data-types for dll's

Hi,

I'm trying to make some functions work in Progress of a - like they call it a 'native mode DLL' but I have some problems where I could use some help ;-)

The function expects a "Window handle of a text control"
As far as I know that means the <widget>:hwnd,
The problem is that the widget that I use is a System.Windows.Forms.TextBox and there is nu hwnd-property for that so I tried with:
define variable phwnd as System.IntPtr no-undo.
assign phwnd = TextBox1:handle.

Can someone confirm me that this TextBox1:handle is the same as the hwnd of that widget??
If not: how can I get the hwnd of a System.Windows.Forms.TextBox control?

The second problem are some other parameters that I need to provide.
In the example (VB) I see:
Global Const SSCE_IGNORE_CAPPED_WORD_OPT = &H1&
Global Const SSCE_IGNORE_MIXED_CASE_OPT = &H2&
Global Const SSCE_IGNORE_MIXED_DIGITS_OPT = &H4&

I converted these to
&global define ...
But how must I convert the values??? I guess &H1& will not work in Progress
Also the function that I want to use expects the following as a input parameter: Options bit-mask
As far as I understand that is a combination of all global Const (see above) that I want to use, so for example &H1& and &H4&. So I guess I will need to sum up all the wanted values. I'm I correct here?

Hope someone can help here because I only get the error that the data-types do not match but no idea what parameter is wrong (the hwnd or the option bit-mask)

regards
Didier