Template for directory name, as in g_mkdtemp(), basename only, or NULL for a default template. [type filename][allow-none]
The actual name used. This string should be freed with g_free() when not needed any longer and is is in the GLib file name encoding. In case of errors, NULL is returned and error will be set. [type filename]
GException on failure.
Creates a subdirectory in the preferred directory for temporary files (as returned by g_get_tmp_dir()). tmpl should be a string in the GLib file name encoding containing a sequence of six 'X' characters, as the parameter to g_mkstemp(). However, unlike these functions, the template should only be a basename, no directory components are allowed. If template is NULL, a default template is used. Note that in contrast to g_mkdtemp() (and mkdtemp()) tmpl is not modified, and might thus be a read-only literal string. Since 2.30