VideoPortInterlockedDecrement function (video.h)

Article
02/22/2024

The VideoPortInterlockedDecrement function decrements a caller-supplied variable as an atomic operation.

Syntax

VIDEOPORT_API LONG VideoPortInterlockedDecrement(
  [in] IN PLONG Addend
);

Parameters

[in] Addend

Pointer to the variable to be decremented.

Return value

VideoPortInterlockedDecrement returns the decremented value.

Remarks

When possible and whenever appropriate, VideoPortInterlockedDecrement is implemented inline by the compiler. It can be safely used on pageable data.

This function is atomic only with respect to other VideoPortInterlockedXxx calls.

Requirements

Requirement	Value
Minimum supported client	Available in Windows 2000 and later versions of the Windows operating systems.
Target Platform	Desktop
Header	video.h (include Video.h)
Library	Videoprt.lib
DLL	Videoprt.sys
IRQL	Any level