- mbstowcs(pwz, tool->m_shortHelpString, lenAnsi + 1);
- memcpy(ttText->szText, pwz,
- (sizeof(ttText->szText) - 1)/sizeof(ttText->szText[0]));
- ttText->szText[WXSIZEOF(ttText->szText)] = 0;
+
+ // using the pointer of right type avoids us doing all sorts of
+ // pointer arithmetics ourselves
+ wchar_t *dst = (wchar_t *)ttText->szText,
+ *pwz = new wchar_t[lenUnicode + 1];
+ mbstowcs(pwz, help, lenAnsi + 1);
+ memcpy(dst, pwz, lenUnicode*sizeof(wchar_t));
+
+ // put the terminating _wide_ NUL
+ dst[lenUnicode] = 0;