LightPath Свойство (Device)

В этом разделе

Determines that the image was captured transmissively or reflectively.

Синтаксис

Visual Basic
C#
Управляемые расширения для C++
C++/CLI

'Declaration

Public Property LightPath As LightPath

public LightPath LightPath { get; set; }

public: __property LightPath get_LightPath();
public: __property void set_LightPath(
   LightPath value
);

public:
property LightPath LightPath {
   LightPath get();
   void set(LightPath value);
}

Исключения

Исключение	Описание
TwainInvalidStateException	Thrown if device is in wrong state.
TwainDeviceCapabilityException	Thrown if device does not support capability.
DebuggerException	Thrown if the .NET debugger is used and the function evaluation requires all threads to run.

Ремарки

Call this property only when device is opened (State == DeviceState.Opened).

Supported pixel types can be received by the GetSupportedLightPaths method.

Пример

This C#/VB.NET code shows how to scan negatives using a scanner.

VB.NET


Public Sub ScanColorImageWithLightPath(device As Vintasoft.Twain.Device)
    device.ShowUI = False
    device.DisableAfterAcquire = True

    device.Open()
    device.PixelType = Vintasoft.Twain.PixelType.RGB
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches
    device.Resolution = New Vintasoft.Twain.Resolution(300.0F, 300.0F)
    device.LightPath = Vintasoft.Twain.LightPath.Transmissive

    device.Acquire()
End Sub


public void ScanColorImageWithLightPath(Vintasoft.Twain.Device device)
{
    device.ShowUI = false;
    device.DisableAfterAcquire = true;

    device.Open();
    device.PixelType = Vintasoft.Twain.PixelType.RGB;
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches;
    device.Resolution = new Vintasoft.Twain.Resolution(300f, 300f);
    device.LightPath = Vintasoft.Twain.LightPath.Transmissive;

    device.Acquire();
}

Требования

Целевые платформы: .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Смотрите также

Справочник

Device Class
Члены типа Device

GetSupportedLightPaths
LampState
LightSource
Open

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