| Name | Description | |
|---|---|---|
 | WebTwainDeviceJS | Initializes a new instance of the WebTwainDeviceJS class. |
WebTwainDeviceJS Class Members
In This Topic
The following tables list the members exposed by WebTwainDeviceJS.
Public Constructors
Methods
| Name | Description | |
|---|---|---|
 | acquireModalAsync | Overloaded. Sends an asynchronous request to do one step of synchronous image acquisition from TWAIN/SANE device. Response for image acquisition progress is not generated. |
| acquireModalSync | Overloaded. Does one step of synchronous image acquisition from TWAIN/SANE device. |
| cancelTransfer | Sends an asynchronous request to cancel current image scanning process. |
| close | Closes TWAIN/SANE device. |
| closeAsync | Sends an asynchronous request to close TWAIN/SANE device. |
| get_AutoBright | Gets a value indicating whether the brightness should be automatically detected. |
| get_AutoScan | Gets a value indicating whether the device should capture the number of images indicated by the value of XferCount without waiting for the Application to request the image transfers. |
| get_BitDepth | Gets bit depth of images for current scan session. |
| get_BitDepthReductionMode | Gets bit depth reduction mode of images for current scan session. |
| get_Brightness | Gets brightness of gray/palette/color images for current scan session. |
| get_BufferedImageCount | Gets count of images in the device buffer. |
| get_Contrast | Gets contrast of gray/palette/color images for current scan session. |
| get_DeviceName | Gets the device name. |
| get_DocumentFeeder | Gets an object that allows to manipulate the document feeder of TWAIN device. |
| get_DriverVersion | Gets the version of device driver. |
| get_FileFormat | Gets file format for images when File transfer mode is used. |
| get_FileJpegQuality | Gets the JPEG quality for acquired images saved as JPEG files when File transfer mode is used. |
| get_Halftones | Gets halftones for bit depth reduction of images for current scan session. |
| get_HasFeeder | Gets a value indicating whether device has the automatic document feeder. |
| get_HasFlatbed | Gets a value indicating whether device has flatbed. |
| get_ImageCompression | Gets image compression for images when Memory or File transfer mode is used. |
| get_ImageFilter | Gets image filter for current scan session. |
| get_Is64Bit | Gets a value indicating whether device is 64-bit. |
| get_IsOpened | Gets a value indicating whether the device is opened. |
| get_IsTwain2Compatible | Gets a value indicating whether device is compatible with TWAIN 2. |
| get_IsWIA | Gets a value indicating whether the device is WIA device. |
| get_JobControl | Gets a value that defines how the batch job must be processed. |
| get_LampState | Gets a value indicating whether the lamp of device is on. |
| get_LightPath | Gets the light path, which must be used for the image capturing. |
| get_LightSource | Gets a value that defines general color characteristic of the light source for current scan session. |
| get_Manufacturer | Gets the device manufacturer. |
| get_MaxBatchBuffers | Gets number of images that the device can buffer when AutoScan is enabled. |
| get_NoiseFilter | Gets the noise filter for current scan session. |
| get_Online | Gets a value indicating whether the device is powered up and available. |
| get_PageAutoSize | Gets the page size detection mode for current scan session. |
| get_PageOrientation | Gets orientation of images for current scan session. |
| get_PageSize | Gets page size for current scan session. |
| get_PixelFlavor | Gets pixel flavor for current scan session. |
| get_PixelType | Gets pixel type of images for current scan session. |
| get_ProductFamily | Gets the device product family. |
| get_SaneResolution | Gets image resolution of SANE device. |
| get_SaneScanMode | Gets name of scan mode of SANE device. |
| get_SaneScanSource | Gets name of scan source of SANE device. |
| get_Threshold | Gets threshold of black-white images for current scan session. |
| get_TransferMode | Gets transfer mode for current scan session. |
| get_TwainVersion | Gets the TWAIN version supported by device. |
| get_UnitOfMeasure | Gets unit of measure for current scan session. |
| get_XferCount | Gets count of images application wants to receive from the device. |
| get_XResolution | Gets X-axis resolution of images for current scan session. |
| get_YResolution | Gets Y-axis resolution of images for current scan session. |
| getCapabilities | Overloaded. Returns information about TWAIN device capabilities. |
| getCapabilitiesAsync | Overloaded. Sends an asynchronous request to get values of TWAIN device capabilities. |
| getCapability | Overloaded. Returns information about TWAIN device capability. |
| getCapabilityAsync | Overloaded. Sends an asynchronous request to get value of TWAIN device capability. |
| getDefaultImageLayout | Returns information about the default image layout rectangle of TWAIN/SANE device. |
| getDefaultImageLayoutAsync | Sends an asynchronous request to get information about the default image layout rectangle of TWAIN/SANE device. |
| getImageLayout | Returns information about the current image layout rectangle of TWAIN/SANE device. |
