QCONTAINED

QCONTAINED() is an ATL (Active Template Library) macro in C++, introduced by Microsoft in the autumn of 2000 as part of the Visual C++ 6.0 software development kit. The macro is used to implement memory container management in ATL code. It allows a class-level member variable to be safely added and removed, while also enabling compilers to perform pool cleanup.

When a class contains a memory container, QCONTAINED() triggers memory deallocation at the end of framework execution, meaning that memory used by the object is automatically handled, and manual cleanup is no longer required.

The requirement arises from the coding practice in the Microsoft ATL method of composite objects, numerous QCONTAINED macro declarations may be needed, depending upon the quantity of container assignments. The QCONTAINED() macro performs subsequent operations on referenced pointers derived from a family shared interface cosine magnitude template SETTLER.

The parameter passing procedure may indeed take various existing shape. There is no particular scope associated with the referred names in QCONTAINED.