TIEGlobalSettings.TwainCompatibilityOptions
Declaration
property TwainCompatibilityOptions: TIETwainCompatibilityOptions;
Description
Provides customization of some Twain functionality for improved compatibility.
| Item | Description |
| ietcCropBufferedTransferImage | Sometimes the size communicated by the Twain device is bigger than the actual transfered image. Including this option (default), attempts to fix this by cropping the image to the size of the actually received image |
| ietcReleaseTwainResources | If included, ImageEn will free Twain resources when not being used |
| ietcReuseTwainWindowHandle | If included, the Twain dialog handle will be reused |
| ietcModelessSelectSource | If included the Twain source selection dialog is modeless (can lose focus). If False the selection dialog is modal |
| ietcExplicitlySetCapabilities | If included, the following Twain properties will be explicitly set, even if they have not changed from the default (Note: not enabled, but explicitly set in Twain driver): AutoBright, AutoFeed, AutoDeskew, DoubleFeedDetection, AutoBorderDetection, AutomaticColorEnabled, AutoRotate, DuplexSupported, UndefinedImageSize |
| ietcExplicitAcquireFrame | If included, the Twain Acquisiton Frame Properties will be explicitly read and set even if AcquireFrameEnabled=False |
| ietcValidateDialogVisibility | If included and VisibleDialog is disabled, we explicitly check that the system allows disabling of the dialog |
Default: [ ietcCropBufferedTransferImage ]
Example
// Force release of Twain resources
IEGlobalSettings().TwainCompatibilityOptions := IEGlobalSettings().TwainCompatibilityOptions + [ ietcReleaseTwainResources ];
Compatibility Notes
The behavior up to v9.3.1 was equivalent to: [ ietcCropBufferedTransferImage, ietcReuseTwainWindowHandle ]
In v15.0.0, the behavior changed to exclude ietcValidateDialogVisibility.
See Also
◼TwainDialogCentering
◼TwainLoopTimeOut
◼TwainTransferBufferSize