[C++] - text alignment

[joaquim]

i did these code for change the text alignment:

void setTextAlignment(int textalignment)
    {
        long s;
        if(textalignment!=intTextAlignment)
        {
            //delete the last text alignment
            if(intTextAlignment==0)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s & ~(SS_LEFT);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }
            else if (intTextAlignment==1)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s & ~(SS_CENTER);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }
            else if(intTextAlignment==2)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s & ~(SS_RIGHT);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }

            textalignment=intTextAlignment;

            //put the new text alignment
            if(textalignment==0)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s | (SS_LEFT);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }
            else if (textalignment==1)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s | (SS_CENTER);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }
            else if(textalignment==2)
            {
                s = GetWindowLongPtr(hwnd,GWL_STYLE);
                s = s | (SS_RIGHT);
                SetWindowLongPtr(hwnd,GWL_STYLE,(LONG_PTR)s);
            }
            SetWindowPos(hwnd, 0, 0, 0, 0, 0,
                    SWP_NOZORDER| SWP_NOSIZE | SWP_NOMOVE|SWP_NOACTIVATE |SWP_NOCOPYBITS | SWP_DRAWFRAME);
        }
    }

but, by some reason, the aligment isn't changed... and i don't understand why
can anyone explain what i'm doing wrong?

[joaquim]

finaly i found the problem.. was the 's'...
heres the code changed:

void setTextAlignment(int textalignment)
    {
        intTextAlignment=textalignment;
        LONG_PTR new_style=0;

        if(textalignment==0)
            new_style = SS_LEFTNOWORDWRAP;
        else if( textalignment == 1 )
            new_style = SS_CENTER;
        else if(textalignment==2)
            new_style =SS_RIGHT;
        else if(textalignment==3)
            new_style =SS_RIGHTJUST;

        LONG_PTR s = GetWindowLongPtr( hwnd, GWL_STYLE );

        s = ( s & ~( SS_LEFT | SS_CENTER | SS_RIGHT | SS_LEFTNOWORDWRAP ) ) | new_style;

        SetWindowLongPtr( hwnd, GWL_STYLE, s );
        SetWindowPos(hwnd, 0, 0, 0, 0, 0,
                    SWP_NOZORDER| SWP_NOSIZE | SWP_NOMOVE|SWP_NOACTIVATE |SWP_NOCOPYBITS | SWP_DRAWFRAME);
    }

the MSDN documentation is, sometimes, confused... so i ask here: is there any way for justify the text alignment?
i belive that the number 3 isn't right