| ImageEn, unit imageenview |
|
TImageEnView.LayersCaching
Declaration
property LayersCaching: Integer;
Description
Whether a cached view of every layer is stored in memory.
Layer caching speeds up display (and access to
Bitmap), but uses more memory.
Supported values:
| Value | Description |
| -1 | A cached view is stored for each layers. This provides the best performance, but can use a lot of memory if there are many layers |
| 0 | No cached views of layers are stored. This uses the least memory |
| >0 | Specifies a maximum number of cached views to store |
Default: 0
Layer Performance Properties
To improve the performance in layer applications, consider the following properties:
◼LayersCaching: Caches the view of each layer. Much faster but uses more memory.
◼LayersFastDrawing: Display quality of layers (and whether the quality view is delayed).
◼LayerFastDrawingEffects specifies which features are disabled while fast drawing.
◼ZoomFilter/
DelayZoomFilter: Display quality of images (and whether the quality view is delayed). This option is ignored if LayersFastDrawing is active
◼LayersRotationUseFilterOnPreview: Whether the quality filter (
LayersRotationFilter) is previewed without
applying the rotationReview the Demos\LayerEditing\Layers_AllTypes\ demo for example code.
// Cache all layers
ImageEnView1.LayersCaching := -1;
// Cache a maximum of 30 layers
ImageEnView1.LayersCaching := 30;
// Disable all layer caching
ImageEnView1.LayersCaching := 0;
See Also
◼LayersFastDrawing