C++爱好者 - 网友留言

我用一段代码测试如下：
void __fastcall TForm1::YbCommDevice1CommNotify(TObject *Sender,
      int NotifyType)
{
    AnsiString s;

    if(NotifyType & EV_RXCHAR) //如果 NotifyType 的 RXCHAR 位为 1
    {
        unsigned char Buf[8192];
        int n = YbCommDevice1->Read(Buf,8192);
        if (n==0) return;
        for(int i=0;i           s += IntToHex(Buf[i],2);
        Edit1->Text = s;
        if(s=="238A") Edit1->Text = 1;
        if(s=="2BAA") Edit2->Text = 1;
    }

}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
    char testCommand[2], *EndPtr;

    YbCommDevice1->PortNo = 1;
    YbCommDevice1->Active = true;
    YbCommDevice2->PortNo = 2;
    YbCommDevice2->Active = true;

    testCommand[0] = strtol("23", &EndPtr, 16);
    testCommand[1] = strtol("8A", &EndPtr, 16);

    YbCommDevice2->Write(testCommand,2);

    testCommand[0] = strtol("2B", &EndPtr, 16);
    testCommand[1] = strtol("AA", &EndPtr, 16);

    YbCommDevice2->Write(testCommand,2);
}
//---------------------------------------------------------------------------

如果连续两次Write的话，好像OnCommNotify反应不过来，出来的结果是Edit1的文本为：238A2BAA,而不是238A和2BAA，请问这该如何是好？周五晚上我就有这种情况，我后来弄了个1秒的延时才可以。多谢！

--------------------next---------------------