ImageEn, unit imageenio

TImageEnIO.Acquire

TImageEnIO.Acquire


Declaration


function Acquire(bResetParams : Boolean = False) : boolean;


Description


Perform a single image acquisition from the SelectedAcquireSource, which may be a Twain or WIA scanner, connected camera or phone. SelectedAcquireSource is set when the user chooses a source if you have called SelectAcquireSource or manually set a source using SetAcquireSource.
If bResetParams is True then SetDefaultParams is called before Acquire to reset the IO parameters (if you have already loaded an image from file).
Result is true if there was a successful acquisition.

Note: For acquisition of multiple images use TImageEnMIO.Acquire.


Demo


  Demos\ImageAcquisition\AllAcquire\AllAcquire.dpr



Examples


// Prompt the user to choose a scanner source and then acquire
if ImageEnView1.IO.SelectAcquireSource([ieaTwain, ieaWIA, ieaDCIM]) then
  ImageEnView1.IO.Acquire;

// Capture from the default WIA device
if ImageEnView1.IO.SetSource(ieaWIA, Default_Device) then
  ImageEnView1.IO.Acquire;

// Select the second Twain device and capture
if ImageEnView1.IO.SetSource(ieaTwain, 1) then
  ImageEnView1.IO.Acquire;

// Capture from the Twain device named, CanoScan FB620
if ImageEnView1.IO.SetSource(ieaTwain, 'CanoScan FB620') then
  ImageEnView1.IO.Acquire;

// Retrieve from the camera card listed as H:\ drive
if ImageEnView1.IO.SetSource(ieaDCIM, 'H') then
  ImageEnView1.IO.Acquire;

// Capture without a dialog
ImageEnView1.IO.AcquireParams.VisibleDialog := False;
if ImageEnView1.IO.Acquire then
ImageEnView1.IO.SaveToFile('D:\newimage.jpg'); // save scanned image