OAdvise Method

Applies To

OAdvise

Description

OAdvise constructor

Usage

OAdvise(void)

OAdvise(const OAdvise &otheradvise)

OAdvise(const ODynaset &dyn)

Arguments

Remarks

These methods construct a new OAdvise instance.

The default constructor constructs an unopened OAdvise object. It cannot fail. You must open the object before you can use it.

The copy constructor copies another advisory. If that other advisory is open (attached to a dynaset), the new OAdvise will be attached to the same dynaset object. The new OAdvise object will be a separate advisory on the same dynaset object. The copy constructor allows OAdvise objects to be passed correctly as arguments to routines and to be return values from routines. The copy constructor can fail; check whether the new OAdvise is open after the constructor call.

The constructor that takes an ODynaset as an argument constructs the OAdvise object and attempts to open it with that dynaset. This construct and open can fail; check whether the new OAdvise is open after the constructor call.

Note that instances of the OAdvise class itself can be declared, but they do nothing. To have an interesting advisory you must subclass OAdvise.

Example

Construction of an OAdvise object:

// default constructor

OAdvise adv1;

// open that advisory

adv1.Open(thedynaset);

// construct two other advisories, attaching them to the same dynaset

OAdvise adv2(adv1); // copy constructor

if (!adv2.IsOpen())

{ // there was some error opening the advisory

// error processing

}

OAdvise adv3(thedynaset);

if (!adv3.IsOpen())

{ // there was some error opening the advisory

// error processing

}