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  • Use conditions according to the platforms
  • Closing the trace window
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Others
Stored procedures
Warning
From version 17 (78), StartTrace is kept for backward compatibility. This function is replaced by TraceStart.
Opens the trace window or saves the trace information in a text file.
Notes:
  • TraceStart has no effect if the trace window is already opened.
  • TraceStart is optional. The first call to Trace automatically opens the trace window.TraceStart is optional. The first call to Trace or to TraceBuild automatically opens the trace window.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
WINDEVUniversal Windows 10 AppJavaUser code (UMC)
// Opens the trace window
TraceStart()
...
// Writes into the trace window
Trace("Calculation result: " + ResCalc)
WINDEVUniversal Windows 10 AppJavaUser code (UMC)
// Disable the calls to the Trace function
TraceStart(trDisable)
...
Trace("Calculation result: " + ResCalc)  // Trace has no effect
WINDEVUser code (UMC)
// Save the information found in
// the trace window in the "C:\Trace\MyFile.txt" file
TraceStart(trFile, "C:\Trace\MyFile.txt")
...
Trace("Calculation result: " + ResCalc)
// No trace window is displayed
// This information will be saved in the "C:\Trace\MyFile.txt" file
Syntax
TraceStart([<Characteristic> [, <Trace file>]])
<Characteristic>: Optional constant
Characteristics of trace:
trCreationClears the trace file.
trTopMostThe trace window will be displayed above all the system windows.
JavaJava This constant is not available.
trDisableAll the calls to Trace will be ignored.
trWindow
(Default value)
The trace window is displayed in the top left corner of the screen.


trFileThe trace window will not be displayed anymore and the information found in the trace window will be saved in the file named <Trace File>.
Linux Only this constant is available. By default, this file is created in the UNIX temporary directory and is named "Trace_<Project>.txt".

trWindow + trFileThe trace window will be displayed and the content of the trace window will also be saved in the file named <Trace File>.
<Trace file>: Optional character string (with quotes)
Name and full path of the file where the information found in the trace window will be saved. If this parameter is not specified, the trace file will be created at the root of the "C" drive and its name will have the following format "Trace_<ProjectName>.txt".
Linux If this parameter is not specified, the trace file will be created in the temporary UNIX directory as "Trace_<ProjectName>.txt".
Java If this parameter is not specified, the file is created in the current directory of the application (known via fCurrentDir) under the name, "Trace_<ProjectName>.txt".
Universal Windows 10 App If this parameter is not specified, the file is created in the data directory of the application (returned by fDataDir) and it is named "Trace_<ProjectName>.txt".
Remarks

Use conditions according to the platforms

Linux TraceStart is used to save the requested information in a file. By default, this file is created in the UNIX temporary directory and is named "Trace_<Project>.txt".

Closing the trace window

TraceEnd is used to close the trace window.
If the trFile constant is specified, TraceEnd stops the backup in the trace file.
Component : wd240vm.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Video Trace
https://youtu.be/scI5wQu-jXk
//
fDelete("C:\TEMP\ARQUIVO.TXT") // ELIMINA ARQUIVOS CASO JA EXISTA
TraceStart(trFile+trWindow,"C:\TEMP\ARQUIVO.TXT")
FOR EACH cliente // ESTOU PERCORRENDO A TABELA CLIENTE // I AM PERCURRING THE CLIENT TABLE // Je passe à la table des clients
Trace(cliente.id_cliente+"|"+cliente.razao_social_nome+"|")
END
TraceEnd() // FINALIZANDO O TRACE // FINISHING THE TRACE // FINITION DE LA TRACE
ShellExecute("C:\TEMP\ARQUIVO.TXT")
amarildo
30 Dec. 2018