Preview
Preview = Reality. The canvas already renders with the live CTk runtime — the preview window just runs it without editor chrome.
| Button | Shortcut | What runs |
|---|---|---|
| Preview Active form | Ctrl+P |
Just the active form |
| Preview (all forms) | Ctrl+R |
Main form + all dialogs reachable from it |
Preview launches in a separate console window, so any print() from your Event Handlers stays visible alongside the UI.
Close the preview window to return to the editor. Builder state is unchanged.
See also — Canvas Workspace · Event Handlers · Exporting Code