Version 5.0 The LEDA User Manual

int
GW.set limit(GeoEditScene ∗ es, int limit)
sets the limit of edit scene es to limit and returns the
previous value.
The templated add user call operation uses member templates. If your compiler
does not support member templates, you should use instead the templated function
geowin add user call with GW as an additional first parameter.
template
void GW.add user call(string label, F f)
adds a menu item label to the ”User” menu of GW .
The user defined function void geo call(GeoWin&,
F, string) is called whenever this menu button was
pressed with parameters GW , f and label. This menu
definition has to be finished before GW is opened.
Import- and export objects can be used to import and export the contents of scenes in
various formats.
The classes geowin import and geowin export are used for implementing import- and export
objects. The classes geowin import and geowin export have virtual ( ) - operators:
virtual void operator( )(geo scene sc, string filename)
This virtual operator can be overwritten in derived classes to provide import and export
functionality for own formats. The first parameter is the scene sc that will be used as
source for the output or target for the input. The second parameter filename is the name
of the input (import objects) or output (export objects) file.
void
void
GW.add import object(geo scene sc, geowin import& io, string name,
string desc)
Adds an import object io to scene sc. The import
object gets the name name and the description desc.
GW.add export object(geo scene sc, geowin export& eo, string name,
string desc)
Adds an export object eo to scene sc. The export
object gets the name name and the description desc.
4. Non-Member Functions
GeoWin∗
get geowin(geo scene sc)
returns a pointer to the GeoWin of sc.
template
bool get objects(geo scene sc, CONTAINER& c)
If the contents of scene sc matches type
CONTAINER, then the contents of scene sc is
copied to c.