Using Function Keys

Use

A function key allows you to trigger an action using a specific key on the mobile device.

Prerequisites

You have created a mobile application.

Procedure

  1. Navigate to the view on the Handhelds UI Explorer tab page.

  2. Choose the Layout tab page.

  3. From the Integration menu, drag and drop the FunctionKey onto the layout.

  4. On the Properties tab page, enter the keyCode .

  5. Specify or create the event to be invoked in the onAction property.

Supported Function Key Codes

You can use the key constants as outlined in the table below:

Function Key

Key Constant

F1

f1

F2

f2

F3

f3

F4

f4

F5

f5

F6

f6

F7

f7

F8

f8

F9

f9

F10

f10

F11

f11

F12

f12

F13

f13

F14

f14

F15

f15

Home

home

Delete

delete

End

end

Page Up

pageup

Page Down

pagedown

Caps Lock

caps

Cancel

cancel

Enter

enter

Backspace

backspace

You can use the key codes prefixed with # as outlined in the table below:

Function Key

Key Code

Tab

9

16777217

16777218

16777219

16777220

Central Navigation Key

13

0

48

1

49

2

50

3

51

4

52

5

53

6

54

7

55

8

56

9

57

a

97

b

98

c

99

d

100

e

101

f

102

g

103

h

104

i

105

j

106

k

107

l

108

m

109

n

110

o

111

p

112

q

113

r

114

s

115

t

116

u

117

v

118

w

119

x

120

y

121

z

122

Modifiers

You can use modifiers for combination of keys.

Modifier

Key Constant

Shift

shift

Ctrl

ctrl

Alt

alt

Usage

You can use key codes and constants in any of the following ways:

  • For single function keys, use:

    <Key constant> or #<Key code>

  • For multiple function keys and modifiers, use:

    <Modifier>&<Key constant> or <Modifier>&#<Key code>

Example

  • To handle a single function key such as 'a', use #97 .

  • To handle a combination of modifier and function key such as 'shift' and 'a', use shift&#97 .

  • To handle a function key represented by a constant such as 'F1', use f1 ,