Cluster::Cluster

Section: ET++ method description (n)
Updated: automatically Thu Mar 21 20:11:29 1991
Index Return to Main Contents
 

NAME

Cluster::Cluster - instance method  

TEMPLATE

void Cluster(int id, VObjAlign align, Point gap, VObject * firstVObject, ellipsis ...)  

SPECIFIERS

public  

DESCRIPTION

This constructor is usually used when a complete VObject tree is created with a single statement.


For example: 

VObject *layout =
        new Cluster (cIdNone, eVObjHLeft, gPoint8,
                new BorderItem ("TextItems",
                        new Cluster (cIdNone, eVObjVBase, gPoint4,
                                new TextItem ("item1"),
                                new TextItem ("item1"),
                                NULL        // end of list of 2nd Cluster
                        )
                ),
                new Scroller (aView),
                NULL        // end of list of 1st Cluster
        );

 

ARGUMENTS

int id

the id of this
VObjAlign align

see instvar align
Point gap

see instvar minGap
VObject * firstVObject

the first one of the VObjects to be arranged by this
ellipsis ...

a NULL terminated list with the remaining VObjects to be arranged by this
 

RETURN ARGUMENT

void

 

CATEGORIES

client interface

 

FILES

implementation:
Cluster.C

 

NAME

Cluster::Cluster - instance method  

TEMPLATE

void Cluster(int id, VObjAlign align = eVObjVBase, Point gap = gPoint0, Collection * arrangedVObjects = NULL)  

SPECIFIERS

public  

DESCRIPTION

This constructor can be used if a collection of VObjects already exists or if the VObjects are added later.


For example: 

Collection *items = new OrdCollection;
items->Add (new TextItem ("item1"));
items->Add (new TextItem ("item2"));
Cluster *cl = new Cluster (cIdNone, eVObjHLeft, gPoint8, items);

// Adding the VObjects later:

Cluster *cl = new Cluster (cIdNone, eVObjHLeft, gPoint8, NULL);
cl->Add (new TextItem ("item1"));
cl->Add (new TextItem ("item2"));

 

ARGUMENTS

int id

the id of this
VObjAlign align = eVObjVBase

see instvar align
Point gap = gPoint0

see instvar minGap
Collection * arrangedVObjects = NULL

the VObjects to be arranged by this
 

RETURN ARGUMENT

void

 

CATEGORIES

client interface

 

FILES

implementation:
Cluster.C

 

NAME

Cluster::Cluster - instance method  

TEMPLATE

void Cluster(int id, VObjAlign align, Point gap, va_list arrangedVObjects)  

SPECIFIERS

public  

DESCRIPTION

This constructor can be used if a function or method gets a variable number of VObject arguments.


For example: 

// at least one non-VObject argument is required
// the macro "va_" hides machine dependencies

VObject *MyClass::DoMakeLayout (Point va_(gap), ...)
{
        va_list ap;
        va_start(ap, va_(gap));
        // "ap" now points to first VObject
        VObject *layout = new Cluster (cIdNone, eVObjHLeft, va_(gap), ap);
        va_end(ap);
        return layout; 
}

void MyClass::AnotherMethod()
{
        VObject *layout = DoMakeLayout (gPoint4,
                                        new TextItem("item1"),
                                        new TextItem("item2"),
                                        new TextItem("item3"),
                                        NULL);
}

 

ARGUMENTS

int id

the id of this
VObjAlign align

see instvar align
Point gap

see instvar minGap
va_list arrangedVObjects

refers to a NULL terminated list with the VObjects to be arranged by this
 

RETURN ARGUMENT

void

 

CATEGORIES

client interface

 

FILES

implementation:
Cluster.C

 

Index

NAME
TEMPLATE
SPECIFIERS
DESCRIPTION
ARGUMENTS
RETURN ARGUMENT
CATEGORIES
FILES
NAME
TEMPLATE
SPECIFIERS
DESCRIPTION
ARGUMENTS
RETURN ARGUMENT
CATEGORIES
FILES
NAME
TEMPLATE
SPECIFIERS
DESCRIPTION
ARGUMENTS
RETURN ARGUMENT
CATEGORIES
FILES
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