c++ boost--------------boost::progress

c++ boost--------------boost::progress_timer小试。

 1 //---------------------------------------------------------------------------
 2 
 3 #include <vcl.h>
 4 #pragma hdrstop
 5 
 6 #include "Unit4.h"
 7 #include <boost/progress.hpp>
 8 #include <sstream>
 9 using  namespace std;
10 //---------------------------------------------------------------------------
11 #pragma package(smart_init)
12 #pragma resource "*.dfm"
13 TForm4 *Form4;
14 //---------------------------------------------------------------------------
15 __fastcall TForm4::TForm4(TComponent* Owner)
16     : TForm(Owner)
17 {
18 }
19 
20 void test_timer(std::stringstream& ss)
21 {
22     ss.clear();
23     boost::progress_timer t(ss);
24 
25     {
26         //boost::progress_timer t1(ss);
27         Sleep(1000);
28         //Form4->Memo1->Lines->Add((AnsiString)"1--"+ss.str().c_str());
29     }
30 
31     {
32         //boost::progress_timer t2(ss);
33         //boost::progress_timer t(ss);
34         Sleep(2001);
35         //Form4->Memo1->Lines->Add((AnsiString)"2--"+ss.str().c_str());
36     }
37 
38     {
39         //boost::progress_timer t3(ss);
40         //boost::progress_timer t(ss);
41         Sleep(3002);
42         //Form4->Memo1->Lines->Add((AnsiString)"3--"+ss.str().c_str());
43     }
44 }
45 
46 
47 //---------------------------------------------------------------------------
48 void __fastcall TForm4::Button1Click(TObject *Sender)
49 {
50     std::stringstream ss;
51      test_timer(ss);
52     this->Memo1->Lines->Add(ss.str().c_str());
53 }
54 //---------------------------------------------------------------------------