[函数](http://codepongo.com/blog/45P7Gr) ```c++ void ResizeClient(int cx = -1, int cy = -1);//cx为窗体的宽度，cy为窗体的高度 void ResizeClient(int cx /*= -1*/, int cy /*= -1*/) { ASSERT(::IsWindow(m_hWnd)); RECT rc = { 0 }; if( !::GetClientRect(m_hWnd, &rc) ) return; if( cx != -1 ) rc.right = cx; if( cy != -1 ) rc.bottom = cy; if( !::AdjustWindowRectEx(&rc, GetWindowStyle(m_hWnd), (!(GetWindowStyle(m_hWnd) & WS_CHILD) && (::GetMenu(m_hWnd) != NULL)), GetWindowExStyle(m_hWnd)) ) return; ::SetWindowPos(m_hWnd, NULL, 0, 0, rc.right - rc.left, rc.bottom - rc.top, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE); } ```