| getImageLayoutAsync | Sends an asynchronous request to get information about the current image layout rectangle of TWAIN/SANE device. |
| getSupportedBitDepths | Returns supported bit depths. |
| getSupportedBrightnesValues | Returns supported brightness values. |
| getSupportedCapabilities | Overloaded. Returns information about all capabilities supported by TWAIN device. |
| getSupportedCapabilitiesAsync | Overloaded. Sends an asynchronous request to get information about all capabilities supported by TWAIN device. |
| getSupportedContrastValues | Returns supported contrast values. |
| getSupportedFileFormats | Returns supported file formats. |
| getSupportedImageCompressions | Returns supported image compressions. |
| getSupportedImageFilters | Returns supported image filters. |
| getSupportedPageOrientations | Returns supported page orientations. |
| getSupportedPageSizes | Returns supported page sizes. |
| getSupportedPixelFlavors | Returns supported pixel flavors. |
| getSupportedPixelTypes | Returns supported pixel types. |
| getSupportedSaneResolutions | Returns supported scan resolutions of opened SANE device. |
| getSupportedSaneScanModes | Returns supported scan modes of opened SANE device. |
| getSupportedSaneScanSources | Returns supported scan sources of opened SANE device. |
| getSupportedTransferModes | Returns supported transfer modes. |
| getSupportedUnitOfMeasures | Returns supported units of measure. |
| getSupportedXResolutions | Returns supported X-axis resolution for images. |
| getSupportedYResolutions | Returns supported Y-axis resolution for images. |
| open | Overloaded. Opens TWAIN/SANE device (device will show progress indicator during image scan process). |
| openAsync | Sends an asynchronous request to open TWAIN/SANE device. |
| resetImageLayout | Resets the image layout rectangle of TWAIN/SANE device. |
| resetImageLayoutAsync | Sends an asynchronous request to reset the image layout rectangle of TWAIN/SANE device. |
| set_AutoBright | Sets a value indicating whether the brightness should be automatically detected. |
| set_AutoScan | Sets a value indicating whether the device should capture the number of images indicated by the value of XferCount without waiting for the Application to request the image transfers. |
| set_BitDepth | Sets bit depth of images for current scan session. |
| set_BitDepthReductionMode | Sets bit depth reduction mode of images for current scan session. |
| set_Brightness | Sets brightness of gray/palette/color images for current scan session. |
| set_ClearBuffers | Sets a value that defines how device buffers must be cleared. |
| set_Contrast | Sets contrast of gray/palette/color images for current scan session. |
| set_FileFormat | Sets file format for images when File transfer mode is used. |
| set_FileJpegQuality | Sets the JPEG quality for acquired images saved as JPEG files when File transfer mode is used. |
| set_Halftones | Sets halftones for bit depth reduction of images for current scan session. |
| set_ImageCompression | Sets image compression for images when Memory or File transfer mode is used. |
| set_ImageFilter | Sets image filter for current scan session. |
| set_JobControl | Sets a value that defines how the batch job must be processed. |
| set_LampState | Sets a value indicating whether the lamp of device is on. |
| set_LightPath | Sets the light path, which must be used for the image capturing. |
| set_LightSource | Sets a value that defines general color characteristic of the light source for current scan session. |
| set_MaxBatchBuffers | Sets number of images that the device can buffer when AutoScan is enabled. |
| set_NoiseFilter | Sets the noise filter for current scan session. |
| set_PageAutoSize | Sets the page size detection mode for current scan session. |
| set_PageOrientation | Sets orientation of images for current scan session. |
| set_PageSize | Sets page size for current scan session. |
| set_PixelFlavor | Sets pixel flavor for current scan session. |
| set_PixelType | Sets pixel type of images for current scan session. |
| set_SaneResolution | Sets image resolution of SANE device. |
| set_SaneScanMode | Sets name of scan mode of SANE device. |
| set_SaneScanSource | Sets name of scan source of SANE device. |
| set_Threshold | Sets threshold of black-white images for current scan session. |
| set_TransferMode | Sets transfer mode for current scan session. |
| set_UnitOfMeasure | Sets unit of measure for current scan session. |
| set_XferCount | Sets count of images application wants to receive from the device. |
| set_XResolution | Sets X-axis resolution of images for current scan session. |
| set_YResolution | Sets Y-axis resolution of images for current scan session. |
| setCapabilities | Sets values of TWAIN device capabilities. |
| setCapabilitiesAsync | Sends an asynchronous request to set values of TWAIN device capabilities. |
| setCapability | Overloaded. Sets value of TWAIN device capability. |
| setCapabilityAsync | Overloaded. Sends an asynchronous request to set value of TWAIN device capability. |
| setImageLayout | Sets the image layout rectangle of TWAIN/SANE device. |
| setImageLayoutAsync | Sends an asynchronous request to set the image layout rectangle of TWAIN/SANE device. |
See Also