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




In This Topic
    UnitOfMeasure Property (Device)
    In This Topic
    Gets or sets the unit of measure for current scan session.
    Syntax
    'Declaration
     
    Public Property UnitOfMeasure As UnitOfMeasure
    'Usage
     
    Dim instance As Device
    Dim value As UnitOfMeasure
     
    instance.UnitOfMeasure = value
     
    value = instance.UnitOfMeasure
    public UnitOfMeasure UnitOfMeasure {get; set;}
    public: __property UnitOfMeasure get_UnitOfMeasure();
    public: __property void set_UnitOfMeasure( 
       UnitOfMeasure value
    );
    public:
    property UnitOfMeasure UnitOfMeasure {
       UnitOfMeasure get();
       void set (    UnitOfMeasure 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).

    Supported pages sizes can be received by the GetSupportedUnitsOfMeasure method.

    This property has effect only if you do not use User Interface (ShowUI=False).
    Example
    This example shows how to acquire part of color image with 200 dpi from the device.
    Public Sub ScanColorImage(ByVal device As Device)
        device.ShowUI = False
        device.ShowIndicators = False
        device.DisableAfterAcquire = True
                
        device.Open()
        device.PixelType = PixelType.RGB
        device.UnitOfMeasure = UnitOfMeasure.Inches
        device.Resolution = New Resolution(200.0F, 200.0F)
        device.ImageLayout.[Set](1.0F, 1.0F, 5.0F, 5.0F)
                
        device.Acquire()
    End Sub
    public void ScanColorImage(Device device)
    {
        device.ShowUI = false;
        device.ShowIndicators = false;
        device.DisableAfterAcquire = true;
                
        device.Open();
        device.PixelType = PixelType.RGB;
        device.UnitOfMeasure = UnitOfMeasure.Inches;
        device.Resolution = new Resolution(200f, 200f);
        device.ImageLayout.Set(1f, 1f, 5f, 5f);
                
        device.Acquire();
    }
    Requirements

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

    See Also