publicfunc.pas

delphi 7.0 开发的cdma手机发短信程序

unit PublicFunc;

interface
uses
  Windows,Classes,Messages,SysUtils,Forms,DB, ADODB,ComObj,Contnrs,DateUtils;
type
  //发送串口数据的线程
  TPublicFunc = Class(TObject)
  private
    Post_Event: THandle;//创建事件同步对象的句柄
    hSend : THandle;//发送串口的句柄
    hRecv : THandle;//接收串口的句柄
    Read_os: Toverlapped;//重叠结构的变量
    Receive: Boolean; //开关变量，代表是否接收
  protected
//    procedure Execute; override;

  public
//    constructor Create(CreateSuspended: Boolean;var SortArray: array of Integer);
//    function StartCommProc(frmMsg:TForm):LongBool;//从配置文件中读取配置并启动
    function OpenConnection(CommName:String):boolean;
  published
  end;

implementation
uses setcom;

//function StartCommProc(frmMsg:TForm):LongBool;
//begin
//end;

function TPublicFunc.OpenConnection(CommName:String):boolean;
var
  fRetVal:boolean;
  dcb: TDCB;
  Error: Boolean;
begin
  result := false;
  CommName := form2.ComboBox1.Text;
  // 打开发送串口
  hSend := CreateFile(PChar(CommName), generic_read or generic_write,0,nil, OPEN_EXISTING,FILE_FLAG_OVERLAPPED,0);
  if hSend = INVALID_HANDLE_VALUE then
    raise Exception.Create('打开'+form2.ComboBox1.Text+'端口错误!');

  // 设置输入和输出缓冲区大小
  SetupComm(hSend, 1024, 1024);//对指定设备初始化相关参数
  //设置串口的波特率、字符位数、奇偶校验、停止位
  GetCommState(hSend, dcb);//用指定通信设备的当前控制设置真充设备控制块（DCB)
  dcb.BaudRate := strToInt(form2.ComboBox2.Text);//波特率
  dcb.ByteSize := 8;//字符位数
  dcb.StopBits := 0 ;//0,1,2分别为１，1.5，２
  dcb.Parity := 0;//奇偶校验位
  Error := SetCommState(hSend, dcb);//重新初始化所有硬件和控制设置
  {if (not Error) then
    raise Exception.Create('设置'+ComboBox1.text+'错误');}
  end;
end.