| 500 | UI startup error | |
| 501 | Unrecognized control type | |
| 502 | Failed to add item | |
| 503 | Invalid modality state | |
| 504 | Font creation failed | |
| 505 | Menu creation failed | |
| 506 | Menu insertion failed | |
| 507 | Menu not parentless | |
| 508 | Menu not in menubar | |
| 509 | Menu item not checkable | |
| 510 | Bitmap creation failed | |
| 511 | Tool bar creation failed | |
| 512 | Status bar creation failed | |
| 513 | Tool creation failed | |
| 514 | Style doesn't make sense | |
| 515 | Common dialog creation failed | |
| 516 | Not a valid choice | |
| 517 | Mouse not captured | |
| 518 | Controls not captured | |
| 519 | Disabled | You have attempted to set focus to a disabled control |
| 520 | Invisible | You have attempted to set focus to an invisible control |
| 521 | Not valid ellipse | You have attempted to create an ellipse using invalid coordinates |
| 522 | Cannot be done for child windows | You have attempted to use a method to make changes to a child window
in a way that is not supported, such as calling setstate() to minimize or
maximize a child window. |
| 523 | Cancelled | The user cancelled the print out. |
| 524 | Printing error | An error occurred while attempting to print the printout. |
| 525 | Preview creation failed | An error occurred while to create the print preview. |
| 526 | Can't make icon from bitmap | |
| 527 | Child window can't have icon | |
