The IDirectDrawSurface Interface contains the following methods:
addAttachedSurface
addOverlayDirtyRect
blt
bltColorFill
bltFast
bltFx
copyBitmap
create3DDevice
deleteAttachedSurface
enumAttachedSurfaces
enumOverlayZOrders
flip
flush
getAttachedSurface
getBltStatus
getCaps
getClipper
getColorKey
getDC
getDDInterface
getFlipStatus
getOverlayPositionX
getOverlayPositionY
getPalette
getPixelFormat
getSurfaceDesc
isLost
lock
releaseDC
restore
setClipper
setColorKey
setOverlayPosition
setPalette
unlock
updateOverlay
updateOverlayDisplay
updateOverlayZOrder