Measurement-computing ADLIB WIN Uživatelský manuál stáhnout pdf (Strana 122)

Chapter 40 Buffer Handler Functions

27-2

27.2 AL_GetDoneBuffPtr

Prototype C\C++

LPBUFFSTRUCT AL_GetDoneBuffPtr(LHLD lhld);

Visual Basic for Windows

Not supported

LHLD lhld handle of the LDSD

The AL_GetDoneBuffPtr function retrieves a buffer pointer from the LDSD FIFO. Buffers are placed

into the FIFO and are returned by AL_GetDoneBuffPtr as a first done, first returned ordering. See section

6.3 THE BUFFER STRUCTURE for additional details.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

Returns:

On success LPBUFFSTRUCT points to the current buffer, otherwise LPBUFFSTRUCT is set to NULL

indicating no buffers are available. The LPBUFFSTRUCT is a structure defined in adlib.h that contains a

pointer to the buffer and current status information of the buffer. See the Memory Buffer Allocation

chapter for a complete description of buffer handling concepts and the LPBUFFSTRUCT structure details.

Related Functions:

AL_ClearBufferDoneFlag

AL_GetBufferStatus

Supported Logical Device Subsystems:

Pci55xx Series: ADC0, DAC0, DAC1

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Measurement-computing ADLIB WIN Uživatelský manuál Strana 122