VintaSoft Twain .NET SDK v10.2
AutoBright Property (Device)
Example 




Vintasoft.Twain Namespace > Device Class : AutoBright Property
Determines that brightness should be automatically detected.
Syntax
'Declaration
 
Public Property AutoBright As Boolean
'Usage
 
Dim instance As Device
Dim value As Boolean
 
instance.AutoBright = value
 
value = instance.AutoBright
public bool AutoBright {get; set;}
public: __property bool get_AutoBright();
public: __property void set_AutoBright( 
   bool value
);
public:
property bool AutoBright {
   bool get();
   void set (    bool value);
}
Exceptions
ExceptionDescription
Thrown if device is in wrong state.
Thrown if device does not support capability.
Thrown if the .NET debugger is used and the function evaluation requires all threads to run.
Remarks
Call this property only when device is opened (State == DeviceState.Opened).

This property has effect only if you do not use User Interface (ShowUI=False).

This property has effect only for gray/palette/color images. Threshold property must be used for black-white images.
Example
This example shows how to adjust brightness/contrast and acquire color images from the device.
Public Sub ScanColorImageWithAutoBright(ByVal device As Device)
    device.ShowUI = False
    device.DisableAfterAcquire = True
            
    device.Open()
    device.PixelType = PixelType.RGB
    device.UnitOfMeasure = UnitOfMeasure.Inches
    device.Resolution = New Resolution(300.0F, 300.0F)
    device.AutoBright = True
    device.Contrast = 0
            
    device.Acquire()
End Sub
public void ScanColorImageWithAutoBright(Device device)
{
    device.ShowUI = false;
    device.DisableAfterAcquire = true;
            
    device.Open();
    device.PixelType = PixelType.RGB;
    device.UnitOfMeasure = UnitOfMeasure.Inches;
    device.Resolution = new Resolution(300f, 300f);
    device.AutoBright = true;
    device.Contrast = 0;
            
    device.Acquire();
}
Requirements

Target Platforms: Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2012, Windows Server 2008, Windows Server 2003

See Also

Reference

Device Class
Device Members
Brightness Property
GetSupportedBrightnessValues Method
Open Method
Threshold Property