+/* static */
+bool wxGLCanvasBase::IsExtensionInList(const char *list, const char *extension)
+{
+ if ( !list )
+ return false;
+
+ for ( const char *p = list; *p; p++ )
+ {
+ // advance up to the next possible match
+ p = wxStrstr(p, extension);
+ if ( !p )
+ break;
+
+ // check that the extension appears at the beginning/ending of the list
+ // or is preceded/followed by a space to avoid mistakenly finding
+ // "glExtension" in a list containing some "glFunkyglExtension"
+ if ( (p == list || p[-1] == ' ') )
+ {
+ char c = p[strlen(extension)];
+ if ( c == '\0' || c == ' ' )
+ return true;
+ }
+ }
+
+ return false;
+}
+