本RS232的元件是由書本[c++ Builder與RS232串列通訊控制]內ch4所附的元件.    安裝方式: step1:把TComm資料夾copy到C:\Program Files\Borland\CBuilder5    step2:開啟BCB5    step3:進入Compoment--->Install Component--->在Into existing package中的Unit file name中按       Browse按鈕,設路徑為C:\Program Files\Borland\CBuilder5\TComm       選Comm.cpp     step4: 安裝完,關閉BCB5,並儲存檔案.    step5:開啟BCB5,可以在上面一排元件中的system中看到TComm元件(一個9pin的Rs232端子,下方數字1010)    setp6:安裝完成.    [運用]    開啟:  Comm1->PortOpen = true;    傳送:  Comm1->OutputByte(ByteSend);    接收:  ByteReceive=Comm1->ReadInputByte();    關閉:  Comm1->PortOpen=false;    全域變數的宣告:     DynamicArray ByteSend,ByteReceive; String rdata[255]; [範例]16進制傳送和接收 功能說明: Button1:傳送資料 Timer1:自動接收資料 //--------------------------------------------------------------------------- #include #pragma hdrstop #include #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma link "Comm" #pragma resource "*.dfm" TForm1 *Form1; DynamicArray ByteSend,ByteReceive; String rdata[255]; long i; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { Comm1->PortOpen = true; ShowMessage("Comm1已開啟"); Timer1->Enabled=true; //自動接收 } //--------------------------------------------------------------------------- void Delay(DWORD DT) { long tt; tt=GetTickCount(); while (GetTickCount()-ttProcessMessages(); if ((GetTickCount()-tt)<=0) tt=GetTickCount(); } } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { ByteSend.Length =4; ByteSend[0] = 0x01; ByteSend[1] = 0x03; ByteSend[2] = 0x0c; ByteSend[3] = 0x00; Comm1->OutputByte(ByteSend);//傳送出去 Delay(1000); //延遲100毫秒 //--------------------------------------------------------------------------- void __fastcall TForm1::Timer1Timer(TObject *Sender) { Delay(100); //延遲100毫秒 ByteReceive=Comm1->ReadInputByte(); for(i=0;i