无模式对话框

[mazhichao84]

代码：
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
#include "Unit2.h"
TForm1 *Form1;
bool bOpen;
TMyModelessDlg *MyModelessDlg;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::OpenClick(TObject *Sender)
{if(!bOpen)
{MyModelessDlg=new TMyModelessDlg(this);
MyModelessDlg->Show();
bOpen=true;
MyModelessDlg->parentForm=this;
}

}
//---------------------------------------------------------------------------

void __fastcall TForm1::FormCreate(TObject *Sender)
{
bOpen=false;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::CloseClick(TObject *Sender)
{
if(bOpen)
{delete MyModelessDlg;
MyModelessDlg=0;
bOpen=false;
}
}
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm2 *Form2;
//---------------------------------------------------------------------------
__fastcall TForm2::TForm2(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------


void __fastcall TForm2::ListBox1Click(TObject *Sender)
{
parentForm2->Edit1->Text=ListBox1->ItemsString[LisrBox1->ItemIndex];
}
//---------------------------------------------------------------------------


错误提示：
Build
[C++ Error] Unit1.cpp(13): E2141 Declaration syntax error
[C++ Error] Unit1.cpp(23): E2451 Undefined symbol 'MyModelessDlg'
[C++ Error] Unit1.cpp(23): E2303 Type name expected
[C++ Error] Unit1.cpp(23): E2379 Statement missing ;
[C++ Error] Unit1.cpp(41): E2451 Undefined symbol 'MyModelessDlg'
哪位帮我解决一下，谢谢！！！

[ccrun.com]

TMyModelessDlg 一看就是一个自定义的窗体或对话框。缺少对这个窗体的声明部分。

[ytfhwfnh]

TMyModelessDlg *MyModelessDlg;
这一句是啥意思？我只看到你定义的TForm1跟TForm2。如果你另外定义了一个TMyModelessDlg窗体，只需要#include 它的头文件，而不用把上面那样的定义自己写进来。

[mazhichao84]

TMyModelessDlg *MyModelessDlg;
这个吗
我也不是很清楚
应该是个特殊函数