IMetabaseClass.GetMetabaseObjectClass

Syntax

GetMetabaseObjectClass(ClassId: Integer): MetabaseObjectClass;

Parameters

ClassId - numerical identifier of a class.

Description

The GetMetabaseObjectClass method returns a class of the object that is implemented by the MetabaseObjectClass enumeration type by the numeric value of the class identifier.

Comments

This method is used if it is necessary to work with an object class as with an object of the MetabaseObjectClass type but only numerical identifier of a class is available, foe example as in the case with custom classes.

Example

Executing the example requires a form with the Button1 button and the MetabaseOpenDialog component named MetabaseOpenDialog1. Classes with the MyClass1 and the MyClass2 identifiers are created in a container of custom classes of the object.

    Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
    Var
        MB: IMetabase;
        CustExtender: IMetabaseCustomExtender;
        Classes: IMetabaseCustomClasses;
        ClassFilter1, ClassFilter2: IMetabaseDialogClassFilter;
        CombiFilter: IMetabaseDialogCombiFilter;
    Begin
        MB := MetabaseClass.Active;
        //Get container of custom classes
        CustExtender := MB.SpecialObject(MetabaseSpecialObject.CustomExtender).Bind As IMetabaseCustomExtender;
        //Get a list of custom classes
        Classes := CustExtender.Classes;
        //Create filters by objects classes
        ClassFilter1 := New MetabaseDialogClassFilter.Create;
        ClassFilter2 := New MetabaseDialogClassFilter.Create;
        //Combined filter
        CombiFilter := New MetabaseDialogCombiFilter.Create;
        //Set classes of filtered objects
        ClassFilter1.ObjectClass :=
            MetabaseClass.GetMetabaseObjectClass(Classes.FindById("MyClass1").ClassId);
        ClassFilter2.ObjectClass :=
            MetabaseClass.GetMetabaseObjectClass(Classes.FindById("MyClass2").ClassId);
        //Union in combined filter
        CombiFilter.Filters.AddFilter(ClassFilter1);
        CombiFilter.Filters.AddFilter(ClassFilter2);
        //Attach filter in component
        MetabaseOpenDialog1.Filters.AddFilter(CombiFilter);
        MetabaseOpenDialog1.Execute(Self);
    End Sub Button1OnClick;

After executing this example while pressing the button a combined filter by objects classes is installed for the MetabaseOpenDialog1 component. A combined filter includes two filters by custom classes of objects. Use the GetMetabaseObjectClass method to specify a custom class in a filter. After dialog initialization only objects of specified custom classes are available for the selection.