Fix STR # 2485. Triple click must be done with left mouse button to s…

…elect a whole line.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8029 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_Text_Display.cxx

@@ -3669,7 +3669,7 @@ int Fl_Text_Display::handle(int event) {
 	buffer()->unselect(); // clicking in the selection: unselect and move cursor
 	insert_position(dragPos);
 	return 1;
-      } else if (Fl::event_clicks() == DRAG_LINE) {
+      } else if (Fl::event_clicks() == DRAG_LINE && Fl::event_button() == FL_LEFT_MOUSE) {
         buffer()->select(buffer()->line_start(dragPos), buffer()->next_char(buffer()->line_end(dragPos)));
 	dragPos = line_start(dragPos);
 	dragType = DRAG_CHAR;