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PosKeyboardBase.KeyUp Method

  • Article

2/27/2008

If true, the keyboard device is able to generate both key-down and key-up input data, based on the value of the EventTypes property.

Namespace: Microsoft.PointOfService.BaseServiceObjects
Assembly: Microsoft.PointOfService.ControlBase (in microsoft.pointofservice.controlbase.dll)

Syntax

'Declaration
Protected Sub KeyUp ( _
    keyData As Integer _
)

protected void KeyUp (
    int keyData
)

protected:
void KeyUp (
    int keyData
)

protected void KeyUp (
    int keyData
)

protected function KeyUp (
    keyData : int
)

Parameters

  • keyData
    The keyData parameter contains the value of the key pressed, defined as a logical key code in the upper 16 bits and a scan code in the lower 16 bits, where the values need not match a standard PC keyboard's values.

Remarks

If the application wants to receive key-up data, the service object calls KeyUp when the user releases a key (which typically generates a hardware interrupt). The PosKeyboardBase class implementation of KeyUp queues a data event to the application.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread-safe. Any instance members are not guaranteed to be thread-safe.

See Also

Reference

PosKeyboardBase Class
PosKeyboardBase Members
Microsoft.PointOfService.BaseServiceObjects Namespace