IBasicBitmapOps::AdjustBrightness

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Windows Embedded CE 6.0 R3

4/8/2010

This method adjusts the brightness of a bitmap image.

Syntax

HRESULT AdjustBrightness(
  FLOAT percent
);

Parameters

• percent
  [in] A FLOAT value used to adjust the brightness of a bitmap image.

  The value for percent must fall in the range -1 <= percent <= 1.

  The pixel intensity value is between 0.0 and 1.0, so the brightness adjustment is described by the following equation.

  New Intensity = Old Intensity + percent
  

  A positive value of the percent parameter causes the image to become brighter; a negative value makes the image darker.

Return Value

This method returns S_OK if successful.

This method returns E_INVALIDARG if percent < -1, or if percent > 1.

Requirements

See Also

Reference

IBasicBitmapOps