DDTRANSFERININFO structure (dxmini.h)
The DDTRANSFERININFO structure contains the transfer information for the surface
Syntax
typedef struct _DDTRANSFERININFO {
LPDDSURFACEDATA lpSurfaceData;
DWORD dwStartLine;
DWORD dwEndLine;
ULONG_PTR dwTransferID;
DWORD dwTransferFlags;
PMDL lpDestMDL;
} DDTRANSFERININFO, *PDDTRANSFERININFO;
Members
lpSurfaceData
Points to a DDSURFACEDATA structure that represents the surface that contains the information to be transferred. The information in this structure is supplied by DirectDraw.
dwStartLine
Indicates the first line in the surface from which data is transferred.
dwEndLine
Indicates the last line in the surface from which data is transferred, inclusive.
dwTransferID
Specifies an identification for the transfer supplied by DirectDraw. This transfer ID is used by the driver in the DDGETTRANSFERSTATUSOUTINFO structure.
dwTransferFlags
Indicates the type of transfer. One of the following:
| Flag | Meaning |
|---|---|
| DDTRANSFER_CANCEL | DirectDraw previously requested a transfer, but is now canceling that request. |
| DDTRANSFER_HALFLINES | Due to half line issues, the odd field contains an extra line of useless data at the top that the driver must account for. |
| DDTRANSFER_INVERT | During bus mastering, the capture driver is requesting an inversion. |
| DDTRANSFER_NONLOCALVIDMEM | The transfer is from display memory to AGP memory. |
| DDTRANSFER_SYSTEMMEMORY | The transfer is from display memory to system memory. |
lpDestMDL
Points to a destination memory descriptor list (MDL) structure.
Requirements
| Requirement | Value |
|---|---|
| Header | dxmini.h (include Dxmini.h) |