wiauSetImageItemSize function (wiautil.h)

Artikel
02/22/2024

The wiauSetImageItemSize function calculates the size and width, in bytes, for an image, based on the current WIA_IPA_FORMAT setting (described in the Microsoft Windows SDK documentation), and writes the new values to the appropriate properties.

Syntax

HRESULT wiauSetImageItemSize(
  [in]           BYTE  *pWiasContext,
                 LONG  lWidth,
                 LONG  lHeight,
                 LONG  lDepth,
                 LONG  lSize,
  [in, optional] PWSTR pwszExt
);

Parameters

[in] pWiasContext

Pointer to a WIA item context.

lWidth

Specifies the width of the image, in pixels.

lHeight

Specifies the height of the image, in pixels.

lDepth

Specifies the depth of the image, in bits.

lSize

Specifies the size of the image as stored on the device.

[in, optional] pwszExt

Optional. Pointer to a memory location containing a three-character file name extension for the item's native format. If this parameter is NULL, the item's extension property, WIA_IPA_FILENAME_EXTENSION (described in the Windows SDK documentation), is not updated.

Return value

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

Remarks

If the format is not BMP, this function assumes that the value passed in the lSize parameter is correct for the current format.

Requirements

Requirement	Value
Target Platform	Desktop
Header	wiautil.h (include Wiautil.h)

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