ImageEn FAQ

Information about the earlier beta is available on our forum.

You can review the IEvolution Help Documentation for more information.

1. You have multiple copies of the ImageEn BPL files on your system (generally error is for DPKIECtrl*.bpl)

Search your system for any PKIE*.* and DPKIE*.* files and remove them (it might help to review the library paths under Tools > Options, Library). Then reinstall ImageEn.

2. You have another package that uses the ImageEn BPL (generally error is for PKIECtrl*.bpl)

A package - either one of ImageEn's or one of your own - is trying to access PKIECtrl26.bpl, but is failing because PKIECtrl26.bpl has been recompiled more recently. The error may be followed by another one that advised you which package is giving you the error: "Xyz package could not be loaded. Would you like to load it next time you run Delphi...".

If you know which package has caused the problem, open it's DPK file and recompile it. Otherwise, go through each of your packages and recompile any that use ImageEn.

i. Follow the link in your order email to the download page
ii. For each version of Delphi/C++Builder that you use, download the necessary packages (you must download both 32bit and 64bit versions).
iii. Copy/save the package zips to the same folder the installer
iv. Run the installer EXE

Your install folder should look something like:

If you continue to have problems, please email us with the install log file (from your Windows temp folder).

• ImageEn PDFium Plug-in (Free)
• WPViewPDF (Commercial)
• ImageMagick + GhostScript (Free)

If you need to test 64bit Twain support, you can use the FreeImage Software scanner driver:

https://sourceforge.net/projects/twain-samples/files/TWAIN%202%20Sample%20Data%20Source/

Configure or disable individual keyboard shortcuts using TIEGlobalSettings.KeyboardShortcuts>

• Most importantly, decide whether the TImageEnMView should load and store full size images. If you are loading the content of a multi-page file, such as TIFF, for editing and display purposes then generally you will want TImageEnMView.StoreType=ietNormal. However, if you are displaying thousands of photos from a folder, for example, then you are better to use load only thumbnails (TImageEnMView.StoreType is ietThumb or ietFastThumb)
• Load images only on demand (i.e. as they are displayed or needed). To do this, ensure the LoadOnDemand parameter is set for AppendImage, InsertImage, FillFromDirectory or FillFromFolder
• Lock updating while performing batch operations (LockUpdate/UnlockUpdate)
• Consider options to load EXIF thumbnails (TImageEnMView.EnableLoadEXIFThumbnails) or Windows Explorer thumbnails (TImageEnMView.EnableLoadExplorerThumbnails)
• Increasing the size of the image cache can help with general performance (TImageEnMView.ImageCacheSize), especially if you are using TImageEnMView.StoreType=ietFastThumb

IEGlobalSettings().RegisterPlugIns();

Note: If ImageMagick has been installed on the system, ImageEn will automatically supports its formats.

Here is some example code from the Layers_AllTypes demo:

procedure Tfmain.cmbPreviewQualityChange(Sender: TObject);
const
  _cmbPreviewQuality_Fast = 0;
  _cmbPreviewQuality_Delayed_Best = 1;
  _cmbPreviewQuality_Best = 2;
begin
  // Separate code to make it easier to understand

  if cmbPreviewQuality.ItemIndex = _cmbPreviewQuality_Fast then
  begin
    // FASTEST DISPLAY

    // Zoom filter
    ImageEnView1.ZoomFilter := rfNone;
    ImageEnView1.DelayZoomFilter := False;

    // Rotation anti-alias
    ImageEnView1.LayersRotationFilter := ierBicubic;
    ImageEnView1.LayersRotationUseFilterOnPreview := False;

    // Fast drawing
    ImageEnView1.LayersFastDrawing := iefFast;
 end
  else
  if cmbPreviewQuality.ItemIndex = _cmbPreviewQuality_Delayed_Best then
  begin
    // DELAYED HIGH QUALITY

    // Zoom filter
    ImageEnView1.ZoomFilter := rfLanczos3;
    ImageEnView1.DelayZoomFilter := True;

    // Rotation anti-alias
    ImageEnView1.LayersRotationFilter := ierBicubic;
    ImageEnView1.LayersRotationUseFilterOnPreview := True;

    // Fast drawing
    ImageEnView1.LayersFastDrawing := iefDelayed;
  end
  else
  begin
    // HIGH QUALITY

    // Zoom filter
    ImageEnView1.ZoomFilter := rfLanczos3;
    ImageEnView1.DelayZoomFilter := False;

    // Rotation anti-alias
    ImageEnView1.LayersRotationFilter := ierBicubic;
    ImageEnView1.LayersRotationUseFilterOnPreview := True;

    // Fast drawing
    ImageEnView1.LayersFastDrawing := iefNormal;
  end;

  ImageEnView1.Update();
end;


procedure Tfmain.chkLayerCachingClick(Sender: TObject);
begin
  if chkLayerCaching.Checked then
    ImageEnView1.LayersCaching := -1
  else
    ImageEnView1.LayersCaching := 0;
end;