gcf — Return handle of current graphic window.
h = gcf()
f=gcf(); // Create a figure
f.figure_size= [610,469]/2;
f.figure_name= "Foo";
f=figure(); // Create a figure
h=uicontrol(f,"style","listbox","position", [10 10 150 160]); // Create a listbox
set(h, "string", "item 1|item 2|item3");// fill the list
set(h, "value", [1 3]); // select item 1 and 3 in the list
gcf()
scf(0); // Make graphic window 0 the current figure
gcf() // Return the graphic handle of the current figure
figure(f) // Make window f the current figure
gcf() // Return the graphic handle of the current figure