How can I make a file selector with a combobox in VC++ 2008?

Question

Hi,

I have this dialog:

ID__BATERIA __FAX DIALOGEX 0, 0, 235, 86

STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | WS_POPUP | WS_CAPTION | WS_SYSMENU

CAPTION "Nueva batería de fax" FONT 8, "MS Shell Dlg", 400, 0, 0x1

BEGIN

DEFPUSHBUTTON   "OK",IDOK,120,65,50,14
PUSHBUTTON      "Cancel",IDCANCEL,175,65,50,14
LTEXT           "Archivo",IDC_STATIC,20,12,25,8
LTEXT           "Descripción",IDC_STATIC,20,40,37,8
EDITTEXT        IDC_DESCBATER,65,38,120,13,ES_AUTOHSCROLL 
COMBOBOX        IDC_ARCH2,65,10,120,60,CBS_DROPDOWN | CBS_AUTOHSCROLL | CBS_SORT | WS_VSCROLL | WS_TABSTOP

END

I want the combobox to be a file selector. So I wrote this:

BOOL CALLBACK BateriaFaxDlg(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam){

char descripcion[100];
char archivo[20];

switch (msg)                  /* manipulador del mensaje */
{
    case WM_INITDIALOG:
  SendMessage(GetDlgItem(hDlg, IDC_ARCH2), CB_DIR, DDL_READWRITE | DDL_DIRECTORY, (LPARAM)"*");   
  return TRUE;
    case WM_COMMAND:
  switch (LOWORD(wParam)) {
  case IDOK:
   SendDlgItemMessage(hDlg, IDC_ARCH2, WM_GETTEXT, 20, (LPARAM)archivo);
   GetDlgItemText(hDlg, IDC_DESCBATER, descripcion , 100);
   actualizarBaterias("FAX", archivo, descripcion);
   EndDialog(hDlg, FALSE);
   break;
  case IDCANCEL:
   EndDialog(hDlg, FALSE);
   break;
  case IDC_ARCH2:    
   switch(HIWORD(wParam)) {
  case CBN_DBLCLK:
       if(DlgDirSelectEx(hDlg, archivo, 512, IDC_ARCH2)) {                        
       // DlgDirList(hDlg, "*", IDC_ARCH2, ID_TITULO, DDL_DIRECTORY | DDL_DRIVES);   
        SendMessage(GetDlgItem(hDlg, IDC_ARCH2), CB_DIR, 0, (LPARAM)"*");
                    // IniciarLista(hwnd, cad);
                  } 
    break;
   }
   break;
  default:
   break;           
       return TRUE;
  }
}
return FALSE;

}

It shows correctly the files and the directorys, but when I try to enter a directory it won't work. The thing I select is [dir] instead going inside and showing the files.

Can anyone help me?

Thanks a lot.

UPDATE:

Ok, I changed it and now it is a Simple ComboBox. Still when I double click on the directories it won't enter and list the files inside. Any ideas?

UPDATE:

It finally works.

Answer 1

From http://msdn.microsoft.com/en-us/library/bb775808.aspx

"This notification message occurs only for a combo box with the CBS_SIMPLE style. In a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style, a double-click cannot occur because a single click closes the list box."