关于系统变量TDUSRTIMER 和 AcDbDate对象

XDSoft

问题：

About TDUSRTIMER and AcDbDate

解答：

The TDUSRTIMER system variable does not store the elapsed milliseconds, but instead stores the time elapsed form the last reset in a Julian date format. The easiest way to get the time elapsed in seconds is to use the AcDbDate class.

1. void ASDKgetTime()
   
2. {
   
3.   struct resbuf rUsrTime;
   
4.   acedGetVar(_T("TDUSRTIMER"), &rUsrTime);
   
5. 
   
6.   AcDbDate testDate ;
   
7.   testDate.setJulianFraction(rUsrTime.resval.rreal) ;
   
8. 
   
9.   acutPrintf (
   
10.     _T("\nMinute: %d\nSec: %d\nMilisec: %d"),
    
11.     testDate.minute (),
    
12.     testDate.second (),
    
13.     testDate.millisecond ()) ;
    
14. }
    

void ASDKgetTime()<br /> {<br />   struct resbuf rUsrTime;<br />   acedGetVar(_T("TDUSRTIMER"), &rUsrTime);<br /> <br />   AcDbDate testDate ;<br />   testDate.setJulianFraction(rUsrTime.resval.rreal) ;<br /> <br />   acutPrintf (<br />     _T("\nMinute: %d\nSec: %d\nMilisec: %d"),<br />     testDate.minute (),<br />     testDate.second (),<br />     testDate.millisecond ()) ;<br /> }<br />