List box

[Klod]

I've been searching this forum on information on how to make a dropdown Listbox, but can't seem to find anything.
The styles listed in the  Win32SDK do not contain a dropdown style. the SDK reads:

To create a list box by using the CreateWindow or CreateWindowEx function, use the LISTBOX class, appropriate window style constants, and the following style constants to define the list box.

What are "appropriate" window style constants for a Listbox? Using WS_VSCROLL style will add a scrollbar but I can't make it dropdown.
Is this style only for ComboBoxes?
I would like to make the width of the Listbox the same as the length of the strings it displays. How do I convert a string length to dialog units?
any help would be appreciated

[Tedd]

What you actually want is a "combobox" :wink

So you'll need the following lines:

Code Select Expand

IDCB equ 1001

.data
cbClass     db "COMBOBOX",0
      .
      .

      .
      .
    .ELSEIF (eax==WM_CREATE)
        invoke CreateWindowEx, WS_EX_CLIENTEDGE,ADDR cbClass,NULL,WS_VISIBLE or WS_CHILD or WS_VSCROLL or CBS_DROPDOWNLIST or CBS_HASSTRINGS or CBS_SORT,5,5,150,200,hwnd,IDCB,hInstance,NULL
      .
      .

Combobox styles all start with CBS_ - which you can find in the windows api help or on msdn, etc (or even search through windows.inc).