EOleSysError is the exception class for errors specific to the OLE IDispatch interface.
EOleSysError = class(EOleError);
class EOleSysError : public EOleError;
EOleSysError is the exception class for errors that occur during an attempt to invoke a method or property of an OLE automation object. When the IDispatch Invoke method fails, EOleSysError is raised. Objects invoked through IDispatch can return the error code—an OLE status code or SCODE—indicating the reason for the error.
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