log_displayer

---

title: Log Displayer description: published: true date: 2023-03-16T22:59:07.199Z tags: editor: markdown dateCreated: 2022-03-07T13:32:48.109Z

A displayer is an output destination for logging. NeL provides several useful displayers by default. You have the ability to create a myriad of custom displayers to suit whatever your needs may be. For network services (any NeL application that inherits from IService or uses the NLNET_SERVICE_MAIN macro) you can configure which displayer to use by using the "WindowStyle" configuration variable.

Name	Style	Description
StdDisplayer	NONE (default on Unix)	This is a displayer that outputs to the standard output (console.)
WinDisplayer	WIN (default on Windows)	This displayer uses MFC to format logging in a readable console. This displayer works on Windows only.
GtkDisplayer	GTK (not compiled by default)	This displayer uses GTK to format logging primarily for Linux.
MemDisplayer	N/A	This displayer displays into memory and can be dumped after, if necessary.
FileDisplayer	N/A	This displayer displays output into a text file.
MsgBoxDisplayer	N/A	This displays a string of text to a message box. This displayer works on Windows only.
NetDisplayer	N/A	This displays logging to a logging service through the NLNET "LOG" message.

WinDisplayer on Windows running the Naming Service

missing image http://www.opennel.org/confluence/download/thumbnails/1376258/ns.JPG {.is-danger}

GtkDisplayer on Linux running the Naming Service

missing image http://opennel.org/confluence/download/attachments/1376258/gtk_displayer_2.png {.is-danger}