--- a/QTfrontend/sdlkeys.cpp	Tue Apr 30 22:43:48 2019 +0200
+++ b/QTfrontend/sdlkeys.cpp	Wed May 01 00:09:01 2019 +0200
@@ -22,6 +22,7 @@
 
 char sdlkeys[1024][2][128] =
 {
+    // Mouse
     {"mousel", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: Left button")},
     {"mousem", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: Middle button")},
     {"mouser", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: Right button")},
@@ -29,6 +30,8 @@
     {"mousex2", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: X2 button")},
     {"wheelup", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: Wheel up")},
     {"wheeldown", QT_TRANSLATE_NOOP("binds (keys)", "Mouse: Wheel down")},
+
+    // Keyboard
     {"backspace", QT_TRANSLATE_NOOP("binds (keys)", "Backspace")},
     {"tab", QT_TRANSLATE_NOOP("binds (keys)", "Tab")},
     {"clear", QT_TRANSLATE_NOOP("binds (keys)", "Clear")},
@@ -139,6 +142,9 @@
     {"left_gui", QT_TRANSLATE_NOOP("binds (keys)", "Left GUI")}
 };
 
+// helper list for sdlkeys. true for keyboard keys, false for other
+bool sdlkeys_iskeyboard[1024];
+
 // button name definitions for Microsoft's XBox360 controller
 // don't modify button order!
 char xb360buttons[10][128] =