Extension Messages
An extension can send the following window messages to retrieve relevant
information from File Manager. File Manager is guaranteed to respond correctly only
to messages sent from the
FMExtensionProc function.
Message
| Description
|
FM_GETDRIVEINFO
| File Manager returns drive information from the active window. An extension
provides a pointer to an FMS_GETDRIVEINFO structure; File Manager fills the structure with drive information.
|
FM_GETFILESEL
| File Manager returns information about a selected file from the active File
Manager window (either the directory window or the Search Results window). An
extension provides a pointer to an FMS_GETFILESEL structure; File Manager fills the structure with file information.
|
FM_GETFILESELLFN
| Same as the FM_GETFILESEL message except that the selected file may have a
long filename.
|
FM_GETFOCUS
| File Manager returns a value that identifies the type of window with input
focus.
|
FM_GETSELCOUNT
| File Manager returns the count of selected files in the directory and Search
Results windows.
|
FM_GETSELCOUNTLFN
| Same as the FM_GETSELCOUNT message except that the count includes files with
long filenames.
|
FM_REFRESH_WINDOWS
| File Manager repaints either its active window or all of its windows. This
message is similar to File Manager's Refresh command on the Window menu.
|
FM_RELOAD_EXTENSIONS
| File Manager reloads all extensions. First, File Manager unloads all
extensions, sending an FMEVENT_UNLOAD message to each extension. Then, it reloads the
extensions, sending an FMEVENT_LOAD message to each extension. The
FM_RELOAD_EXTENSIONS message allows an extension to uninstall itself by removing its setting
from the WINFILE.INI file; this action causes File Manager to reload the
remaining extensions. Other applications and programs (for example, installation
programs) can also post this message by calling the PostMessage function.
|
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