The OLEOBJECTVTBL structure points to the callback functions that manipulate an object. After a server application creates this structure and an OLEOBJECT structure (which points to OLEOBJECTVTBL), the OLESVR.DLL can access an object.
The OLEOBJECTVTBL structure is defined in OLE.H as follows:
typedef struct _OLEOBJECTVTBL {
LPVOID (CALLBACK *QueryProtocol)(LPOLEOBJECT, OLE_LPCSTR);
OLESTATUS (CALLBACK *Release)(LPOLEOBJECT);
OLESTATUS (CALLBACK *Show)(LPOLEOBJECT, BOOL);
OLESTATUS (CALLBACK *DoVerb)(LPOLEOBJECT, UINT, BOOL, BOOL);
OLESTATUS (CALLBACK *GetData)(LPOLEOBJECT, OLECLIPFORMAT,
HANDLE FAR*);
OLESTATUS (CALLBACK *SetData)(LPOLEOBJECT, OLECLIPFORMAT,
HANDLE);
OLESTATUS (CALLBACK *SetTargetDevice)(LPOLEOBJECT, HGLOBAL);
OLESTATUS (CALLBACK *SetBounds)(LPOLEOBJECT, OLE_CONST RECT FAR*);
OLECLIPFORMAT (CALLBACK *EnumFormats)(LPOLEOBJECT, OLECLIPFORMAT);
OLESTATUS (CALLBACK *SetColorScheme)(LPOLEOBJECT, OLE_CONST
LOGPALETTE FAR*);
} OLEOBJECTVTBL
7.1.11.1 OLEOBJECTVTBL Structure Summary
The following table lists the members of the OLEOBJECTVTBL data structure. Each member points to a specific callback function.
| Structure Member | Description |
| QueryProtocol | Determines which protocols the server applications supports. |
| Release | Frees the resources associated with the specified OLEOBJECT structure. |
| Show | Shows an object's window by making it visible. |
| DoVerb | Specifies what kind of action a server should take when an object is opened. |
| GetData | Returns a handle to the requested data. |
| SetData | Provides the server with the object's native data. |
| SetTargetDevice | Gives information about the client's target device for the object. |
| SetBounds | Returns OLE_OK. Provided for compatibility only. |
| EnumFormats | Enumerates the data formats that the object can render. |
| SetColorScheme | Specifies the palette to be used when the server application edits an object. |