| Name | Description | |
|---|---|---|
 | ControlHandle | Handle of a preview control to attach to. |
| EventHandle | Handle of the event to signal once printing has started. |
| FixedExportFormat | |
| Function | Action to trigger. |
| OriginalProjectFileName | Original file name. |
| PageCount | Maximum page count. |
| ProjectFileName | Project to print. |
| ReturnValue | Return value, e.g. thread state. |
| SuppressDialog | |
| UserParameter | Value set via LlOption.DesignerPreviewParameter. |