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GdPictureImaging.TwainGetImageFileFormat Method
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Returns the current image file format used by the selected twain source for file transfer mode.

C#
public TwainImageFileFormats TwainGetImageFileFormat();
Visual Basic
Public Function TwainGetImageFileFormat() As TwainImageFileFormats
Returns

If fail, TWFF_UNSUPPORTED : probably not supported by the current device -> Use TwainGetLastResultCode() and TwainGetLastConditionCode() functions for diagnosing the error. 

If success, Current file format to use in file transfer mode. A member of the GdPicture enumeration.

Remarks

Before using this function check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN) 

To get the TWAIN state, use the TwainGetState() function.

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