This message is sent when the clipboard contains a data handle for the CF_OWNER-DISPLAY format (that is, the clipboard owner should display the clipboard contents), and requests a copy of the format name.
| Parameter | Description |
| wParam | Specifies the maximum number of bytes to copy. | |
| lParam | Points to the buffer where the copy of the format name is to be stored. |
The clipboard owner should copy the name of the CF_OWNERDISPLAY format into the specified buffer, not exceeding the maximum number of bytes.