PixelType Свойство (Device)

В этом разделе

Gets or sets the pixel type of images for current scan session.

Синтаксис

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

'Declaration

Public Property PixelType As PixelType

public PixelType PixelType { get; set; }

public: __property PixelType get_PixelType();
public: __property void set_PixelType(
   PixelType value
);

public:
property PixelType PixelType {
   PixelType get();
   void set(PixelType 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 GetSupportedPixelTypes method.

Пример

This C#/VB.NET code shows how to acquire part of color image with 200 dpi from the device.

VB.NET


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

    device.Open()
    device.PixelType = Vintasoft.Twain.PixelType.RGB
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches
    device.Resolution = New Vintasoft.Twain.Resolution(200.0F, 200.0F)
    device.ImageLayout.[Set](1.0F, 1.0F, 5.0F, 5.0F)

    device.Acquire()
End Sub


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

    device.Open();
    device.PixelType = Vintasoft.Twain.PixelType.RGB;
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches;
    device.Resolution = new Vintasoft.Twain.Resolution(200f, 200f);
    device.ImageLayout.Set(1f, 1f, 5f, 5f);

    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

BitDepth
GetSupportedPixelTypes
Open
PixelFlavor

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