| UID | title | description | old-location | tech.root | ms.date | keywords | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | f1_keywords | topic_type | api_type | api_location | api_name | ||||||||
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NF:video.VideoPortReadRegisterBufferUlong |
VideoPortReadRegisterBufferUlong function (video.h) |
The VideoPortReadRegisterBufferUlong function reads a number of ULONG values from a mapped device memory range and writes them into a buffer. |
display\videoportreadregisterbufferulong.htm |
display |
05/10/2018 |
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VideoPortReadRegisterBufferUlong, VideoPortReadRegisterBufferUlong function [Display Devices], VideoPort_Functions_69ff5729-b386-4527-8bca-adc70e2d467d.xml, display.videoportreadregisterbufferulong, video/VideoPortReadRegisterBufferUlong |
video.h |
Video.h |
Desktop |
Available in Windows 2000 and later versions of the Windows operating systems. |
Videoprt.lib |
Videoprt.sys |
See Remarks section. |
Windows |
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The VideoPortReadRegisterBufferUlong function reads a number of ULONG values from a mapped device memory range and writes them into a buffer.
Pointer to the register. The given Register must be in a mapped memory-space range returned by VideoPortGetDeviceBase.
Pointer to a buffer into which the ULONG values are written.
Specifies the number of ULONG values to be written to the buffer.
None
The buffer must be large enough to contain at least the specified number of ULONG values.
A miniport driver's HwVidInterrupt or HwVidSynchronizeExecutionCallback function can call VideoPortReadRegisterBufferUlong.
Callers of VideoPortReadRegisterBufferUlong can be running at any IRQL, provided that the memory pointed to by the Buffer parameter is resident and that pointed to by the Register parameter is resident, mapped device memory.