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The following constants are used by the Twain functions: | | | | Constant | Description | Used by the functions |
|---|
| tsLoaded | The Twain manager is loaded | TwainState | | tsOpen | The Twain manager is opened | | tsSourceEnabled | The source is enabled | | tsSourceOpen | The source is opened | | tsSourceReady | The source is ready to transfer data | | tsSourceTransfer | The source is currently transferring data. | | tsUnloaded | The Twain manager is not loaded | | TwainAnyType | Retrieves any type of image | TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF | | TwainAutoDeskewEnabled | Property of the Twain device: Management mode of automatic image deskew. | TwainProperty | | TwainAutoResizeEnabled | Property of the Twain device: Management mode of automatic resize. | TwainProperty | | TwainAutoRotationEnabled | Property of the Twain device: Management mode of image rotation | TwainProperty | | TwainBarCodeDetectionEnabled | Property of the Twain device: Detection mode of bar codes. | TwainProperty | | TwainBitsByPixel | Property of the Twain device: Number of bits per pixel. | TwainProperty | | TwainBlackWhite | Retrieves the image in black and white | TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF | | TwainBlankPageSkipEnabled | Property of the Twain device: Management mode of blank pages | TwainProperty | | TwainBorderDetectionEnabled | Property of the Twain device: Detection mode of borders. | TwainProperty | | TwainBrightness | Property of the Twain device: Brightness of the device. | TwainProperty | | TwainContrast | Property of the Twain device: Contrast of the Twain device. | TwainProperty | | TwainDuplex | Property of the Twain device: Support for double side. | TwainProperty | | TwainDuplexEnabled | Property of the Twain device: Management mode of double side. | TwainProperty | | TwainFeederEnabled | Property of the Twain device: Management mode of feeder. | TwainProperty | | TwainGrayScale | Retrieves the image in grayscale | TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF | | TwainHeight | Property of the Twain device: Maximum height (in millimeters). | TwainProperty | | TwainInterfaceControllable | Property of the Twain device: Management mode of user interface. | TwainProperty | | TwainPalette | Retrieves the image using colors from a palette (1 , 4 or 8 bits per pixel) | TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF | | TwainReady | Property of the Twain device: Status of the device. | TwainProperty | | TwainResolution | Property of the Twain device: Resolution in pixels per inch. | TwainProperty | | TwainRGB | Retrieves the RGB image (24 bits per pixel) | TwainToBMP,
TwainToControl,
TwainToGIF,
TwainToJPEG,
TwainToPDF
TwainToClipboard
TwainToTIFF | | TwainType | Property of the Twain device: Type of supported images. | TwainProperty | | TwainWidth | Property of the Twain device: Maximum width (in millimeters) | TwainProperty |
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