FMExtensionProc


		Contents Index Topic Contents
	Previous Topic: BrowseCallbackProc Next Topic: UndeleteFile

FMExtensionProc
LONG WINAPI FMExtensionProc(
    HWND hwnd,
    WORD wMsg,
    LONG lParam
);
Application-defined callback function called by File Manager to communicate with a File Manager extension.
Returns a value dependent upon the wMsg parameter message.

hwnd
Window handle to File Manager. An extension should use this handle to specify the parent window for any dialog box or message box it must display; it should also use this handle to send query messages to File Manager.
wMsg
One of the following File Manager messages:

1 through 99 User selected an item from the extension-supplied menu. The value is the identifier of the selected menu item.

FMEVENT_HELPMENUITEM User pressed F1 while selecting an extension menu or toolbar command item. File Manager wants the extension to call WinHelp appropriately for the command item.

FMEVENT_HELPSTRING User selected an extension menu or toolbar command item. File Manager wants the extension to supply a Help string.

FMEVENT_INITMENU User selected the extension's menu. The extension should initialize items in the menu.

FMEVENT_LOAD File Manager is loading the extension DLL and prompts the DLL for information about the menu that the DLL supplies.

FMEVENT_SELCHANGE Selection in the File Manager directory window or Search Results window has changed.

FMEVENT_TOOLBARLOAD File Manager is creating the toolbar and prompts the extension DLL for information about any buttons the DLL adds to the toolbar.

FMEVENT_UNLOAD File Manager is unloading the extension DLL.

FMEVENT_USER_REFRESH User selected the Refresh command from the Window menu. The extension should update items in the menu, if necessary.

lParam
Message-specific value.

Top of Page
© 1997 Microsoft Corporation. All rights reserved. Terms of Use.

1 through 99	User selected an item from the extension-supplied menu. The value is the identifier of the selected menu item.
FMEVENT_HELPMENUITEM	User pressed F1 while selecting an extension menu or toolbar command item. File Manager wants the extension to call WinHelp appropriately for the command item.
FMEVENT_HELPSTRING	User selected an extension menu or toolbar command item. File Manager wants the extension to supply a Help string.
FMEVENT_INITMENU	User selected the extension's menu. The extension should initialize items in the menu.
FMEVENT_LOAD	File Manager is loading the extension DLL and prompts the DLL for information about the menu that the DLL supplies.
FMEVENT_SELCHANGE	Selection in the File Manager directory window or Search Results window has changed.
FMEVENT_TOOLBARLOAD	File Manager is creating the toolbar and prompts the extension DLL for information about any buttons the DLL adds to the toolbar.
FMEVENT_UNLOAD	File Manager is unloading the extension DLL.
FMEVENT_USER_REFRESH	User selected the Refresh command from the Window menu. The extension should update items in the menu, if necessary.