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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: It timing is stopped, it can be restarted by ChronoResume.
The value of the stopwatch can be read at any time:
  • with ChronoValue.
  • Versions 24 and later
    via the ..Value property of the Chrono variable.
    New in version 24
    via the ..Value property of the Chrono variable.
    via the ..Value property of the Chrono variable.
Versions 17 and later
iPhone/iPad This function is now available for Windows Phone applications.
Universal Windows 10 App This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for Windows Phone applications.
Universal Windows 10 App This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for Windows Phone applications.
Universal Windows 10 App This function is now available for 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("MyFunction() process lasted" + DurationMyFunction, ...
"The whole process lasted " + DurationChronoStart)
Versions 24 and later
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)
MyChrono1 is Chrono
MyChrono2 is Chrono
// Start the first stopwatch
ChronoStart(MyChrono1)
// Start the second stopwatch
ChronoStart(MyChrono2)
// Stop the first stopwatch
DurationChronoStart is Duration = ChronoEnd(MyChrono1)
MyFunction()
// Stop the second stopwatch
DurationMyFunction is Duration = ChronoEnd(MyChrono2)
Info("The MyFunction() process lasted " + DurationMyFunction, ...
"The whole process lasted " + DurationChronoStart)
New in version 24
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)
MyChrono1 is Chrono
MyChrono2 is Chrono
// Start the first stopwatch
ChronoStart(MyChrono1)
// Start the second stopwatch
ChronoStart(MyChrono2)
// Stop the first stopwatch
DurationChronoStart is Duration = ChronoEnd(MyChrono1)
MyFunction()
// Stop the second stopwatch
DurationMyFunction is Duration = ChronoEnd(MyChrono2)
Info("The MyFunction() process lasted " + DurationMyFunction, ...
"The whole process lasted " + DurationChronoStart)
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)
MyChrono1 is Chrono
MyChrono2 is Chrono
// Start the first stopwatch
ChronoStart(MyChrono1)
// Start the second stopwatch
ChronoStart(MyChrono2)
// Stop the first stopwatch
DurationChronoStart is Duration = ChronoEnd(MyChrono1)
MyFunction()
// Stop the second stopwatch
DurationMyFunction is Duration = ChronoEnd(MyChrono2)
Info("The MyFunction() process lasted " + DurationMyFunction, ...
"The whole process lasted " + DurationChronoStart)
Syntax

Timing with a stopwatch number Hide the details

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.
Versions 24 and later
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)

Timing with a Chrono variable Hide the details

ChronoStart(<Stopwatch>)
<Stopwatch>: Chrono variable
Name of the Chrono variable corresponding to the stopwatch to use.
New in version 24
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)

Timing with a Chrono variable Hide the details

ChronoStart(<Stopwatch>)
<Stopwatch>: Chrono variable
Name of the Chrono variable corresponding to the stopwatch to use.
Reports and QueriesWindowsLinuxiPhone/iPadApple WatchWindows MobileUniversal Windows 10 AppUser code (UMC)

Timing with a Chrono variable Hide the details

ChronoStart(<Stopwatch>)
<Stopwatch>: Chrono variable
Name of the Chrono variable corresponding to the stopwatch to use.
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.
Component : wd240vm.dll
Minimum version required
  • Version 10
This page is also available for…
Comments
Video ChronoStart
https://youtu.be/HsQBVdHh_PE
https://windevdesenvolvimento.blogspot.com/2019/07/dicas-2207-windev-webdev-mobile.html
//PROCEDURE CONTADOR_TEMPO()
nCONTADOR is int=0
LOOP
Message(nCONTADOR)
nCONTADOR++
IF nCONTADOR>6000 THEN
BREAK
END
END
// BTN_CONTADOR_TEMPO
ChronoStart()
CONTADOR_TEMPO()
duRacao_tempo is Duration=ChronoEnd()
Info("TEMPO:"+duRacao_tempo..Hour+"HR "+duRacao_tempo..Minute+"MI "+duRacao_tempo..Second)
amarildo
19 Jul. 2019