Keyboard Filter (Standard 8)
7/8/2014
Review the use, syntax, options, and parameters for the Embedded Lockdown Manager (ELM) Keyboard Filter in Windows Embedded 8 Standard (Standard 8).
You can configure Keyboard Filter on a Windows Embedded 8 Standard (Standard 8) device to suppress undesirable key presses or key combinations. Normally, a user can use certain Windows key combinations like Ctrl+Alt+Delete or Ctrl+Shift+Tab to alter the operation of a device by locking the screen or using task manager to close a running application. This may not be desirable if your device is intended for a dedicated purpose. However, you can use Keyboard Filter to suppress any key press or key combination that causes an undesirable system behavior.
Keyboard Filter works with both physical keyboards and the standard Windows touchscreen keyboards.
Commands
On this screen, you can use the following commands:
- Disable admin filter/Enable admin filter
Disables or enables the Keyboard Filter from blocking keys for administrator accounts on the device.
- Allow Accessibility/Force off Accessibility
Determines whether accessibility features that can bypass the Keyboard Filter are allowed.
Key Categories
Key combinations are grouped into the following categories:
Category |
Description |
|---|---|
Accessibility Keys |
Predefined Keys that affect accessibility options. |
Application Keys |
Predefined keys that affect application behavior. |
Browser Keys |
Predefined keys that affect internet browser functionality. |
Extended Shell Keys |
Predefined keys that initiate commonly used functionality, such as launch mail, launch media player, or sleep mode. |
Media Keys |
Predefined keys that access media player functionality. |
Modifier Keys |
Predefined keys that are commonly used as modifiers in a key combination. |
Security Keys |
Predefined keys that affect system security, such as Ctrl+Alt+Delete. |
Shell Keys |
Predefined keys that affect the behavior of the Windows shell. |
All Keys |
All predefined keys. |
Custom-defined keys. |
|
Custom-defined scan codes. |