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UnitMain.cpp：源码内容

							//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "UnitMain.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "MSCommLib_OCX"
#pragma resource "*.dfm"
TFormMain *FormMain;
//---------------------------------------------------------------------------
__fastcall TFormMain::TFormMain(TComponent* Owner)
        : TForm(Owner)
{
}
void __fastcall TFormMain::FormCreate(TObject *Sender)
{
    //打开指定串行口
    MSComm1->PortOpen=true;
}
//---------------------------------------------------------------------------
void __fastcall TFormMain::MSComm1Comm(TObject *Sender)
{
    OleVariant recstr;
    //确认发送了收到有效字符事件
    if(MSComm1->CommEvent==2)
    {
        //从串行口内部接收缓冲区读取字符到内存变量
        recstr=MSComm1->Input;
        //接收的字符追加到主线程接收缓冲区
        MyInput=MyInput+WideString(recstr);
        //实时显示
        RichEdit2->Lines->Text=MyInput;
    }
}
//---------------------------------------------------------------------------
void __fastcall TFormMain::RichEdit1KeyPress(TObject *Sender, char &Key)
{
    WideString str=Key;
    MSComm1->Output=str;
}
//---------------------------------------------------------------------------

						