### IDirectDraw2::GetFourCCCodes

The IDirectDraw2::GetFourCCCodes method retrieves the FOURCC codes supported by the DirectDraw object. This method can also retrieve the number of codes supported.

HRESULT GetFourCCCodes(

LPDWORD lpNumCodes,

LPDWORD lpCodes

);

##### Parameters

lpNumCodes
  Address of a variable that contains the number of entries that the array pointed to by lpCodes can hold. If the number of entries is too small to accommodate all the codes, lpNumCodes is set to the required number and the array pointed to by lpCodes is filled with all that fits.
lpCodes
  Address of an array of variables that will be filled with FOURCC codes supported by this DirectDraw object. If you specify NULL, lpNumCodes is set to the number of supported FOURCC codes and the method will return.

##### Return Values

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values:

DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS