "sectionDoubleClicked(int)" to a function with the same arguments (i got this from 1 ). My issue is that I am getting the following compile time error:
mainwindow.cpp:117: error: no matching function for call to âMainWindow::connect(QHeaderView*, const char [27], MainWindow* const, const char [24])â
/usr/lib64/qt4/include/QtCore/qobject.h:181: note: candidates are: static bool QObject::connect(const QObject*, const char*, const QObject*, const char*, Qt::ConnectionType)
/usr/lib64/qt4/include/QtCore/qobject.h:282: note: bool QObject::connect(const QObject*, const char*, const char*, Qt::ConnectionType) const
Here is my code:
QObject::connect(ui->table_results->horizontalHeader(),SIGNAL(sectionDoubleClicked(int)),
this,SIGNAL(headerclickedscan(int)));
do I just need to cast the result of horizontalHeader() to a QObject*?
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评论（1）
您要么没有包含 QHeaderView
，要么没有在 MainWindow 类中声明“headerclickedscan(int)”作为信号。
另外，您确定希望“headerclickedscan(int)”成为信号而不是插槽吗？
You either didn't include QHeaderView by
or didn't declare "headerclickedscan(int)" as signal in your MainWindow class.
Also are you sure you want "headerclickedscan(int)" to be a signal but not a slot ?