//声明:SetWindowPos(  hWnd: HWND;            {窗口句柄}  hWndInsertAfter: HWND; {窗口的 Z 顺序}  X, Y: Integer;         {位置}  cx, cy: Integer;       {大小}  uFlags: UINT           {选项}): BOOL;//hWndInsertAfter 参数可选值:HWND_TOP       = 0;        {在前面}HWND_BOTTOM    = 1;        {在后面}HWND_TOPMOST   = HWND(-1); {在前面, 位于任何顶部窗口的前面}HWND_NOTOPMOST = HWND(-2); {在前面, 位于其他顶部窗口的后面}//uFlags 参数可选值:SWP_NOSIZE         = 1;    {忽略 cx、cy, 保持大小}SWP_NOMOVE         = 2;    {忽略 X、Y, 不改变位置}SWP_NOZORDER       = 4;    {忽略 hWndInsertAfter, 保持 Z 顺序}SWP_NOREDRAW       = 8;    {不重绘}SWP_NOACTIVATE     = $10;  {不激活}SWP_FRAMECHANGED   = $20;  {强制发送 WM_NCCALCSIZE 消息, 一般只是在改变大小时才发送此消息}SWP_SHOWWINDOW     = $40;  {显示窗口}SWP_HIDEWINDOW     = $80;  {隐藏窗口}SWP_NOCOPYBITS     = $100; {丢弃客户区}SWP_NOOWNERZORDER  = $200; {忽略 hWndInsertAfter, 不改变 Z 序列的所有者}SWP_NOSENDCHANGING = $400; {不发出 WM_WINDOWPOSCHANGING 消息}SWP_DRAWFRAME      = SWP_FRAMECHANGED; {画边框}SWP_NOREPOSITION   = SWP_NOOWNERZORDER;{}SWP_DEFERERASE     = $2000;            {防止产生 WM_SYNCPAINT 消息}SWP_ASYNCWINDOWPOS = $4000;            {若调用进程不拥有窗口, 系统会向拥有窗口的线程发出需求}         //举例:procedure TForm1.Button1Click(Sender: TObject);begin  SetWindowPos(Handle, HWND_TOPMOST, 0,0, 100,200, SWP_SHOWWINDOW);end;