TraceStart (Function)

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Use conditions according to the platforms
Closing the trace window

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TraceStart (Function)

In french: TraceDébut

Warning
From version 17 (78), StartTrace is kept for backward compatibility. This function has been replaced with 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

// Ouvre la fenêtre de trace
TraceStart()
...
// Ecrit dans la fenêtre de trace
Trace("Résultat du calcul : " + ResCalcul)

// Désactiver les appels à la fonction Trace
TraceStart(trDisable)
...
Trace("Résultat du calcul : " + ResCalcul) // Fonction Trace sans effet

Syntax

TraceStart([<Characteristic> [, <Trace file>]])

<Characteristic>: Optional constant

Trace characteristics:
trConsole The trace data is sent to the console.
This constant is not available.
New in SaaS
The constant trConsole corresponds to the default value. The trace window will not be displayed.
the requested information will be displayed in Xcode's standard output window.
the requested information will be stored in the application log (at runtime or in emulation mode). This log can be viewed when the device is connected via USB or when using the emulator from the DDMS application provided with the Android SDK.
Note: This feature is only available from WINDEV Suite SaaS 2025 - Update 3.
For more details, see Using new features exclusive to WINDEV Suite SaaS 2025.
trCreation Clears the trace file.
trDisable All the calls to Trace will be ignored.
trFile The trace window will not be displayed anymore and the information found in the trace window will be saved in the file named <Trace file>.

trTopMost The trace window will be displayed above all system windows.
This constant is not available.
trWindow
(Default value) The trace window is displayed in the upper-left corner of the screen.

The trace window will not be displayed when starting the application.
the requested information will be displayed in the window for standard output of Xcode.
the requested information will be stored in the application log (at runtime or in emulation mode). This log can be viewed when the device is connected via USB or when using the emulator from the DDMS application provided with the Android SDK.
New in SaaS
When testing on the mobilethe trace window is displayed on the device (test via WMDev (for iOS applications), via USB or Wi-Fi).
When running on thethe trace window will be displayed.
Warning: the constant trWindow constant does not correspond to the default value. Note: This feature is only available from WINDEV Suite SaaS 2025 - Update 3.
For more details, see Using new features exclusive to WINDEV Suite SaaS 2025.

trWindow + trFile The 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

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".
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".

If this parameter is not specified, the file is created in the "documents" directory of the application and it is named "Trace_<ProjectName>.txt".

Remarks

Use conditions according to the platforms

The function TraceStart function is used to record the requested information:

in the application log (at runtime or in emulator mode). This log can be viewed when the device is connected via USB or when using the emulator from the DDMS application provided with the Android SDK.
in a specific text file.

The function TraceStart function:

display the requested information in the window for standard output of Xcode.
save the requested information in a specific text file.

Closing the trace window

TraceEnd is used to close the trace window.

If the trFile constant is specified, TraceEnd stops saving to the trace file.

Component: wd300vm.dll