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




Vintasoft.WpfTwain Namespace > Device Class : UnitOfMeasure Property
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

Reference

Device Class
Device Members
GetSupportedUnitsOfMeasure Method
Open Method