ImageFilter Свойство (Device)

В этом разделе

Gets or sets the image filter for current scan session.

Синтаксис

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

'Declaration

Public Property ImageFilter As ImageFilter

public ImageFilter ImageFilter { get; set; }

public: __property ImageFilter get_ImageFilter();
public: __property void set_ImageFilter(
   ImageFilter value
);

public:
property ImageFilter ImageFilter {
   ImageFilter get();
   void set(ImageFilter 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 GetSupportedImageFilters method.

Пример

This C#/VB.NET code shows how to apply Green filter to images acquired from the device.

VB.NET


Public Sub ScanColorImageWithImageFilter(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.ImageFilter = Vintasoft.Twain.ImageFilter.Green

    device.Acquire()
End Sub


public void ScanColorImageWithImageFilter(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.ImageFilter = Vintasoft.Twain.ImageFilter.Green;

    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

GetSupportedImageFilters
Open

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