|
timeGetTime
The timeGetTime function retrieves the system time, in milliseconds. The system time is the
time elapsed since Windows was started.
DWORD timeGetTime(VOID);
Parameters
This function does not take parameters.
Return Values
Returns the system time, in milliseconds.
Remarks
The only difference between this function and the timeGetSystemTime function is that timeGetSystemTime uses the MMTIME structure to return the system time. The timeGetTime function has less overhead than timeGetSystemTime.
Note that the value returned by the timeGetTime function is a DWORD value. The return value wraps around to 0 every 2^32
milliseconds, which is about 49.71 days.This can cause problems in code that
directly uses the timeGetTime return value in computations, particularly where the value is used to control
code execution. You should always use the difference between two timeGetTime return values in computations.
Windows NT: The default precision of the timeGetTime function can be five milliseconds or more, depending on the machine. You can
use the timeBeginPeriod and timeEndPeriod functions to increase the precision of timeGetTime. If you do so, the minimum difference between successive values returned by timeGetTime can be as large as the minimum period value set using timeBeginPeriod and timeEndPeriod. Use the QueryPerformanceCounter and QueryPerformanceFrequency functions to measure short time intervals at a high resolution,
Windows 95: The default precision of the timeGetTime function is 1 millisecond. In other words, the timeGetTime function can return successive values that differ by just 1 millisecond. This
is true no matter what calls have been made to the timeBeginPeriod and timeEndPeriod functions.
See Also
timeGetSystemTime, MMTIME, timeGetTime, timeBeginPeriod, timeEndPeriod, QueryPerformanceCounter, QueryPerformanceFrequency
Related Links
Software for Delphi and C++ Builder developers
Software for Visual Studio .NET developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET
TMS Scripter Studio Pro components for Delphi/C++Builder
More Online Helps
Win32 Programmer's Reference (win32.hlp)
OLE Programmer's Reference (ole.hlp)
Microsoft Windows Pen API Programmer's Reference (penapi.hlp)
Microsoft Windows Sockets 2 Reference (sock2.hlp)
Microsoft Windows Telephony API (TAPI) Programmer's Reference (tapi.hlp)
Unix Manual Pages
|