Casio DT-X8 Series - Hand Strap Attachment Guide

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Enabling or Disabling Fn Key
For keys that perform specialized operations while the key input mode has been set to Function
mode, “Enable” or “Disable” can be set on each individual key in the registry below to control the
operations.
[HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\KEYBD]
Or, using the SysSetFnKeyOperation function of the System Library can achieve the same
control operation explained above.
Table 2.8
Key Setting Value Meaning
DisableFn9 dword: 0 or 1 Enable or Disable
DisableFn8 dword: 0 or 1 Enable or Disable
DisableFn7 dword: 0 or 1 Enable or Disable
DisableFn6 dword: 0 or 1 Enable or Disable
DisableFn5 dword: 0 or 1 Enable or Disable
DisableFn4 dword: 0 or 1 Enable or Disable
DisableFn3 dword: 0 or 1 Enable or Disable
DisableFn2 dword: 0 or 1 Enable or Disable
DisableFn1 dword: 0 or 1 Enable or Disable
DisableFn0 dword: 0 or 1 Enable or Disable
The functions of the System Library relevant to the “Enabling or Disabling Fn Key” are as
follows.
SysSetFnKeyOperation
: Sets up “Enable” or “Disable” for the Fn key operation.
SysGetFnKeyOperation
: Retrieves “Enable” or “Disable” status for the Fn key operation.
Function Mode Notification
When the Fn key is pressed, the WM_USER+0x502 message is issued to the application. This
enables the application to detect whether the Function mode has been set up enabled or disabled.