VintaSoft Twain .NET SDK v10.2
Vintasoft.Twain Namespace / Device Class / AutoBright Property
Example




In This Topic
    AutoBright Property (Device)
    In This Topic
    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