If its your company that produced the control then get them to expose it properly.
If not then you will have to use, if available, keyboard shortcuts to navigate up and down. Unfortunatly this will be done blind.
e.g. You will have to assume that 'down', 'down', 'enter' will select the context menu you want. Or you may be lucky and be able to press the corosponding short key like in normal menus.
If not then you will have to use, if available, keyboard shortcuts to navigate up and down. Unfortunatly this will be done blind.
e.g. You will have to assume that 'down', 'down', 'enter' will select the context menu you want. Or you may be lucky and be able to press the corosponding short key like in normal menus.