A File Manager extension sends a FM_GETFOCUS message to retrieve the type of the File Manager window that has the input focus.
FM_GETFOCUS
wParam = 0; // not used, must be zero
lParam = 0; // not used, must be zero
Parameters
This message has no parameters.
Return Values
The return value is the type of File Manager window that has input focus. It can be one of the following values:
| Value | Meaning |
| FMFOCUS_DIR | Directory portion of a directory window |
| FMFOCUS_TREE | Tree portion of a directory window |
| FMFOCUS_DRIVES | Drive bar of a directory window |
| FMFOCUS_SEARCH | Search Results window |