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BrowseCallbackProc info

Specifies an application-defined callback function used with the SHBrowseForFolder function. The browse dialog box calls this function to notify it about events. The BFFCALLBACK type defines a pointer to this callback function.

int BrowseCallbackProc(

    HWND hwnd,

    UINT uMsg,

    LPARAM lParam,

    LPARAM lpData

   );

Parameters

hwnd
Handle to the browse dialog box. The callback function can send the following messages to this window:

BFFM_ENABLEOK

Enables the OK button if the wParam parameter is nonzero or disables it if wParam is zero.

BFFM_SETSELECTION

Selects the specified folder. The lParam parameter is the PIDL of the folder to select if wParam is FALSE, or it is the path of the folder otherwise.

BFFM_SETSTATUSTEXT

Sets the status text to the null-terminated string specified by the lParam parameter.

uMsg
Value identifying the event. This parameter can be one of the following values:

BFFM_INITIALIZED

The browse dialog box has finished initializing. lpData is NULL.

BFFM_SELCHANGED

The selection has changed. lpData is a pointer to the item identifier list for the newly selected folder.

lParam
Message-specific value. For more information, see the description of uMsg.
lpData
Application-defined value that was specified in the lParam member of the BROWSEINFO structure.

Return Values

Returns zero.

See Also

BROWSEINFO 

See also:


file: /Techref/os/win/api/win32/func/src/f03_14.htm, 4KB, , updated: 2001/6/23 20:30, local time: 2022/5/23 16:15,
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