Family class is the base class for objects that are able
to handle a list of children. This is e.g. the case for
MUIs Menustrip, Menu and Menuitem objects.
Family class defines methods and attributes to
add and remove children, sort children, and transfer
children to other Family objects.
Group class and application class should also be a
subclass of Family class, but due to BOOPSI system
limitations, this is currently impossible. If the
future will allow more logical class trees, things
might change, but everything will be done in a
compatible manner.
Attribute Ver ISG Type
----------------------------------- --- --- --------------------
MUIA_Family_Child V8 I.. Object *
MUIA_Family_List V8 ..G struct MinList *
Method Ver
----------------------------------- ---
MUIM_Family_AddHead V8
MUIM_Family_AddTail V8
MUIM_Family_Insert V8
MUIM_Family_Remove V8
MUIM_Family_Sort V8
MUIM_Family_Transfer V8
NAME
MUIA_Family_Child -- (V8 ) [I..], Object *
FUNCTION
You supply a pointer to a previously created MUI object
here. This object will be added to family at family
creation time.
Of course you can specify any number of child objects,
limited only by available memory.
Normally, the value for a MUIA_Family_Child tag is
a direct call to another MUI_NewObject(), children
are generated "on the fly".
When a family is disposed, all of its children will also
get deleted. If you supply a NULL pointer as child,
the family object will fail and previously dispose all
valid children found in the taglist.
This behaviour makes it possible to generate a complete
family within one single (but long) MUI_NewObject()
call. Error checking is not necessary since every error,
even if it occurs in a very deep nesting level, will
cause the complete call to fail without leaving back
any previously created object.
NOTES
As a special case, MUIA_Group_Child is also recognized
and treated as MUIA_Family_Child.
SEE ALSO
MUIM_Family_AddTail, MUIM_Family_Insert,
MUIM_Family_AddHead, MUIA_Family_Remove
NAME
MUIA_Family_List -- (V8 ) [..G], struct MinList *
FUNCTION
Returns a pointer to a struct MinList which contains the children
of a family object. You must parse this list with
intuition.library/NextObject().
SEE ALSO
MUIA_Family_Child
NAME
MUIM_Family_AddHead (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_AddHead,Object *obj);
FUNCTION
Add an object as first object to the family.
Subclasses of family class usually define which
types of objects are possible within their family.
INPUTS
obj - the object to be added.
SEE ALSO
MUIM_Family_AddTail, MUIM_Family_Insert,
MUIM_Family_Remove, MUIA_Family_Child
NAME
MUIM_Family_AddTail (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_AddTail,Object *obj);
FUNCTION
Add an object as last object to the family.
Subclasses of family class usually define which
types of objects are possible within their family.
This method does the same as OM_ADDMEMBER.
INPUTS
obj - the object to be added.
SEE ALSO
MUIM_Family_AddHead, MUIM_Family_Insert,
MUIM_Family_Remove, MUIA_Family_Child
NAME
MUIM_Family_Insert (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_Insert,Object *obj, Object *pred);
FUNCTION
Add an object after another object to the family.
Subclasses of family class usually define which
types of objects are possible within their family.
INPUTS
obj - the object to be added.
pred - the new object is inserted *after* this
object. pred must of course be a member
of the family.
SEE ALSO
MUIM_Family_AddTail, MUIM_Family_AddHead,
MUIM_Family_Remove, MUIA_Family_Child
NAME
MUIM_Family_Remove (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_Remove,Object *obj);
FUNCTION
Remove an object from a family.
This method does the same as OM_REMMEMBER.
INPUTS
obj - the object to be removed.
SEE ALSO
MUIM_Family_AddTail, MUIM_Family_Insert,
MUIM_Family_AddHead, MUIA_Family_Child
NAME
MUIM_Family_Sort (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_Sort,Object *obj[1]);
FUNCTION
Sort the children of a family.
INPUTS
child - array that contains *all* the children of the
family in the desired order. The array must be
terminated with a NULL entry.
SEE ALSO
MUIA_Family_Child
NAME
MUIM_Family_Transfer (V8 )
SYNOPSIS
DoMethod(obj,MUIM_Family_Transfer,Object *family);
FUNCTION
All the children of the family are removed and
added to another family in the same order.
INPUTS
family - the destination family.
SEE ALSO
MUIA_Family_Child
| © 1997, Stefan Stuntz | [MUI Homepage] [Autodoc Index] [Feedback] | Updated: 29-Mar-97 |