If radio button is already in unchecked state, then this function will check (set) it.
Refer: http://webcvs.freedesktop.org/ldtp/ldtp/src/radio-button.c
If check box is already in unchecked state, then this function will check (set) it.
Refer: http://webcvs.freedesktop.org/ldtp/ldtp/src/check-box.c
Refer: http://webcvs.freedesktop.org/ldtp/ldtp/src/push-button.c
Refer: http://webcvs.freedesktop.org/ldtp/ldtp/src/toggle-button.c
Refer: http://webcvs.freedesktop.org/ldtp/ldtp/src/combo-box.c
click ('dlgOpen', 'btnOpen')
For Check box, Check menu item, on doing this action, the state will be toggled.
For Radio button, Radio menu item, if they are not already selected, they are selected, otherwise silently ignored.