Question

I need to append text to win32 edit control i have working function to do this , but the text that printed in the edit control is gibrish why ?
the sample code taken from microsoft example from here

void settext(HWND hDlg,std::string s)
{
    //std::wstring ws; 
    //ws.assign( s.begin(), s.end() );
    //LPWSTR pwst = &ws[0];
    //// get temporary LPCWSTR (pretty safe)
    //LPCWSTR pcwstr = ws.c_str();
    //SetDlgItemText(hWndEdit, IDC_EDIT1,pcwstr);
    HWND hWndEdit = GetDlgItem (hDlg, IDC_EDIT1);
    LPSTR pst = &s[0];
    int ndx = GetWindowTextLength (hWndEdit);
    SetFocus (hWndEdit);
    #ifdef WIN32
      SendMessage (hWndEdit, EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);
    #else
      SendMessage (hWndEdit, EM_SETSEL, 0, MAKELONG (ndx, ndx));
    #endif
      SendMessage (hWndEdit, EM_REPLACESEL,0,(LPARAM)pst);
    
}

and from the DlgProc im calling :

std::string  ss("wwwwww");
settext(hwnd,ss);

update
even if i do as suggested here :

 SendMessage (hWndEdit, EM_REPLACESEL,0,(LPARAM)s.c_str()); 

that pass compilation but still the characters printed are gibrish
and if i do :

LPSTR pst = s.c_str()

it doesn’t pass compilation the error:
error C2440: ‘initializing’ : cannot convert from ‘const char *’ to ‘LPSTR’

Answer 1

My guess is that your app is compiled for Unicode and so the window is interpreting your ANSI C string as a Unicode C string, hence the characters from another language.