| Value | Description |
|---|---|
| ieuUnknown | Unexpected source |
| ieuImage | The bitmap (of the current layer, if there are multiple layers) |
| ieuSelection | The area the user has selected (Not the bitmap content within the selection, just the selection dimensions) |
| ieuObject | All objects of a TImageEnVect |
| ieuLayer | Properties of all current layers (position, size, etc, but not the layer bitmaps) |
| ieuFullLayer | Same as ieuLayer but also saves the layer bitmaps |
| ieuObjectsAndLayers | Saves complete state: Properties and bitmaps of all layers (TImageEnView) or objects (TImageEnVect) |