LB_DIR
wParam = (WPARAM)(UINT)uAttrs; /* file attributes */
lParam = (LPARAM)(LPCTSTR)lpszFileSpec; /* filename address */
An application sends a LB_DIR message to add a list of file names to a list box.
wParam
Specifies the attributes of the files to be added to the list box. It can be any combination of the following values:
| Value | Meaning |
| 0x00000000 | File can be read from or written to. |
| 0x00000001 | File can be read from, but not written to. |
| 0x00000002 | File is hidden and does not appear in a directory listing. |
| 0x00000004 | File is a system file. |
| 0x00000010 | The name specified by the lpszFileSpec parameter specifies a directory. |
| 0x00000020 | File has been archived. |
| 0x00004000 | Include all drives that match the name specified by the lParam parameter. |
| 0x00008000 | Exclusive flag. If the exclusive flag is set, only files of the specified type are listed. Otherwise, files of the specified type are listed in addition to “normal” files. |
lParam
Points to the null-terminated string that specifies the file name to add to the list. If the file name contains wildcard characters (for example, *.*), all files that match the wildcards and have the attributes specified by the wParam parameter will be added to the list.
The return value is the index of the last filename added to the list. The return value is LB_ERR if an error occurs; the return value is LB_ERRSPACE if insufficient space is available to store the new strings.
The LB_DIR message may be used as either a wide-character message (where text arguments must use Unicode) or an ANSI message (where text arguments must use characters from the Windows 3.x character set installed).
DlgDirList