Adds a checkbox to a dialog window.
dlg_add_checkbox(handle, name, values, value, param)
hnd = dlg_new("My dialog"); dlg_add_checkbox(hnd, "My selection", "|", 0, "selection"); dlg_show(hnd); print("selection: ", selection);
hnd = dlg_new("Select origin"); dlg_add_checkbox(hnd, "Origin", "|None~|\ | |\~ |\ | ", 1, "myorig"); dlg_show(hnd); print("myorig: ", myorig);
hnd = dlg_new("Select Animal"); dlg_add_checkbox(hnd, "Animal", "|Bear|Birds, Bees|Alligator|Ox|Hummingbird|Rattlesnake", 1, "myanimal"); dlg_show(hnd); print("myanimal: ", myanimal);
hnd = dlg_new("Select Flower"); dlg_add_checkbox(hnd, "Flower", "|Rose~|Lilly, Wild~|Magnolia~|Tulip~|Oleander~|Daisy~", 1, "myflower"); dlg_show(hnd); print("myflower: ", myflower);
hnd = dlg_new("Select Planet"); dlg_add_checkbox(hnd, "Planet", "|Mercury|\Venus|\Earth|\Mars|\Jupiter|\Saturn|\Uranus|\Neptune", 1, "myplanet"); dlg_show(hnd); print("myplanet: ", myplanet);