Compatibility Members for QRegion

以下成员源于类 QRegion are part of the Qt compatibility layer. We advise against using them in new code.

公共函数

QRegion (const QPolygon & pa , bool winding )
bool isNull () const

成员函数文档编制

QRegion:: QRegion (const QPolygon & pa , bool winding )

Use the constructor tha takes a Qt::FillRule as the second argument instead.

bool QRegion:: isNull () const

使用 isEmpty () 代替。