请问如何实现主窗口与子窗口间的互动。(70分)

比如我在子窗口中修改了系统参数，而在点击了应用后，要在主窗口中实时显示修改结果。<br>由于子窗口是有主窗口调用显示的，所以子窗口无法调用主窗口的刷新程序，请各位大虾帮忙解答一下，<br>谢谢！

在主窗口中使用计时器，监控参数的改变。

up！还请各位帮忙<br>

Sendmessage呀，<br>主程序收到该消息后，刷新，

为什么子窗体无法调用主窗体的刷新程序?是因为你没有Uses?

无论如何,只要你的主窗体有窗体名,你就可以通过Form名来调用!

完全可以呀！<br>form1为主窗体，form6为子窗体；<br>一下代码功能是改变主窗体的背景图片。<br>procedure TForm6.BitBtn1Click(Sender: TObject);<br>begin<br>&nbsp; if CheckBox1.Checked then<br>&nbsp; &nbsp; &nbsp;begin<br>&nbsp; &nbsp; &nbsp; &nbsp;Form1.Image1.Center:=True;<br>&nbsp; &nbsp; &nbsp; &nbsp;Form6.WindowState:=wsMinimized;<br>&nbsp; &nbsp; &nbsp;end<br>&nbsp; else<br>&nbsp; &nbsp; &nbsp;begin<br>&nbsp; &nbsp; &nbsp; &nbsp;Form1.Image1.Center:=False;<br>&nbsp; &nbsp; &nbsp; &nbsp;if Image1.Picture.Height=0 then<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ShowMessage('请选择图片');<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end<br>&nbsp; &nbsp; &nbsp; &nbsp;else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Form1.Image1.Picture:=Image1.Picture;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Form6.WindowState:=wsMinimized;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp;end;<br>end;

如果你使用的是模态窗口，用modalresult得到返回值就可以了<br>最简单的例子：<br>procedure TForm2.execute;<br>begin<br>&nbsp; &nbsp; &nbsp;showmodal;<br>&nbsp; &nbsp; &nbsp;if modalresult=mrOK then <br>&nbsp; &nbsp; &nbsp; &nbsp; form3.execute;<br>end;<br>

to ：四界辰砂:<br>&nbsp; &nbsp;应该是完全可以进行刷新的。例如你可以在主窗体<br>&nbsp;调用而打开的子窗体上，单击button1，---主窗体.caption ：='refresh'；<br>&nbsp;只是你需要相互uses 一下，简单方法是Alt +F11，然后在列表中选择。<br>&nbsp;另外对于如何能调用主窗体的方法属性，你可以这样理解：delphi的主窗体单元，<br>&nbsp;相当于C中的main()程序，而子窗体单元，则相当于C中的子程序。而子程序完全可以<br>&nbsp;引用主程序中的变量成员的。<br>&nbsp;

只要在子窗体的implementation后uses 主窗体的unit就可以了。

thanks<br>