如何：检索自启动以来经过的时间 (C++/CLI)
下面的代码示例演示如何确定刻度计数，或自 Windows 启动以来已经流逝的毫秒数。 此值存储在 Environment.TickCount 成员中，并且由于该值为 32 位值，因此大约每 24.9 天就会重置为零。
示例
// startup_time.cpp
// compile with: /clr
using namespace System;
int main( )
{
Int32 tc = Environment::TickCount;
Int32 seconds = tc / 1000;
Int32 minutes = seconds / 60;
float hours = static_cast<float>(minutes) / 60;
float days = hours / 24;
Console::WriteLine("Milliseconds since startup: {0}", tc);
Console::WriteLine("Seconds since startup: {0}", seconds);
Console::WriteLine("Minutes since startup: {0}", minutes);
Console::WriteLine("Hours since startup: {0}", hours);
Console::WriteLine("Days since startup: {0}", days);
return 0;
}