VC++.NET 2003托管MDI程序中子窗体如何访问父窗体?

[snowman163254]

如题!分不够再加!!

[snowman163254]

如在VC++.NET 2003 Test托管程序中,有两Form1 和Form2,Form1为父窗体,Form2为子窗体.
Form1中引用#include "Form2.h"头文件
private: System::Void Form1_Load(System::Object * sender, System::EventArgs * e)
{
Test::Form2 * form2 = new Test::Form2();
form2->MdiParent = this;
form2->Show();
}

Form2中引用#include "Form1.h"头文件
private: System::Void Form2_Load(System::Object * sender, System::EventArgs * e)
{
Test::Form1 * form1 ;
form1 = dynamic_cast<Test::Form1 *>(this->MdiParent);
form1->Text = "AAA";
}

这样写为什么会出错？该怎样实现父子窗体之间相互调用？

[snowman163254]

UP!!!!!!

[CW_Wei]

up

[snowman163254]

UP!!!

[蒋晟]

__gc theMDIParentForm* theParent = (theMDIParentForm*) this->MDIParent;