DevHelp QueueInit

This service initializes the specified character queue structure.

C
USHORT APIENTRY DevHelp_QueueInit (NPBYTE Queue)

Assembler
 MOV  BX,OFFSET DS:queue      ; Points to the queue structure to be initialized. ; (The Qsize field must be set up.) MOV  DL,DevHlp_QueueInit

CALL [Device_Help] 

C

 * Queue (NPBYTE) : input - Near pointer to the queue structure to be initialized. (The Qsize field must be set up.)

Assembler
 MOV  BX,OFFSET DS:queue      ; Points to the queue structure to be initialized. ; (The Qsize field must be set up.) 

C
None.

Assembler
None.

Remarks
This function must be called before any other queue manipulation subroutine. Prior to this call, the physical device driver must allocate the character queue buffer with the following queue header:

type def struct_QUEUEHDR{ USHORT QSize; USHORT QChrOut; USHORT QCount; BYTE  Queue [1]; }QUEUEHDR;

The Qsize field should be initialized by the physical device driver before calling QueueInit.

C
 USHORT APIENTRY DevHelp_QueueInit (NPBYTE Queue)

typedef struct _QUEUEHDR {             /* DHQH */

USHORT  QSize; USHORT  QChrOut; USHORT  QCount; BYTE    Queue[1]; } QUEUEHDR;

typedef QUEUEHDR *PQUEUEHDR; 