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CALLFRAMEINFO structure (callobj.h)

  • Article

Provides information about a call frame such as the method in the call frame, if it has in, out, or in/out parameters, the number of [in], [out], or [in, out] interfaces, the interface ID, the number of methods in the interface and the number of parameters in this method.

Syntax

typedef struct __MIDL_ICallFrame_0001 {
  ULONG iMethod;
  BOOL  fHasInValues;
  BOOL  fHasInOutValues;
  BOOL  fHasOutValues;
  BOOL  fDerivesFromIDispatch;
  LONG  cInInterfacesMax;
  LONG  cInOutInterfacesMax;
  LONG  cOutInterfacesMax;
  LONG  cTopLevelInInterfaces;
  IID   iid;
  ULONG cMethod;
  ULONG cParams;
} CALLFRAMEINFO;

Members

iMethod

The method number within the interface in question.

fHasInValues

TRUE if there are any [in] parameters in the method; otherwise, FALSE.

fHasInOutValues

TRUE if there are any [in, out] parameters in the method; otherwise, FALSE.

fHasOutValues

TRUE if there are any out parameters other than HRESULT or void return values in the method; otherwise, FALSE.

fDerivesFromIDispatch

TRUE if the interface is derived from IDispatch; otherwise, FALSE.

cInInterfacesMax

If this parameter has a value greater or equal to 0, then the value is an absolute upper bound on the number [in] interfaces. If this parameter is less than 0, then the method may have an unbounded number of [in] interfaces. If this parameter is equal to 0, then there are no [in] interfaces.

cInOutInterfacesMax

If this parameter has a value greater or equal to 0, then the value is an absolute upper bound on the number [in, out] interfaces. If this parameter is less than 0, then the method may have an unbounded number of [in, out] interfaces. If this parameter is equal to 0, then there are no [in, out] interfaces.

cOutInterfacesMax

If this parameter has a value greater or equal to 0, then the value is an absolute upper bound on the number [out] interfaces. If this parameter is less than 0, then the method may have an unbounded number of [out] interfaces. If this parameter is equal to 0, then there are no [out] interfaces.

cTopLevelInInterfaces

The number of parameters that are in interface pointers.

iid

The interface ID.

cMethod

The number of methods in iid.

cParams

The number of parameters in imethod. The receiver is excluded.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Header callobj.h

See also

ICallFrame

ICallIndirect