unit1.cpp

这是一个封装得比较完整的串口类接口

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

#include <vcl.h>
#pragma hdrstop

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

}
//---------------------------------------------------------------------------
void  TForm1::On_Receive(TMessage& Message)
{
        AnsiString s = AnsiString(Message.WParam);
        char xx[100];
        int len ;

        if((len = com2.read(xx, 100)) > 0)
        {
                s += AnsiString("(") + len + ") : ";
                s += xx;
                Memo1->Lines->Add(s);
        }
}

void __fastcall TForm1::Button1Click(TObject *Sender)
{
         if(!com2.open(2))
                ShowMessage("Open Fail.");
         com2.set_hwnd(Handle);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
        com2.close();
}
//---------------------------------------------------------------------------