typedef struct {
DWORD dwFlags;
LPBITMAPINFOHEADER lpbiSrc;
LPVOID lpSrc;
LPBITMAPINFOHEADER lpbiDst;
LPVOID lpDst;
int xDst;
int yDst;
int dxDst;
int dyDst;
int xSrc;
int ySrc;
int dxSrc;
int dySrc;
} ICDECOMPRESSEX;
The ICDECOMPRESSEX structure is used with the ICM_DECOMPRESSEX message to specify the parameters for decompressing the data.
Members
dwFlags
Specifies applicable flags. The following flags are defined:
| Flag | Meaning |
| ICDECOMPRESS_HURRYUP | Indicates the data is just buffered and not drawn to the screen. Use this flag for the fastest decompression. |
| ICDECOMPRESS_UPDATE | Indicates the screen is being updated. |
| ICDECOMPRESS_PREROLL | Indicates this frame will not actually be drawn, because it is before the point in the movie where play will start. |
| ICDECOMPRESS_NULLFRAME | Indicates this frame does not have any data, and the decompressed image should be left the same. |
| ICDECOMPRESS_NOTKEYFRAME | Indicates that this frame is not a key frame. |
lpbiSrc
Specifies a pointer to a BITMAPINFOHEADER structure containing the input format.
lpSrc
Specifies a pointer to a data buffer containing the input data.
lpbiDst
Specifies a pointer to a BITMAPINFOHEADER structure containing the output format.
lpDst
Specifies a pointer to a data buffer where the driver should write the decompressed image.
xDst
Specifies the x-coordinate of the destination rectangle within the DIB specified by lpbiDst.
yDst
Specifies the y-coordinate of the destination rectangle.
dxDst
Specifies the width of the destination rectangle.
dyDst
Specifies the height of the destination rectangle.
xSrc
Specifies the x-coordinate of the source rectangle, within the DIB specified by lpbiSrc.
ySrc
Specifies the y-coordinate of the source rectangle.
dxSrc
Specifies the width of the source rectangle.
dySrc
Specifies the height of the source rectangle.