独立 ROOT 应用程序不会在关闭 canvas 时终止

Question

我正在制作一个独立的 ROOT 应用程序，它应该在关闭 canvas 时终止。以下是我的实验代码

#include "TROOT.h"
#include "TApplication.h"
#include "TCanvas.h"

int main(){
TApplication *myapp=new TApplication("myapp",0,0);
TCanvas *c1 =new TCanvas("c1","Canvas Test",800,800);
c1->Connect("TCanvas", "Closed()", "TApplication",gApplication, "Terminate()");
myapp->Run();
return 0;
}

代码编译时没有任何警告。当我运行它时 canvas 打开。但是当我关闭 canvas 时，应用程序没有终止，终端也没有提示。有什么建议吗？

_ROOT Version: 6.20
_Platform: Ubuntu 20.04
_Compiler: g++

Answer 1

感谢来自 root-forum 的@bellenot 提供以下解决方案。显然，对于 ROOT 6 及以上版本，这应该使用 TRootCanvas 对象来完成。

#include "TROOT.h"
#include "TApplication.h"
#include "TCanvas.h"
#include "TRootCanvas.h"

int main()
{
   TApplication *myapp = new TApplication("myapp", 0, 0);
   TCanvas *c1 = new TCanvas("c1","Canvas Test",800,800);
   TRootCanvas *rc = (TRootCanvas *)c1->GetCanvasImp();
   rc->Connect("CloseWindow()", "TApplication", gApplication, "Terminate()");
   myapp->Run();
   return 0;
}

独立 ROOT 应用程序不会在关闭 canvas 时终止

Standalone ROOT application doesn’t terminate upon closing a canvas

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