QT,QAction中的ToolTip
QAction ( const QString & text, QObject * parent )
QAction ( const QIcon & icon, const QString & text, QObject * parent )
QAction的两个构造函数中的text参数,文档的描述是:
The action uses a stripped version of text (e.g. "&Menu Option..." becomes "Menu Option") as descriptive text for tool buttons. You can override this by setting a specific description with setText(). The same text will be used for tooltips unless you specify a different text using setToolTip().
这个text会作为默认的toolTip提示,如果你另外想指定toolTip请使用setToolTip().
QToolButton *pTb = new QToolButton();
QAction *pAct = new QAction("默认提示",this);
pTb ->setDefaultAction(act);
设置QToolButton的默认提示。如果不想有提示,text设为"" 空字符串即可。