Add the ability to bind the side mouse buttons (FAForever#96)

Supports the buttons that are identified with `XButton1` and `XButton2`

README.md

@@ -104,6 +104,9 @@ These don't matter except for other assembly patches
     - section/xact_3d_fix.cpp
 - Improvements to lua messages
     - hooks/LuaMessages.cpp
+- Adds the ability to bind the side mouse buttons (XButton1 and XButton2)
+    - hooks/OnWindowMessage.cpp
+    - section/OnWindowMessage.cpp
 
 ## Gameplay
 - Change tick intel update interval from every 30 ticks to every 1 tick

hooks/OnWindowMessage.cpp

@@ -0,0 +1,3 @@
+#include "../define.h"
+asm(".section h0; .set h0,0x00430C0E;"
+    "call " QU(OnWindowMessage) ";");

section/OnWindowMessage.cpp

@@ -0,0 +1,62 @@
+#include "include/global.h"
+
+struct KeyEventInfo
+{
+    unsigned long repeatCount : 16;
+    unsigned long scanCode : 8;
+    unsigned long isExtended : 1;
+    unsigned long reserved : 4;
+    unsigned long contextCode : 1;
+    unsigned long previousState : 1;
+    unsigned long transitionState : 1;
+
+    inline unsigned long ToULong() const
+    {
+        return repeatCount |
+               (scanCode << 16) |
+               (isExtended << 24) |
+               (reserved << 25) |
+               (contextCode << 29) |
+               (previousState << 30) |
+               (transitionState << 31);
+    }
+};
+static_assert(sizeof(KeyEventInfo) == 4);
+
+int __thiscall wxWindow__MSWWindowProc(void *this_, unsigned int uMsg, unsigned int wParam, unsigned long lParam) asm("0x0096D110");
+
+int __thiscall OnWindowMessage(void *this_, unsigned int uMsg, unsigned int wParam, unsigned long lParam)
+{
+    switch (uMsg)
+    {
+    case 0x020B:                                  /*WM_XBUTTONDOWN*/
+        uMsg = 0x0100;                            /*WM_KEYDOWN*/
+        wParam = (((wParam) >> 16) & 0xFFFF) + 4; // VK_XBUTTON(1 or 2)
+        lParam = KeyEventInfo{
+            .repeatCount = 1,
+            .scanCode = 0xFF,
+            .isExtended = 0,
+            .reserved = 0,
+            .contextCode = 0,
+            .previousState = 0,
+            .transitionState = 0}
+                     .ToULong();
+        break;
+    case 0x020C:                                  /*WM_XBUTTONUP*/
+        uMsg = 0x0101;                            /*WM_KEYUP*/
+        wParam = (((wParam) >> 16) & 0xFFFF) + 4; // VK_XBUTTON(1 or 2)
+        lParam = KeyEventInfo{
+            .repeatCount = 1,
+            .scanCode = 0xFF,
+            .isExtended = 0,
+            .reserved = 0,
+            .contextCode = 0,
+            .previousState = 1,
+            .transitionState = 1}
+                     .ToULong();
+        break;
+    default:
+        break;
+    }
+    return wxWindow__MSWWindowProc(this_, uMsg, wParam, lParam);
+}