VideoPortMoveMemory function (video.h)
The VideoPortMoveMemory function copies data from the source location to the destination location in system memory.
Syntax
VIDEOPORT_API VOID VideoPortMoveMemory(
[in, out] PVOID Destination,
[in, out] PVOID Source,
ULONG Length
);
Parameters
[in, out] Destination
Pointer to the destination location.
[in, out] Source
Pointer to the location of the data to copy.
Length
Specifies the number of bytes to copy.
Return value
None
Remarks
VideoPortMoveMemory moves memory either forward or backward, aligned or unaligned, in 4-byte blocks, followed by any remaining bytes.
The given Destination and Source must be in a mapped logical range returned by VideoPortGetDeviceBase and/or a system space RAM address, such as an address on the stack.
Callers of VideoPortMoveMemory can be running at any IRQL if both memory blocks are resident. Otherwise, the caller must be running at IRQL < DISPATCH_LEVEL.
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 | See Remarks section. |