Fills the list box of a combo box with a file or directory listing.
int DlgDirListComboBox( LPTSTR lpPathSpec, int nIDComboBox, int nIDStaticPath, UINT nFileType );
DlgDirListComboBox sends CB_RESETCONTENT and CB_DIR messages to the combo box. It fills the list box of the combo box specified by nIDComboBox with the names of all files that match the path given by lpPathSpec.
The lpPathSpec parameter has the following form:
[drive:] [ [\u]directory[\idirectory]...\u] [filename]
In this example, drive is a drive letter, directory is a valid directory name, and filename is a valid filename that must contain at least one wildcard. The wildcards are a question mark (?), which means match any character, and an asterisk (*), which means match any number of characters.
If you specify a zero-length string for lpPathSpec, the current directory will be used and lpPathSpec will not be modified. If you specify only a directory name but do not include any file specification, the string will be changed to "*".
If lpPathSpec includes a drive and/or directory name, the current drive and directory are changed to the designated drive and directory before the list box is filled. The text control identified by nIDStaticPath is also updated with the new drive and/or directory name.
After the combo-box list box is filled, lpPathSpec is updated by removing the drive and/or directory portion of the path.
// If pDialog points to a CDialog object with a combo box // with the identifier IDC_DIRCOMBO, this call will populate // the box with only the non-hidden subdirectories in the root // directory of the C:\ drive. TCHAR szPath[MAX_PATH]; _tcsncpy_s(szPath, MAX_PATH, _T("C:\\"), MAX_PATH); pDialog->DlgDirListComboBox(szPath, IDC_DIRCOMBO, 0, DDL_EXCLUSIVE | DDL_DIRECTORY); // Note that the first argument is a string and not a string // literal. This is necessary because DlgDirListComboBox // modifies the supplied string. Passing a string literal // will result in an access violation.