// wiautil.h

HRESULT wiauGetValidFormats(
  [in]  IWiaMiniDrv *pDrv,
  [in]  BYTE        *pWiasContext,
        LONG        TymedValue,
  [out] int         *pNumFormats,
  [out] GUID        **ppFormatArray
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-wiautil-wiaugetvalidformats)

wiauGetValidFormats function

Description

The wiauGetValidFormats function calls the IWiaMiniDrv::drvGetWiaFormatInfo method and makes a list of valid formats, using a specified tymed value.

Parameters

`pDrv` [in]

Points to the WIA minidriver object. This parameter should be set to this.

`pWiasContext` [in]

Pointer to a WIA item context.

`TymedValue`

Specifies the tymed value to search for.

`pNumFormats` [out]

Pointer to a memory location that receives the number of formats.

`ppFormatArray` [out]

Pointer to a memory location that receives the address of the array of format GUIDs.

Return value

On success, the function returns S_OK. If the function fails, it returns a standard COM error.

Remarks

The caller of this function is responsible for freeing the format array, using the delete[] operator.

View the official Windows Driver Kit DDI reference