diff --git a/prboom2/src/SDL/i_video.c b/prboom2/src/SDL/i_video.c
index ac8fae201..18c897fe4 100644
--- a/prboom2/src/SDL/i_video.c
+++ b/prboom2/src/SDL/i_video.c
@@ -292,6 +292,8 @@ int I_SDLtoDoomMouseState(Uint32 buttonstate)
       ;
 }
 
+static event_t delay_event;
+
 static void I_GetEvent(void)
 {
   event_t event;
@@ -299,6 +301,8 @@ static void I_GetEvent(void)
   SDL_Event SDLEvent;
   SDL_Event *Event = &SDLEvent;
 
+  I_DelayEvent();
+
   while (SDL_PollEvent(Event))
   {
     switch (Event->type) {
@@ -361,26 +365,33 @@ static void I_GetEvent(void)
       case SDL_MOUSEWHEEL:
         if (mouse_enabled && window_focused)
         {
+          int button = -1;
+
           if (Event->wheel.y > 0)
           {
-            event.data1.i = KEYD_MWHEELUP;
-
-            event.type = ev_keydown;
-            D_PostEvent(&event);
-
-            event.type = ev_keyup;
-            D_PostEvent(&event);
+            button = KEYD_MWHEELUP;
           }
           else if (Event->wheel.y < 0)
           {
-            event.data1.i = KEYD_MWHEELDOWN;
+            button = KEYD_MWHEELDOWN;
+          }
+          else if (Event->wheel.x < 0)
+          {
+            button = KEYD_MWHEELLEFT;
+          }
+          else if (Event->wheel.x > 0)
+          {
+            button = KEYD_MWHEELRIGHT;
+          }
 
-            event.type = ev_keydown;
-            D_PostEvent(&event);
+          // post a button down event
+          event.data1.i = button;
+          event.type = ev_mouseb_down;
+          D_PostEvent(&event);
 
-            event.type = ev_keyup;
-            D_PostEvent(&event);
-          }
+          // hold button for one tic, required for checks in G_BuildTiccmd
+          delay_event.data1.i = button;
+          delay_event.type = ev_mouseb_up;
         }
         break;
 
@@ -422,6 +433,16 @@ static void I_GetEvent(void)
   }
 }
 
+// Pulled from Woof
+void I_DelayEvent(void)
+{
+  if (delay_event.data1.i)
+  {
+    D_PostEvent(&delay_event);
+    delay_event.data1.i = 0;
+  }
+}
+
 //
 // I_StartTic
 //
diff --git a/prboom2/src/am_map.c b/prboom2/src/am_map.c
index bb3615290..f91f9c5c9 100644
--- a/prboom2/src/am_map.c
+++ b/prboom2/src/am_map.c
@@ -1073,7 +1073,7 @@ dboolean AM_Responder
   }
   else if (
     dsda_InputActivated(dsda_input_map_zoomout) ||
-    (map_wheel_zoom && ev->type == ev_keydown && ev->data1.i == KEYD_MWHEELDOWN)
+    (map_wheel_zoom && ev->type == ev_mouseb_down && ev->data1.i == KEYD_MWHEELDOWN)
   )
   {
     mtof_zoommul = M_ZOOMOUT;
@@ -1085,7 +1085,7 @@ dboolean AM_Responder
   }
   else if (
     dsda_InputActivated(dsda_input_map_zoomin) ||
-    (map_wheel_zoom && ev->type == ev_keydown && ev->data1.i == KEYD_MWHEELUP)
+    (map_wheel_zoom && ev->type == ev_mouseb_down && ev->data1.i == KEYD_MWHEELUP)
   )
   {
     mtof_zoommul = M_ZOOMIN;
@@ -1164,7 +1164,7 @@ dboolean AM_Responder
     dsda_InputDeactivated(dsda_input_map_zoomout) ||
     dsda_InputDeactivated(dsda_input_map_zoomin) ||
     (
-      map_wheel_zoom && ev->type == ev_keyup &&
+      map_wheel_zoom && ev->type == ev_mouseb_up &&
       (ev->data1.i == KEYD_MWHEELDOWN || ev->data1.i == KEYD_MWHEELUP)
     )
   )
diff --git a/prboom2/src/d_event.h b/prboom2/src/d_event.h
index 8faaee3c2..6ee5bc1c0 100644
--- a/prboom2/src/d_event.h
+++ b/prboom2/src/d_event.h
@@ -48,6 +48,8 @@ typedef enum
 {
   ev_keydown,
   ev_keyup,
+  ev_mouseb_down,
+  ev_mouseb_up,
   ev_mouse,
   ev_mousemotion,
   ev_joystick,
diff --git a/prboom2/src/d_main.c b/prboom2/src/d_main.c
index d85474c40..41ff1b570 100644
--- a/prboom2/src/d_main.c
+++ b/prboom2/src/d_main.c
@@ -209,7 +209,7 @@ void D_PostEvent(event_t *ev)
       // use key is used for seeing the current frame
       if (
         !dsda_InputActivated(dsda_input_use) && !dsda_InputActivated(dsda_input_demo_skip) &&
-        (ev->type == ev_keydown || ev->type == ev_keyup) // is this condition important?
+        (ev->type == ev_keydown || ev->type == ev_keyup || ev->type == ev_mouseb_down || ev->type == ev_mouseb_up) // is this condition important?
       )
       {
         return;
diff --git a/prboom2/src/doomdef.h b/prboom2/src/doomdef.h
index 1b71a57e2..c5b43c9b2 100644
--- a/prboom2/src/doomdef.h
+++ b/prboom2/src/doomdef.h
@@ -396,6 +396,8 @@ typedef enum {
 #define KEYD_MOUSE3     (0x80 + 0x62)
 #define KEYD_MWHEELUP   (0x80 + 0x6b)
 #define KEYD_MWHEELDOWN (0x80 + 0x6c)
+#define KEYD_MWHEELLEFT (0X80 + 0X6d)
+#define KEYD_MWHEELRIGHT (0X80 + 0X6e)
 
