Declarationproperty ThumbnailDisplayFilter: TResampleFilter;
ThumbnailDisplayFilter specifies a filter to apply when an image (thumbnail) need to be resized for display. Filters improve the quality of the thumbnail, but can slow down the application.
A value of rfNone
provides no quality enhancement. Filters such as rfLanczos3
provide excellent quality, but are slower. A typical value is rfFastLinear
which improves quality with negligible speed impact.
- Unlike ThumbnailResampleFilter
, ThumbnailDisplayFilter is used every time the image needs to be displayed
- For black/white images rfFastLinear
is always used.
Example// Use high quality thumbnails
ImageEnMView1.ThumbnailDisplayFilter := rfLanczos3;