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 with the name "Trace_<Project>.txt".

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

For WEBDEV pages:

• 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).

For Mobile applications:

• In the simulatorthe trace window is displayed.
• 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).
  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.
• In execution:
  • 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.
  • New in SaaS
    The trace window can be displayed using function TraceStart with the constant trWindow.
    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.

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. It can be moved. The new position is automatically saved.
• 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.

New in SaaS

Special features on mobile:

• The trace window is:
  • finger-moveable via title bar.
  • resizable by fingertip.
• By default, the trace window has a size of 200x200 and is positioned in the bottom right-hand corner of the screen.
• The trace window can be rolled up or down using the.
• Text size can be changed with a finger (pinch).
• The trace window cannot leave the screen.
• The trace window is always displayed on top of all application windows.
• It can be displayed in the project initialization code or via a secondary thread.
• The trace window cannot be displayed from a widget or background process.

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.

Context menu of the trace window

• copy/cut/paste the content of trace window.
• save the content of the trace window in a text file.
  Note: This option is only available if the wdxxxstd.dll library is present on the end-user workstation.
• 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 control characters: Special characters will be displayed in grayed and literal form: EOT, TAB, etc. Therefore, the "Carriage Return" (CR) characters in the trace window are represented as "<\r><\n>".
  Note: This option will only be taken into account from the next line of information displayed.

New in SaaS

Special features on mobile: The context menu offers the following options:

• Copy / copy all trace window contents.
• clear the contents of the trace window.
• show or hide control characters.

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.