cloneShape context copy draw drawShape equals fromHandle getHandleCount getHandlePoint getHandleType getID getParent getPoint getPointCount getTag hasFillColor isKindOf load Null save setContext setContext setParent setTag shape shapec toHandle Type ~MgShape

Null() static MgShape* MgShape::Null ( ) static 零指针 这是这个函数的调用关系图: