Trace (Function)

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WLanguage functions

Standard functions

Windows management functions

Miscellaneous WINDEV functions

WLanguage procedure

Trace

Presentation

Example

Use conditions according to the platforms

Trace window

Context menu of the trace window

Special case

See also

ExecuteJS

AJAXCallInProgress

AddVoiceCommand

AutomationEvent

AutomationParameter

Beep

BuildAutomationVariant

Calling a DLL written in Visual Basic

Clone

CommandLine

Compile (Example)

Compile

Component

ComponentInfo (Example)

ComponentInfo

ConfigureAAF

Constants for WLanguage types

Constants for sound management

Constants used by ExecutePresetAction

Constants used by the TraceStart function

DataType (Example)

DataType

DeleteVoiceCommand

Dimension (Example)

Dimension

DisableAAF

DrawingStyle

EndAutomatedProcedure

EndProgram

EvaluateExpression

Execute

ExecuteAAF

ExecuteAncestor

ExecuteCode

ExecuteFunction

ExecuteJS

ExecutePresetAction

ExecuteProcess

ExecutionMode

GenerateGeometricImage

GenerateLorem

GeneratePassword

GetColor

GetGUID

GetIdentifier

GetUUID256

GetUUID

HelpFile

INIRead (Example)

INIRead

INIWrite

In64bitMode

InAJAXMode

InAWPMode

InAndroidEmulatorMode

InAndroidMode (Example)

InAndroidMode

InAndroidSimulatorMode

InAppleWatchEmulatorMode

InAppleWatchMode

InAppleWatchSimulatorMode

InAutomaticTestMode

InBackgroundMode

InComponentMode

InDelayedProcedureMode

InDeviceOwnerMode

InFactoryMode

InJavaMode

InKioskMode

InLinuxMode

InMacCatalystMode

InPHPMode

InPHPSimulatorMode

InPageWithinWindowMode

InPocketSimulatorMode

InPrelaunchedSessionMode

InReportsAndQueriesMode

InServiceMode (Example)

InServiceMode

InSimulatorMode

InStoredProcedureMode

InSysNotificationMode

InTSEMode

InTestMode

InUMCMode

InUniversalWindowsAppMode

InUniversalWindowsAppSimulatorMode

InUniversalWindowsPlatformMode

InUniversalWindowsPlatformSimulatorMode

InVGAMode

InWebMode

InWebSocketServerGlobalServiceMode

InWebSocketServerMode

InWebserviceMode

InWidgetMode

InWinRTMode

InWinRTSimulatorMode

InWindowsMobileMode

InWindowsMode

InWindowsPhoneEmulatorMode

InWindowsPhoneMode

InWindowsPhoneSimulatorMode

InWindowsStoreAppMode

InWindowsStoreAppSimulatorMode

IniOSEmulatorMode

IniOSMode

IniOSSimulatorMode

InitRandom

IsNumeric

LargeFontFactor

LoadProcedure

LoadWDL (Example)

LoadWDL

NumHelp

OpenDocument

OpenDocumentAsynchronous

ProfilerEnd

ProfilerStart

Random

RandomCryptoBuffer

RandomCryptoInteger

RunReportsAndQueries

SelectColor

Sound

StyleDrawCaptionGrayed

TelemetryEnable

Trace

TraceBuild

TraceDeleteAll

TraceEnd

TraceStart

TypeVar

UnloadProcedure

UnloadWDL

VariableReset

VariantConvert

Various constants

Various functions

Voice commands in your applications

WHelp

WINDEVVersion

diffApply

diffCreate

Use conditions according to the platforms
Trace window
Context menu of the trace window
Special case

WINDEV

WEBDEV

WINDEV Mobile

Others

See also

Trace (Function)

In french: Trace

Not available

Displays the requested information (content of a control, for example) in a window opened next to the current window.

Remark: Trace is useful during the development process to check whether a program runs properly. In the editor, the "Debugger trace" pane displays the information from the trace window as well as the errors encountered.

Example

// Display information in the trace window
Trace("Calculation result: " + ResCalc)

Syntax

Trace(<Information> [, <Additional information 1> [... [, <Additional information N>]]])

<Information>: Any type

Set of elements that will be displayed in the trace window.

<Additional information 1>: Any type (optional)

Additional information to be displayed in the trace window. It will be displayed on the same line as <Information>.

<Additional information N>: Any type (optional)

Additional information to be displayed in the trace window. It will be displayed on the same line as <Information>.

Remarks

Use conditions according to the platforms

Trace can be used to display the requested information in a file only. By default, this file is created in the UNIX temporary directory and is named "Trace_<Project>.txt".

The information of Trace is displayed at the beginning of the HTML page returned.

The trace window is displayed in test mode ("Go" option) only for dynamic pages (other than Active WEBDEV Pages).
In AWP and deployment mode, Trace can only be used to write the specified information to a file (trFile constant used with TraceStart).

Trace displays requested information in the Xcode standard output window.

Trace saves the requested information in the application log ("ADB log") at runtime or in emulator mode. This information appears in the "Info" section.

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.

For more details, see Managing ADB logs.

Trace window

The information passed as parameter is displayed on the next line of the trace window.
The trace window opens automatically the first time Trace is called (TraceStart is executed automatically). By default, this window is opened in the upper-left corner of the screen.
Trace is similar to Info but the information is displayed in another window and no key needs to be pressed.
The trace window displayed from a Browser code is different from the one displayed from a Server code. Therefore, two different trace windows can be opened at the same time.

Context menu of the trace window

The context menu of the trace window allows you to:

copy/cut/paste the content of trace window.
save the content of the trace window in a text file.
Caution: This option is available only if the wdxxxstd.dll library is on the end-user computer.
clear the contents of the trace window.
open the trace window on top of all the other windows (including the windows from the other applications).
save the size and position of the trace window when it is closed. When this window is displayed again, it will keep the size and position saved.
display a horizontal scrollbar.
display special characters in gray or use them directly: EOT, TAB, etc. Therefore, the "Carriage Return" (CR) characters in the trace window are represented as "<\r><\n>".
Remark: This option will be taken into account from the next line of information displayed.

Special case

PageDisplay and PageRefresh cannot be used after Trace.

If PageDisplay and PageRefresh are used, a warning message will be displayed by the PHP engine.

Component: wd270vm.dll