In MIDP 2.1, the POPUP type is usable only in ChoiceGroup.
When the element is selected in a POPUP ChoiceGroup,
the list is closed and the selected element is visible inline in the Form.
A ChoiceGroup element has only one line of text
regardless of the fit
policy.
The size (small, medium, large) and style (STYLE_PLAIN, STYLE_BOLD, STYLE_ITALIC, STYLE_UNDERLINED, and combinations
of them) of Fonts can not be modified.
From S60 5th Edition onwards, font sizes can be edited with DirectUtils.getFont method in Nokia
UI API.
A ChoiceGroup element has only one line of text
regardless of the fit
policy.
When a POPUP ChoiceGroup is opened, it is displayed
as an IMPLICIT List. Any Item Commands
available on the POPUP ChoiceGroup are not carried over
into the opened ChoiceGroup list. These Commands
are only available in the Form.
If a Command is added or removed after the Commands
for a displayable have been presented to the user, all the Commands
are mapped again based on the rules presented in the previous sections. This
may update the softkeys and Command list items even when
they are visible.
For every ChoiceGroup element type, pressing the # key
opens a separate screen displaying the selected choice element’s text in its
entirety.
If a MIDlet displays a ChoiceGroup that has no
elements but has Item Commands, the string empty is
displayed.
If the ChoiceGroup has an image element and if
it is larger than the space allocated for it, it is cropped from its right
and bottom edges in order to fit within the space. If the image element is
smaller than the space allocated, it is centered within the space provided.
When a MULTIPLE or EXCLUSIVE type ChoiceGroup element
is displayed on the screen, pressing the Send key on the device causes
the choice element in focus to be selected if it was not selected before,
or is ignored if the element was already selected.
When a POPUP type ChoiceGroup element
is displayed on the screen, pressing the Send key on the device opens
the ChoiceGroup to display all choice elements, in the
style of an IMPLICIT list.
Only plain, bold and italic font styles are supported in ChoiceGroups
and Lists. Underlined and combination styles are not
supported.