ポップアップメニューを表示

gistfile1.txt

// ポップアップメニューを表示
INT ShowPopupMenu(HWND hwnd, INT iSubMenu)
{
    // CreatePopupMenu/AppendMenuかLoadMenuでメニューを作成
    HMENU hMenu = ::LoadMenu(m_hInst, MAKEINTRESOURCE(IDR_POPUPMENU));
    HMENU hSubMenu = ::GetSubMenu(hMenu, iSubMenu);

    ::SetForegroundWindow(hwnd);

    POINT pt;
    ::GetCursorPos(&pt);

    auto flags = TPM_RETURNCMD | TPM_LEFTALIGN | TPM_RIGHTBUTTON;
    INT nCmdID = (INT)::TrackPopupMenu(hSubMenu, flags, pt.x, pt.y, 0, hwnd, nullptr);

    ::PostMessage(hwnd, WM_NULL, 0, 0);

    if (nCmdID != 0 && nCmdID != -1)
        ::PostMessage(hwnd, WM_COMMAND, nCmdID, 0);

    // メニューを破棄
    ::DestroyMenu(hMenu);
    return nCmdID;
}

// WM_CONTEXTMENU
void OnContextMenu(HWND hwnd, HWND hwndContext, UINT xPos, UINT yPos)
{
    ShowPopupMenu(hwnd, 0);
}