Tablet Hardware button Assignment

Some Tablets integrate harware buttons. A callback function will be invoked when a hardware button is pressed. SignWare passes an identifyer for the hardware button that the application can respond appropriately.

The hardware button identifyers are internally assigned:

• StepOver blueM tablets:
  • 0: small button
  • 1: large button
• Verifone MX 800 tablets:
  • 0: virtual button OK
  • 1: virtual button Cancel
• SPTabletServer devices:
  • 0: button OK
  • 1: button Cancel
  • 2: button Repeat
  • 3: button Shutter
• SPTabletRemoteTablet devices:
  • 0: button OK
  • 1: button Cancel
  • 2: button Repeat

If the callback also passes a pressure value for the virtual button then the pressure will most likely equal the maximum pressure for the device (normalized maximum pressure: 1023).

Pressure values:

• StepOver blueM tablets:
  • always 1023
• Verifone MX 800 tablets:
  • always 1023
• SPTabletServer tablets:
  • always maximum pressure level

Please note that you may have to explicitly register a listener for hardware button events.

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