A File Manager extension sends an FM_GETSELCOUNTLFN message to retrieve the number of selected files in the active File Manager window (either the directory window or the Search Results window). The count includes files that have long filenames.
FM_GETSELCOUNTLFN
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 number of selected files.
Remarks
Only extensions that support long filenames (for example, network-aware extensions) should use this message.
See Also