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__RTDynamicCast

  • Článek

Runtime implementation of the dynamic_cast operator.

PVOID __RTDynamicCast (
   PVOID inptr, 
   LONG VfDelta,
   PVOID SrcType,
   PVOID TargetType, 
   BOOL isReference
   ) throw(...)

Parameters

  • inptr
    Pointer to a polymorphic object.

  • VfDelta
    Offset of virtual function pointer in object.

  • SrcType
    Static type of object pointed to by the inptr parameter.

  • TargetType
    Intended result of cast.

  • isReference
    true if input is a reference; false if input is a pointer.

Return Value

Pointer to the appropriate sub-object, if successful; otherwise, NULL.

Exceptions

bad_cast() if the input to dynamic_cast<> is a reference and the cast fails.

Remarks

Converts inptr to an object of type TargetType. The type of inptr must be a pointer if TargetType is a pointer, or an l-value if TargetType is a reference. TargetType must be a pointer or a reference to a previously defined class type, or a pointer to void.

Requirements

Routine

Required header

__RTDynamicCast

rtti.h