| WXTRACE | (Debug build only.) This variable can be set to a comma-separated list of trace masks used in wxLogTrace calls; wxLog::AddTraceMask is called for every mask in the list during wxWidgets initialization. |
| WXPREFIX | (Unix only.) Overrides installation prefix. Normally, the prefix is hard-coded and is the same as the value passed to configure via the --prefix switch when compiling the library (typically /usr/local or /usr). You can set WXPREFIX if you are for example distributing a binary version of an application and you don't know in advance where it will be installed. |
| WXMODE | (wxMGL only.) Sets MGL video mode. The value must be in form widthxheight-depth. The default is 640x480-16. |
| WXSTDERR | (wxMGL only.) Redirects stderr output to a file. |