从MFC窗口中弹出一个WPF子窗口

通常需要：1，设置窗口的父子关系；2，确定弹出窗口的初始显示位置；

void CMainFrame::OnDoSomething() 
{
    WndWpf^ wnd = gcnew WndWpf();
    WindowInteropHelper^ wndHelper = gcnew WindowInteropHelper(wnd);
    IntPtr ptr(this->GetSafeHwnd());
    wndHelper->Owner = ptr;
    
    // move the window to (left, top) of client area
    CRect rc;
    this->GetClientRect(&rc);
    this->ClientToScreen(&rc);
    wnd->Left = rc.left;
    wnd->Top = rc.top;
    
    wnd->Show();
}

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