 // phares 3/20/98:
 //
diff --git a/prboom2/src/dsda/input.c b/prboom2/src/dsda/input.c
index 7455292d9..63a81939c 100644
--- a/prboom2/src/dsda/input.c
+++ b/prboom2/src/dsda/input.c
@@ -90,6 +90,12 @@ void dsda_InputTrackEvent(event_t* ev) {
     case ev_keyup:
       dsda_InputTrackKeyUp(ev);
       break;
+    case ev_mouseb_down:
+      dsda_InputTrackKeyDown(ev);
+      break;
+    case ev_mouseb_up:
+      dsda_InputTrackKeyUp(ev);
+      break;
     case ev_mouse:
       dsda_InputTrackButtons(mousebuttons, MAX_MOUSE_BUTTONS, ev);
       break;
@@ -142,6 +148,12 @@ void dsda_InputTrackGameEvent(event_t* ev) {
     case ev_keyup:
       dsda_InputTrackGameKeyUp(ev);
       break;
+    case ev_mouseb_down:
+      dsda_InputTrackGameKeyDown(ev);
+      break;
+    case ev_mouseb_up:
+      dsda_InputTrackGameKeyUp(ev);
+      break;
     case ev_mouse:
       dsda_InputTrackGameButtons(mousebuttons, MAX_MOUSE_BUTTONS, ev);
       break;
diff --git a/prboom2/src/f_finale.c b/prboom2/src/f_finale.c
index 651e84868..631c12743 100644
--- a/prboom2/src/f_finale.c
+++ b/prboom2/src/f_finale.c
@@ -617,7 +617,7 @@ void F_CastTicker (void)
 
 dboolean F_CastResponder (event_t* ev)
 {
-  if (ev->type != ev_keydown)
+  if (ev->type != ev_keydown && ev->type != ev_mouseb_down)
     return false;
 
   if (castdeath)
diff --git a/prboom2/src/g_game.c b/prboom2/src/g_game.c
index d21f6ff4a..1323ebe2b 100644
--- a/prboom2/src/g_game.c
+++ b/prboom2/src/g_game.c
@@ -1380,6 +1380,12 @@ dboolean G_Responder (event_t* ev)
     case ev_keydown:
       return true;    // eat key down events
 
+    case ev_mouseb_up:
+      return true;
+
+    case ev_mouseb_down:
+      return true;
+
     case ev_mousemotion:
     {
       double value;
diff --git a/prboom2/src/heretic/f_finale.c b/prboom2/src/heretic/f_finale.c
index dabba154f..d3a3e10aa 100644
--- a/prboom2/src/heretic/f_finale.c
+++ b/prboom2/src/heretic/f_finale.c
@@ -90,7 +90,7 @@ dboolean F_BlockingInput(void)
 
 dboolean Heretic_F_Responder(event_t * event)
 {
-  if (event->type != ev_keydown)
+  if (event->type != ev_keydown && event->type != ev_mouseb_down)
   {
     return false;
   }
diff --git a/prboom2/src/i_video.h b/prboom2/src/i_video.h
index 2cacf3d34..8fb900137 100644
--- a/prboom2/src/i_video.h
+++ b/prboom2/src/i_video.h
@@ -65,6 +65,7 @@ void I_SetPalette(int pal); /* CPhipps - pass down palette number */
 void I_QueueFrameCapture(void);
 void I_QueueScreenshot(void);
 void I_HandleCapture(void);
+void I_DelayEvent(void);
 
 void I_FinishUpdate (void);
 
diff --git a/prboom2/src/m_menu.c b/prboom2/src/m_menu.c
index f62e9a6ec..3805a9600 100644
--- a/prboom2/src/m_menu.c
+++ b/prboom2/src/m_menu.c
@@ -3993,6 +3993,8 @@ int M_GetKeyString(int c,int offset)
       case KEYD_PAUSE:      s = "PAUS"; break;
       case KEYD_MWHEELDOWN: s = "MWDN"; break;
       case KEYD_MWHEELUP:   s = "MWUP"; break;
+      case KEYD_MWHEELLEFT: s = "MWLT"; break;
+      case KEYD_MWHEELRIGHT: s = "MWRT"; break;
       case KEYD_PRINTSC:    s = "PRSC"; break;
       case 0:               s = "NONE"; break;
       default:              s = "JUNK"; break;
@@ -5622,14 +5624,14 @@ int M_EventToCharacter(event_t* ev)
       }
     }
   }
-  else if (ev->type == ev_keydown)
+  else if (ev->type == ev_keydown || ev->type == ev_mouseb_down)
   {
     if (ev->data1.i == KEYD_RSHIFT) // phares 4/11/98
       shiftdown = true;
 
     return ev->data1.i;
   }
-  else if (ev->type == ev_keyup)
+  else if (ev->type == ev_keyup || ev->type == ev_mouseb_up)
   {
     if (ev->data1.i == KEYD_RSHIFT) // phares 4/11/98
       shiftdown = false;