C++builder 图像字符流的存储和加载

__fastcall TForm6::TForm6(TComponent* Owner)

    : TForm(Owner)

{

#if 1          //for debug

    AllocConsole();

    AttachConsole( GetCurrentProcessId() ) ;

    freopen( "CON", "w", stdout ) ;

#endif

    Image1->Picture->LoadFromFile("HeadImage-UI/Photo-001.bmp");

    strcpy(text,"图片信息.a");

}

//---------------------------------------------------------------------------

void __fastcall TForm6::LoadImageClick(TObject *Sender)

{

    String strFileName = "123.bat";

    //打开或创建目标文件

    int nFileHandle;

    if(FileExists(strFileName))

        nFileHandle = FileOpen(strFileName,fmOpenWrite);

    else

        nFileHandle = FileCreate(strFileName);

    //定位到文件头

    FileSeek(nFileHandle,0x0,);

    //把Image中的位图存入流中

    TMemoryStream *ms = new TMemoryStream;

    Image1->Picture->Bitmap->SaveToStream(ms);

    //先把图片流的大小写入文件中

    DWORD dw = ms->Size;

    FileWrite(nFileHandle,&dw,sizeof(dw));

    //再把图片流吸入文件中

    FileWrite(nFileHandle,ms->Memory,ms->Size);

    //接着写入Edit文本的长度

    dw = strlen(text);

    cout<<dw<<endl;

    FileWrite(nFileHandle,&dw,sizeof(dw));

    //再把Edit的文本写入文件

    FileWrite(nFileHandle,text,dw);

    delete ms;

    FileClose(nFileHandle);

    Image1->Picture->Assign(NULL);

    Edit1->Clear();

}

//---------------------------------------------------------------------------

void __fastcall TForm6::ShowImageClick(TObject *Sender)

{

    String strFileName = "123.bat";

    //打开图片流文件

    int nFileHandle;

    if(FileExists(strFileName))

        nFileHandle = FileOpen(strFileName,fmOpenRead);

    else

    {

        ShowMessage("File not find");

        return;

    }

    //定位到文件头

    FileSeek(nFileHandle,0x0,);

    //先读取图像流的大小

    DWORD dw;

    FileRead(nFileHandle,&dw,sizeof(dw));

    //根据图像流的大小，从文件中读取图像流

    TMemoryStream *ms = new TMemoryStream;

    byte *p = new byte[dw];

    FileRead(nFileHandle,p,dw);

    ms->Write(p,dw);

    delete p;

    //把图像流中的位图显示到Image上面

    ms->Position = ;

    Image1->Picture->Bitmap->LoadFromStream(ms);

    //接着读取文本长度

    FileRead(nFileHandle,&dw,sizeof(dw));

    //然后把指定长度的内容写到Edit中

    char *str = new char[dw*];

    FileRead(nFileHandle,str,dw);

    str[dw]=0x0;

    Edit1->Text = str;

    cout<< dw <<endl;

    delete str;

    delete ms;

}

//---------------------------------------------------------------------------