LCDUI UI element icon support

The icon sizes for List, ChoiceGroup and Alert in different device resolutions are listed in the following table. These are default values and should be considered for informative purposes only as these may differ even between devices with the same resolution.

You can get the device-specific maximum width and height for LIST_ELEMENT, CHOICE_GROUP_ELEMENT and ALERT image types by using the getBestImageWidth and getBestImageHeight methods.

**Table:** UI element sizes in Symbian devices
Device display resolution	List icon	ChoiceGroup icon	Alert icon
176x208	42x29	16x16	30x40
208x176	42x29	16x16	30x40
QVGA (240x320 & 320x240)	57x41	21x21	40x53
QVGA2 (240x320 & 320x240)	49x35	18x18	35x46
352x416	84x58	32x32	60x80
416x352	84x58	32x32	60x80
nHD (360x640 & 640x360)	66x47	27x27	51x68

Series 40 devices include the following screen sizes:

**Table:** UI element sizes in Series 40 devices
Device display resolution	List icon	ChoiceGroup icon	Alert icon
128x128	16x16	12x12	21x36
128x160	16x16	12x12	21x36
208x208	26x26	22x22	40x50
240x320	28x28	22x22	58x76
320x480	36x48	34x46	58x58

In Symbian devices the screen layouts used with Lists are determined by the following parameters:

Whether there is a selection graphic (EXCLUSIVE, MULTIPLE) or not (IMPLICIT);
Whether the text needs one or two lines (List.TEXT_WRAP_OFF / List.TEXT_WRAP_ON).

Depending on these three parameters, List items might use a smaller or larger space. If a smaller space is required, the LIST_ELEMENT icon is replaced by the corresponding CHOICE_GROUP_ELEMENT icon.