wiasReadPropFloat - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// wiamdef.h

HRESULT wiasReadPropFloat(
  [in]            BYTE   *pWiasContext,
                  PROPID propid,
  [out]           FLOAT  *pfVal,
  [out, optional] FLOAT  *pfValOld,
                  BOOL   bMustExist
);
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (nf-wiamdef-wiasreadpropfloat)

wiasReadPropFloat function

Description

The wiasReadPropFloat function retrieves a floating-point property value from a WIA item.

Parameters

pWiasContext [in]

Pointer to a WIA item context.

propid

Specifies the property identifier.

pfVal [out]

Pointer to a memory location that receives the floating-point value of the property.

pfValOld [out, optional]

Pointer to a memory location that receives the former floating-point value of the property. If this information is not needed, set this parameter to NULL.

bMustExist

Indicates whether the property must exist. If set to TRUE, the property must exist; if set to FALSE, it does not have to exist.

Return value

On success, the function returns S_OK. If the function fails, it returns a standard COM error or one of the WIA_ERROR_XXX errors (described in the Microsoft Windows SDK documentation).

See also

wiasReadPropBin

wiasReadPropGuid

wiasReadPropLong

wiasReadPropStr

wiasWritePropFloat

View the official Windows Driver Kit DDI reference

Edit description on GitHub