VintaSoft Twain .NET SDK 15.4: Documentation for Web developer
Vintasoft.Twain Namespace / WebTwainDeviceJS type / set_Contrast Property
Syntax Exceptions Remarks BrowserCompatibility SeeAlso
In This Topic
set_Contrast Method
In This Topic
Sets contrast of gray/palette/color images for current scan session for TWAIN/WIA/SANE/eSCL device.
Syntax
var instance = new Vintasoft.Twain.WebTwainDeviceJS(deviceName, productFamily, manufacturer, driverVersion, twainVersion, deviceManager, is64Bit);

var returnValue; // Type: any

// Parameters
var value; // Type: number

returnValue = instance.set_Contrast(value);

Parameters

value
The contrast of gray/palette/color images for current scan session.
Exceptions
ExceptionDescription
Thrown if device is not opened OR error occurs during setting value of device capability.
Remarks

This property sends a synchronous request to set value of WebTwainDeviceCapabilityIdEnumJS.IContrast capability. If you want to use asynchronous request instead of synchronous request, please set value of WebTwainDeviceCapabilityIdEnumJS.IContrast capability using WebTwainDeviceJS.setCapabilityAsync or WebTwainDeviceJS.setCapabilitiesAsync function.

Browser Compatibility
9
See Also

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members

 

 

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