WIA driver does not allow to hide (disable) user interface - it's limitation of WIA drivers when they are used via TWAIN interface.
Here is a code snippet for Visual Basic that shows how to acquire images without UI:
Code: Select all
VSTwain1.StartDevice()
If VSTwain1.SelectSource() Then
VSTwain1.ShowUI = False
VSTwain1.DisableAfterAcquire = True
VSTwain1.OpenDataSource()
VSTwain1.UnitOfMeasure = 0 ' 0-Inches, 1-Centimeters, ..., 5-Pixels
VSTwain1.PixelType = 1 ' 0-BW, 1-Palette/gray, 2-RGB
VSTwain1.Acquire()
End If