UGL之透明位图

typedef struct ugl_bmap_header
    {
    UGL_UINT16 type;
    UGL_UINT16 width;
    UGL_UINT16 height;
    UGL_UINT16 maxWidth;
    UGL_UINT16 maxHeight;
    void      *extension; 
    } UGL_BMAP_HEADER;
typedef UGL_BMAP_HEADER UGL_TDDB;
typedef UGL_TDDB       *UGL_TDDB_ID;

UGL_TDDB_ID uglTransBitmapCreate
    (
    UGL_DEVICE_ID          devId, 
    UGL_DIB               *pDib,
    UGL_MDIB              *pMdib,
    UGL_DIB_CREATE_MODE    createMode,
    UGL_UINT32             initValue,
    UGL_DEVICE_MEM_POOL_ID poolId
    );
UGL_TDDB_ID uglTransBitmapCreateFromDDB
    (
    UGL_DEVICE_ID          devId, 
    UGL_DDB_ID             ddbId, 
    UGL_MDDB_ID            mDdbId,
    UGL_DEVICE_MEM_POOL_ID poolId
    );
UGL_STATUS uglTransBitmapDestroy
    (
    UGL_DEVICE_ID devId, 
    UGL_TDDB_ID   tDdbId
    );
UGL_STATUS uglTransBitmapRead
    (
    UGL_GC_ID   gc, 
    UGL_TDDB_ID tDdbId, 
    UGL_POS     srcLeft, 
    UGL_POS     srcTop,
    UGL_POS     srcRight, 
    UGL_POS     srcBottom,
    UGL_DIB    *pDib,  
    UGL_MDIB   *pMdib, 
    UGL_POS     dstX, 
    UGL_POS     dstY
    );
UGL_STATUS uglTransBitmapWrite
    (
    UGL_GC_ID   gc,
    UGL_DIB    *pDib,
    UGL_MDIB   *pMdib, 
    UGL_POS     srcLeft, 
    UGL_POS     srcTop,
    UGL_POS     srcRight, 
    UGL_POS     srcBottom,
    UGL_TDDB_ID tDdbId, 
    UGL_POS     dstX, 
    UGL_POS     dstY
    );
UGL_STATUS uglBitmapBlt
    (
    UGL_GC_ID     gc,
    UGL_BITMAP_ID srcBitmapId,
    UGL_POS       srcLeft,
    UGL_POS       srcTop,
    UGL_POS       srcRight,
    UGL_POS       srcBottom,
    UGL_DDB_ID    dstBitmapId,
    UGL_POS       dstX,
    UGL_POS       dstY
    );
UGL_STATUS uglBitmapStretchBlt 
    (
    UGL_GC_ID     gc,
    UGL_BITMAP_ID srcBitmapId,
    UGL_POS       srcLeft,
    UGL_POS       srcTop,
    UGL_POS       srcRight,
    UGL_POS       srcBottom,
    UGL_DDB_ID    dstBitmapId,
    UGL_POS       dstLeft,
    UGL_POS       dstTop,
    UGL_POS       dstRight,
    UGL_POS       dstBottom
    );