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Stored procedures
The following constants are used by the Twain functions:
ConstantDescriptionUsed by the functions
tsLoadedThe Twain manager is loadedTwainState
tsOpenThe Twain manager is opened
tsSourceEnabledThe source is enabled
tsSourceOpenThe source is opened
tsSourceReadyThe source is ready to transfer data
tsSourceTransferThe source is currently transferring data.
tsUnloadedThe Twain manager is not loaded
TwainAnyTypeRetrieves any type of imageTwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF
TwainAutoDeskewEnabledProperty of the Twain device: Management mode of automatic image deskew.TwainProperty
TwainAutoResizeEnabledProperty of the Twain device: Management mode of automatic resize.TwainProperty
TwainAutoRotationEnabledProperty of the Twain device: Management mode of image rotationTwainProperty
TwainBarCodeDetectionEnabledProperty of the Twain device: Detection mode of bar codes.TwainProperty
TwainBitsByPixelProperty of the Twain device: Number of bits per pixel.TwainProperty
TwainBlackWhiteRetrieves the image in black and whiteTwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF
TwainBlankPageSkipEnabledProperty of the Twain device: Management mode of blank pagesTwainProperty
TwainBorderDetectionEnabledProperty of the Twain device: Detection mode of borders.TwainProperty
TwainBrightnessProperty of the Twain device: Brightness of the device.TwainProperty
TwainContrastProperty of the Twain device: Contrast of the Twain device.TwainProperty
TwainDuplexProperty of the Twain device: Support for double side.TwainProperty
TwainDuplexEnabledProperty of the Twain device: Management mode of double side.TwainProperty
TwainFeederEnabledProperty of the Twain device: Management mode of feeder.TwainProperty
TwainGrayScaleRetrieves the image in grayscaleTwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF
TwainHeightProperty of the Twain device: Maximum height (in millimeters).TwainProperty
TwainInterfaceControllableProperty of the Twain device: Management mode of user interface.TwainProperty
TwainPaletteRetrieves the image using colors from a palette (1 , 4 or 8 bits per pixel)TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF
TwainReadyProperty of the Twain device: Status of the device.TwainProperty
TwainResolutionProperty of the Twain device: Resolution in pixels per inch.TwainProperty
TwainRGBRetrieves the RGB image (24 bits per pixel)TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF
TwainTypeProperty of the Twain device: Type of supported images.TwainProperty
TwainWidthProperty of the Twain device: Maximum width (in millimeters)TwainProperty
Minimum version required
  • Version 9
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Last update: 05/26/2022

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