Important alert: (current site time 5/24/2015 10:32:59 AM EDT)

winzip icon

High Precision Timing Class And Demo

Submitted on: 1/28/2002 2:45:59 PM
By: Chris_Lucas  
Level: Intermediate
User Rating: By 2 Users
Compatibility: VB 5.0, VB 6.0, VBA MS Excel
Views: 5311
author picture
(About the author)
     Most people use GetTickCount and TimeGetTime to compare one chunk of code against another. The problem is, these API calls have terrible resolution. This class puts a friendly face on QueryPerformanceCounter and QueryPerformanceFrequency. The download includes both the class itself, and a small demo app which lets you see how miserable the other two calls perform. Please leave your comments and votes.

winzip iconDownload code

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. Afterdownloading it, you will need a program like Winzip to decompress it.Virus note:All files are scanned once-a-day by Planet Source Code for viruses, but new viruses come out every day, so no prevention program can catch 100% of them. For your own safety, please:
  1. Re-scan downloaded files using your personal virus checker before using it.
  2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
  3. Scan the source code with Minnow's Project Scanner

If you don't have a virus scanner, you can get one at many places on the net

Terms of Agreement:   
By using this code, you agree to the following terms...   
  1. You may use this code in your own programs (and may compile it into a program and distribute it in compiled format for languages that allow it) freely and with no charge.
  2. You MAY NOT redistribute this code (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
  3. You may link to this code from another website, but ONLY if it is not wrapped in a frame. 
  4. You will abide by any additional copyright restrictions which the author may have placed in the code or code's description.

Other 5 submission(s) by this author


Report Bad Submission
Use this form to tell us if this entry should be deleted (i.e contains no code, is a virus, etc.).
This submission should be removed because:

Your Vote

What do you think of this code (in the Intermediate category)?
(The code with your highest vote will win this month's coding contest!)
Excellent  Good  Average  Below Average  Poor (See voting log ...)

Other User Comments

1/28/2002 2:53:07 PMAlmar Joling

Please note that QueryPerformanceCounter is also the slowest to call. Also, don't start using this for everything..basicly it's the same as measuring the length of someone in Um.
GetTickcount precision (10^3)
QPFC precision (10^6)
(If this comment was disrespectful, please report it.)

1/29/2002 9:35:14 AMRobert Rayment

Nice demo. GetTickCount not very good but timeGetTime good enough to nearest millisec or 2.
(If this comment was disrespectful, please report it.)

2/15/2002 12:00:56 PMFireClaw

Impressive idea of using Currency to hold the times (which is a sub-type of decimal which is unavailable directly in VB) :o)

(If this comment was disrespectful, please report it.)


Add Your Feedback
Your feedback will be posted below and an email sent to the author. Please remember that the author was kind enough to share this with you, so any criticisms must be stated politely, or they will be deleted. (For feedback not related to this particular code, please click here instead.)

To post feedback, first please login.