On 14 May 98 at 11:48, Hans Wenzel wrote:
It is C++ scope problem.
You defined the hpx object(s) inside of one scope and tried to use
it within another one. It made no sense with the CINT interpreter
since if one doesn't supply any definition, ROOT (CINT) defines the
global object of the proper type alone. But one should avoid this
CINT feature to be able to compile his macro code with a "native"
compiler.
So to be compiled your code should looks as follow (this is Ok for
ROOT/CINT as well)
>
>
> #include "TROOT.h"
> #include "TApplication.h"
> #include "TCanvas.h"
> #include "TLine.h"
> #include "TPaveLabel.h"
> #include "TFile.h"
> #include "TH1.h"
> #include "TH2.h"
> #include "TProfile.h"
> #include "TNtuple.h"
> #include "TRandom.h"
> #include "TSocket.h"
> #include "TServerSocket.h"
> #include "TInetAddress.h"
> #include "TPad.h"
> #include "TMessage.h"
> #include "TMonitor.h"
> #include "TBenchmark.h"
>
> int main()
> {
> TROOT hclient("hclient","Test of simple histogram client");
>
> gROOT->Reset();
>
> gBenchmark->Start("hclient");
>
> // Open connection to server
> TSocket *sock = new TSocket("localhost", 9090);
>
> // Wait till we get the start message
> char str[32];
> sock->Recv(str, 32);
>
> // server tells us who we are
> int idx = !strcmp(str, "go 0") ? 0 : 1;
TH1F *h1px = 0;
TH2F *h2px = 0;
> if (idx == 0) {
> // Create the histogram
h1px = new TH1F("hpx","This is the px
> TH1F *hpx = new TH1F("hpx","This is the px
> distribution",100,-4,4); // hpx->SetFillColor(48); //
> set nice fillcolor
> } else {
h2px = new TH2F("hpxpy","py vs px",40,-4,4,40,-4,4);
> TH2F *hpx = new TH2F("hpxpy","py vs px",40,-4,4,40,-4,4);
> }
>
> TMessage mess(kMESS_OBJECT);
> //TMessage mess(kMESS_OBJECT | kMESS_ACK);
>
> // Fill histogram randomly
> gRandom->SetSeed();
> Float_t px, py;
> const int kUPDATE = 1000;
> for (int i = 0; i < 25000; i++) {
> gRandom->Rannor(px,py);
> if (idx == 0)
h1px->Fill(px);
> hpx->Fill(px);
> else
h2px->Fill(px,py);
> hpx->Fill(px,py);
> if (i && (i%kUPDATE) == 0) {
> mess.Reset(); // re-use TMessage object
> mess.WriteObject(hpx); // write object in message
> buffer sock->Send(mess); // send message
> }
> }
> sock->Send("Finished"); // tell server we are finished
>
> gBenchmark->Show("hclient");
>
> // Close the socket
> sock->Close();
>
>
>
> return 0;
> }
>
=================================================================
Dr. Valeri Faine (Fine)
------------------- Phone: +1 516 344 7806
Brookhaven National Laboratory FAX : +1 516 344 4206
Bldg. 510A /STAR mailto:fine@bnl.gov
Upton, New York, 11973-5000 http://nicewww.cern.ch/~fine
USA
Dr. Valery Fine Telex : 911621 dubna su
-----------
LCTA/Joint Inst.for Nuclear Res. Phone : +7 09621 6 40 80
141980 Dubna, Moscow region Fax : +7 09621 6 51 45
Russia mailto:fine@main1.jinr.dubna.su
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