S60: cleanup stack

如果是局部指针的话，需要这样（否则heap内的内存无法回收）：

 

void SafeFunctionL(){CAnotherClass* theObject = new (ELeave) CAnotherClass();// Push to the cleanup stack before calling// any methods that may leave.CleanupStack::PushL(theObject);// If leave happens here, theObject will still be// deleted.theObject ->InitializeL();// Pop the object from the cleanup stack.CleanupStack::Pop(theObject);// And finally delete the object.delete theObject;// Alternatively, the last 2 lines of code can// be expressed in one line, as follows:// CleanupStack::PopAndDestroy(theObject);}

 

而如果是类的成员变量，则可以放心大胆地如下：

void CTestClass::SafeFunctionL(){// Heap allocation of a member variableiTheObject = new(ELeave) CAnotherClass();iTheObject ->InitializeL(); // Safe for iTheObject}