Symbol mc9090g 用户指南

2 - 42 MC909X Mobile Computer User Guide

Application

These keys can be assigned to an application. 

F6 and F7 keys cannot be remapped and are dedicated by the Operating System to 
control volume level. When these keys are pressed, Shell.exe traps them and displays the 
volume adjustment window. To get these keys to an application, call GXOpenInput() at the 
beginning of the application and call GXCloseInput() at the end of the application. This 
redirects all of the key events to an application, including the F6 and F7 keys.

Note: Other applications cannot receive any key event until GXCloseInput() is called. For 
example, if the customer is using the APP1 key to run Calc.exe, this is disabled during 
this period.

Function (blue)

Press and release the blue function key to activate the keypad alternate functions (shown 

on the keypad in blue). The LED above the key lights and the 

 icon appears on the 

taskbar on WinCE devices or the 

 icon appears at the bottom of the screen on 

Windows Mobile 5.0 devices. Press and release the blue function key again to return to 
the normal keypad functions.

Control

Press and release the CTRL key to activate the keypad alternate CTRL functions. The 

LED above the key lights and the 

 icon appears on the taskbar on WinCE devices or 

the 

 icon appears at the bottom of the screen on Windows Mobile 5.0 devices.

Press the Blue key followed by the CTRL key to activate the keypad alternate ALT 

functions. The 

 icon appears on the taskbar on WinCE devices or the 

 icon 

appears at the bottom of the screen on Windows Mobile 5.0 devices.

Shift

Press and release the SHIFT key to activate the keypad alternate SHIFT functions. The 

 icon appears on the taskbar on WinCE devices or the 

 icon appears at the bottom 

of the screen on Windows Mobile 5.0 devices. Press and release the SHIFT key again to 
return to the normal keypad functions.

Period/Decimal Point 

Produces a period for alpha entries and decimal point for numeric entries.

Star Produces 

an 

asterisk.

Enter

Executes a selected item or function.

For Windows Mobile 5.0:

The default behavior of the RETURN key sends an extra character, which causes a 
Microsoft Word or Notes application to exit. To make the applications work properly, 
create an XML Provisioning file with the following entries:

Characteristic type =”HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\KEYBD”

Para name = “SpecialEnterTabKey” value = 0

Refer to the MC909X Integrator Guide for instruction on updating the registry using XML 
Provisioning.

LED

LED

ALT