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Stored procedures
Starts a stopwatch to find out the duration of a process (in milliseconds) and resets an existing stopwatch. The timing is stopped: If the stopwatch is stopped, it can be restarted by ChronoResume.
The value of the stopwatch can be read at any time by ChronoValue.
Versions 17 and later
iPhone/iPad This function is now available for the Windows Phone applications.
Universal Windows 10 App This function is now available for the iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for the Windows Phone applications.
Universal Windows 10 App This function is now available for the iPhone/iPad applications.
iPhone/iPad This function is now available for the Windows Phone applications.
Universal Windows 10 App This function is now available for the iPhone/iPad applications.
Versions 18 and later
Android Widget This function is now available in Android Widget mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Android Widget This function is now available in Android Widget mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Android Widget This function is now available in Android Widget mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Apple Watch This function is now available in Apple Watch mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Apple Watch This function is now available in Apple Watch mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Apple Watch This function is now available in Apple Watch mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
// Start the stopwatch
ChronoStart()
MyFunction()
// Stop the stopwatch
DurationMyFunction is Duration = ChronoEnd()
Info("The MyFunction() process lasted " + DurationMyFunction)
// Start the first stopwatch
ChronoStart(1)
// Start the second stopwatch
ChronoStart(2)
// Stop the first stopwatch
DurationChronoStart is Duration = ChronoEnd(1)
MyFunction()
// Stop the second stopwatch
DurationMyFunction is Duration = ChronoEnd(2)

Info("The MyFunction() process lasted " + DurationMyFunction, ...
"The ChronoStart(2) process lasted " + DurationChronoStart)
Syntax
ChronoStart([<Stopwatch Number>])
<Stopwatch Number>: Optional integer
Identifier of stopwatch used.
If this parameter is not specified, its default value is set to 1.
If this number corresponds to an existing stopwatch, this stopwatch is reset to zero.
Remarks

Error

A WLanguage error occurs ("The stopwatch is not started") if ChronoStart was not called before ChronoValue and ChronoEnd.

Threads and parallel tasks

Each thread (and each parallel task) includes its own stopwatches.
Two distinct threads (or two distinct parallel tasks) can perform separate timings by using the same stopwatch number.
The WLanguage error "The stopwatch is not started" will occur only if ChronoStart is not called in the same thread (or in the same parallel task) as ChronoValue and ChronoEnd.
Related Examples:
The Chrono functions Unit examples (WINDEV): The Chrono functions
[ + ] Using the ChronoXXX functions.
These functions are used to calculate the time passed between the start (ChronoStart) and the end (ChronoEnd).
Calculations on durations Unit examples (WINDEV): Calculations on durations
[ + ] Calculations on dates and times with the WLanguage functions:
- Calculate the duration between two moments (dates and times)
- Calculate a sum of durations
- Calculate an average of durations
The Chrono functions Unit examples (WINDEV Mobile): The Chrono functions
[ + ] Using the WLanguage "Chrono" functions.
These functions are used to calculate the time passed between the start (ChronoStart) and the end (ChronoEnd).
UWA Stopwatch Universal Apps (WINDEV Mobile): UWA Stopwatch
[ + ] This example explains how to create a stopwatch for a mobile device with WINDEV Mobile.
In this example, a timer is used to display the hands of the stopwatch and to display the time passed on a regular basis.
Components
WINDEVWEBDEV - Server codeReports and Queries wd230vm.dll
Windows Mobile wp230vm.dll
Java wd230java.jar
Linux wd230vm.so
Android wd230android.jar
Minimum required version
  • Version 10
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