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  • Use conditions according to the platforms
  • Closing the trace window
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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.
Remarks:
  • TraceStart has no effect if the trace window is already opened.
  • TraceStart is optional. The first call to Trace or to TraceBuild automatically opens the trace window.
Example
Reports and Queries
// Opens the trace window
TraceStart()
...
// Writes into the trace window
Trace("Calculation result: " + ResCalc)
Reports and Queries
// Disable the calls to the Trace function
TraceStart(trDisable)
...
Trace("Calculation result: " + ResCalc)  // Trace has no effect
Reports and Queries
// 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.
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>.

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".
Remarks

Use conditions according to the platforms

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 : wd250vm.dll
See also
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