Hi Stas,
the problem is that sleep() and a-synchronous timers both use SIGALRM
and they interfere. With the lastest ROOT (2.00/10) you can do it without
MyTimer all in Loop() like this:
void MyWin::Loop() {
while(gFlag) {
fprintf(stderr,"loop");
sleep(1);
gSystem->ProcessEvents();
}
}
Cheers, Fons.
Stanislav Terechtchenko wrote:
>
> Hi Rooters.
> I have the simple GUI code. If the call sleep(1) in method
> MyWin::Loop() is commented everything works well, otherwise
> there is no more reaction on the button click. Any hints?
> Thank you.
> Stas.
>
> ------------------------------------------------------------
> #include <stdlib.h>
> #include "TROOT.h"
> #include "TApplication.h"
> #include "TGClient.h"
> #include "TGFrame.h"
> #include "TGButton.h"
> #include "TTimer.h"
> #include "TSystem.h"
>
> Int_t gFlag = 0;
>
> class MyTimer : public TTimer {
> public:
> MyTimer(Long_t ms = 1000, Bool_t mode = kFALSE) : TTimer(ms, mode) {}
> Bool_t Notify() {
> fprintf(stderr,"Notify\t");
> gClient->HandleInput();
> Reset();
> fprintf(stderr,"OK\n");
> return kFALSE;
> }
> };
>
> class MyWin : public TGMainFrame {
> TGTextButton *fButton;
> MyTimer *fTimer;
> public:
> MyWin(const TGWindow *p, UInt_t w, UInt_t h);
> virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t);
> void Loop();
> };
>
> MyWin::MyWin(const TGWindow *p, UInt_t w, UInt_t h) : TGMainFrame(p, w, h)
> {
> fButton = new TGTextButton(this,"Click here",150);
> fButton->Associate(this);
> MapSubwindows();
> MapWindow();
> fTimer = new MyTimer();
> gSystem->AddTimer(fTimer);
> }
>
> Bool_t MyWin::ProcessMessage(Long_t msg, Long_t parm1, Long_t)
> {
> switch (GET_MSG(msg)) {
> case kC_COMMAND:
> switch (GET_SUBMSG(msg)) {
> case kCM_BUTTON:
> case kCM_MENU:
> switch (parm1) {
> case 150:
> if(gFlag) gFlag = 0;
> else {
> gFlag = 1;
> Loop();
> }
> default:
> break;
> }
> default:
> break;
> }
> default:
> break;
> }
> return kTRUE;
> }
>
> void MyWin::Loop() {
> while(gFlag) {
> fprintf(stderr,"loop");
> // sleep(1);
> }
> }
>
> extern void InitGui();
> VoidFuncPtr_t initfuncs[] = { InitGui, 0 };
>
> TROOT root("GGG", "GGG test environement", initfuncs);
>
> main(int argc, char **argv)
> {
> TApplication theApp("App", &argc, argv);
> new MyWin(gClient->GetRoot(), 400, 220);
> // TBrowser *br = new TBrowser("browser","H2 Root online browser");
> theApp.Run();
> return 0;
> }
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland Phone: +41 22 7679248
E-Mail: Fons.Rademakers@cern.ch Fax: +41 22 7677910
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