| Value | Description |
|---|---|
| ieMemory | Uses standard memory. Canvas not available. Used for fast and smaller images |
| ieFile | Uses memory mapped files. Canvas not available. Used for very large images |
| ieTBitmap | Uses TBitmap VCL object. Canvas available. Used for drawing and compatibility. Location can be assigned before or after Allocate. Assigning Location on a existing image it converts the image to new location |