void InvokeHelper( DISPID dwDispID, WORD wFlags, VARTYPE vtRet, void* pvRet, const BYTE* pbParamInfo, ... );
throw( COleException );
throw( COleDispatchException );
Parameters
dwDispID
Identifies the method or property to be invoked. This value is usually supplied by Component Gallery.
wFlags
Flags describing the context of the call to IDispatch::Invoke. For possible wFlags values, see IDispatch::Invoke in the Win32 SDK OLE Programmer's Reference.
vtRet
Specifies the type of the return value. For possible values, see the Remarks section for COleDispatchDriver::InvokeHelper.
pvRet
Address of the variable that will that will receive the property value or return value. It must match the type specified by vtRet.
pbParamInfo
Pointer to a null-terminated string of bytes specifying the types of the parameters following pbParamInfo. For possible values, see the Remarks section for COleDispatchDriver::InvokeHelper.
...
Variable List of parameters, of types specified in pbParamInfo.
Remarks
Call this member function to invoke the OLE control method or property specified by dwDispID, in the context specified by wFlags. The pbParamInfo parameter specifies the types of the parameters passed to the method or property. The variable list of arguments is represented by ... in the syntax declaration.
This function converts the parameters to VARIANTARG values, then invokes the IDispatch::Invoke method on the OLE control. If the call to IDispatch::Invoke fails, this function will throw an exception. If the SCODE (status code) returned by IDispatch::Invoke is DISP_E_EXCEPTION, this function throws a COleException object, otherwise it throws a COleDispatchException.
Note This function should be called only on a CWnd object that represents an OLE control.
For more information about using this member function with OLE Control Containers, see the article ActiveX Control Containers: Programming ActiveX Controls in an ActiveX Control Container, in Visual C++ Programmer’s Guide.
CWnd Overview | Class Members | Hierarchy Chart
See Also CWnd::GetProperty, CWnd::SetProperty, COleDispatchDriver, CWnd::CreateControl