The IExchExtModelessCallback interface is implemented by the Microsoft Exchange client to coordinate with extension objects using a modeless user interface.
| Header file: | EXCHEXT.H |
| Exposed by: | Extension objects |
| Implemented by: | Microsoft Exchange |
| Called by: | Extension objects |
| Corresponding pointer type: | LPEXCHEXTMODELESSCALLBACK |
| EnableModeless | Enables the Microsoft Exchange client to enable or disable its modeless windows. |
| AddWindow | Enables Microsoft Exchange to keep track of modeless windows displayed by extension objects. |
| ReleaseWindow | Enables the Microsoft Exchange client to keep track of modeless windows displayed by extension objects. |