WIA_IPS_CONTRAST
The WIA_IPS_CONTRAST property contains the current hardware contrast setting for a device.
Property Type: VT_I4
Valid Values: WIA_PROP_RANGE
Access Rights: Read/write
Remarks
An application sets the WIA_IPS_CONTRAST property to the hardware's contrast value. The WIA minidriver creates and maintains this property.
Values for WIA_IPS_CONTRAST should be mapped in a range from −1000 through 1000, where −1000 corresponds to the minimum contrast, 0 corresponds to normal contrast, and 1000 corresponds to the maximum contrast.
WIA_IPS_CONTRAST is required for all image acquisition items.
Requirements
Header: wiadef.h (include Wiadef.h)
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