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IDeviceSpecificProperty::Get4BRange

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IDeviceSpecificProperty::Get4BRange

The Get4BRange method gets the 4-byte range of the device-specific property value.

HRESULT Get4BRange(
  LONG  *plMin,
  LONG  *plMax,
  LONG  *plStepping
);

Parameters

plMin

[out]  Pointer to a LONG variable into which the method writes the minimum property value.

plMax

[out]  Pointer to a LONG variable into which the method writes the maximum property value.

plStepping

[out]  Pointer to a LONG variable into which the method writes the stepping value between consecutive property values in the range *plMin to *plMax. If the difference between the maximum and minimum property values is d, and the range is divided into n steps (uniformly sized intervals), then the property can take *n *+ 1 discrete values and the size of the step between consecutive values is *d */ n.

Return Value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
E_POINTER Pointer plMin, plMax, or plStepping is NULL.
HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED) The property value is not a 32-bit signed or unsigned integer.

For information about the HRESULT_FROM_WIN32 macro, see the Windows SDK documentation.

Remarks

This method reports the range and step size for a property value that is a 32-bit signed or unsigned integer. These two data types are represented by VARENUM enumeration constants VT_I4 and VT_UI4, respectively. If the property value is not a 32-bit integer, then the method returns an error status code. For more information about VARENUM, see the Windows SDK documentation.

Requirements

Client: Windows Vista

Header: Include Devicetopology.h.

See Also

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