sendmessage函数传递鼠标消息的有趣现象！(0分)

procedure TForm2.Button2Click(Sender: TObject);<br>var<br>I:integer;<br>begin<br>for I := 0 to 20 &nbsp;do<br>begin<br>sendmessage(hnd,WM_MOUSEMOVE,20*I,20*I);<br>end<br>end;<br><br>end.<br><br>这个函数，可以往其他窗口（句柄hnd）发送鼠标移动的消息，可是却只能往x方向移动，不知何故？

lParam才是鼠标移动位置，高位X,低位Y<br><br>lParam<br>The low-order word specifies the x-coordinate of the cursor. The coordinate is relative to the upper-left corner of the client area. <br><br>The high-order word specifies the y-coordinate of the cursor. The coordinate is relative to the upper-left corner of the client area.

我已经解决。<br>谢谢<br>应该是：y*65536+x