StylusQueue enumeration (rtscom.h)

Specifies the queue to which stylus data is added.

Syntax

typedef enum StylusQueue {
  SyncStylusQueue = 0x1,
  AsyncStylusQueueImmediate = 0x2,
  AsyncStylusQueue = 0x3
} ;

Constants

 
SyncStylusQueue
Value: 0x1
Data is added to the input queue. When data is added to the input queue, it is automatically added to the output queue.
AsyncStylusQueueImmediate
Value: 0x2
Data is added to the output queue. The data is added before any data currently being processed.
AsyncStylusQueue
Value: 0x3
Data is added to the output queue.

Remarks

After the packet data is processed by the synchronous plug-in, it is added to the output queue. The asynchronous plug-in extracts the data from the queue. The amount of data that can be held in the queue is based on the Pen Input Service internal queue and is limited to approximately 10 seconds worth of data. After the queue is full, all successive packets are lost. The queue is used only as a data store. You can process the data from the queue or add your customized data to the queue.

The input queue is an alternative input source for the RealTimeStylus Class object. The Pen Input Service is given priority when the RealTimeStylus Class object checks for the next packet data to process. The input queue can be used to send data to all plug-ins while the output queue is used to send data to asynchronous plug-ins only.

The packet data process flow is the following:

  1. The RealTimeStylus Class object sends packet data to the synchronous plug-ins.
  2. The RealTimeStylus Class object stores the processed packet data in the output queue.
  3. The RealTimeStylus Class object checks for pending packet data in the input queue. If there is pending packet data, that packet data is picked up and processed from step 1.
  4. The RealTimeStylus Class object checks for any pending packet data from the Pen Input Service. If there is pending packet data, it is picked up and processed from step 1.
  5. Repeat steps 3 and 4.

Requirements

   
Minimum supported client Windows XP Tablet PC Edition [desktop apps only]
Minimum supported server None supported
Header rtscom.h

See also

IStylusAsyncPlugin

IStylusSyncPlugin

RealTimeStylus Class

RealTimeStylus Reference