Method onMenuSelect

src/envshell.cpp:255–274

adapted from https://devblogs.microsoft.com/oldnewthing/20040928-00/?p=37723

// https://devblogs.microsoft.com/oldnewthing/20040928-00/?p=37723
//
void ShellMenu::onMenuSelect(HWND hwnd, HMENU hmenu, int item, HMENU hmenuPopup,
                             UINT flags)
{
  if (m_cm && item >= QCM_FIRST && item <= QCM_LAST) {
    WCHAR szBuf[MAX_PATH];

    const auto r = IContextMenu_GetCommandString(m_cm.get(), item - QCM_FIRST,
                                                 GCS_HELPTEXTW, NULL, szBuf, MAX_PATH);

    if (FAILED(r)) {
      lstrcpynW(szBuf, L"No help available.", MAX_PATH);
    }

    if (m_mw) {
      if (auto* sb = m_mw->statusBar()) {
        sb->showMessage(QString::fromWCharArray(szBuf));
      }
    }
  }
}

void ShellMenu::create()
{