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ImageScannerFeederConfiguration.ContrastStep | contrastStep property

Applies to Windows only

Gets the step size at which the contrast levels of the data source can increase or decrease between the minimum and maximum values.

Syntax


var contrastStep = imageScannerFeederConfiguration.contrastStep;

Property value

Type: Number [JavaScript] | System.UInt32 [.NET] | uint32 [C++]

The step size to increment or decrement. The typical value is 1.

Remarks

If the scanner doesn't allow contrast changes, then the MinContrast, MaxContrast and DefaultContrast are set to the same value-oftentimes 0, and the ContrastStep value is set to 0. Your app can determine if the scan source doesn't support contrast adjustments by reading the ContrastStep value. If the value is greater than 0, then the scan source supports contrast adjustments.

Requirements

Minimum supported client

Windows 8.1

Minimum supported server

Windows Server 2012 R2

Minimum supported phone

None supported

Namespace

Windows.Devices.Scanners
Windows::Devices::Scanners [C++]

Metadata

Windows.winmd

See also

ImageScannerFeederConfiguration

 

 

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