diff --git a/src/micetools/dll/devices/ser_maitouch.c b/src/micetools/dll/devices/ser_maitouch.c
index df3cdad..9dfe340 100644
--- a/src/micetools/dll/devices/ser_maitouch.c
+++ b/src/micetools/dll/devices/ser_maitouch.c
@@ -108,9 +108,13 @@ static void populateActiveResponse() {
         }
     }
 
-    for (DWORD i = 0; i < nActiveTouches; i++) {
-        handleOneButton(w, h, activeTouches[i].m_X, activeTouches[i].m_Y);
-    }
+    MICE_DA_ITER(g_activeTouches, ACTIVE_TOUCH, i) {
+        handleOneButton(w, h, i->m_X, i->m_Y);
+    } MICE_DA_ITER_END
+
+    // for (DWORD i = 0; i < nActiveTouches; i++) {
+    //     handleOneButton(w, h, activeTouches[i].m_X, activeTouches[i].m_Y);
+    // }
 }
 
 BOOL touch_is_enabled = TRUE;  // Default on is important!
diff --git a/src/micetools/dll/hooks/gui.c b/src/micetools/dll/hooks/gui.c
index d33c1f3..2016c52 100644
--- a/src/micetools/dll/hooks/gui.c
+++ b/src/micetools/dll/hooks/gui.c
@@ -247,49 +247,25 @@ void register_gui_hook(FnEndScene* end_scene) {
     *head = hook;
 }
 
-DWORD nActiveTouches = 0;
-ACTIVE_TOUCH* activeTouches = NULL;
-extern DWORD nActiveTouchesMax = 0;
+MICE_DA_NEW(g_activeTouches, ACTIVE_TOUCH)
 
 void SetTouch(UINT id, INT x, INT y, BOOL state) {
     if (state) {
-        // If we can just update in place, do
-        for (DWORD i = 0; i < nActiveTouches; i++) {
-            if (activeTouches[i].m_Id == id) {
-                activeTouches[i].m_X = x;
-                activeTouches[i].m_Y = y;
+        MICE_DA_ITER(g_activeTouches, ACTIVE_TOUCH, i) {
+            if (i->m_Id == id) {
+                i->m_X = x;
+                i->m_Y = y;
                 return;
             }
         }
-
-        // Dynamic array re-allocation
-        if (nActiveTouches == nActiveTouchesMax) {
-            DWORD newSize = nActiveTouchesMax * 2 + 1;
-            ACTIVE_TOUCH* newMemory = realloc(activeTouches, sizeof *activeTouches * newSize);
-            if (newMemory != activeTouches) {
-                memcpy(newMemory, activeTouches, sizeof *activeTouches * nActiveTouchesMax);
-            }
-            activeTouches = newMemory;
-            nActiveTouchesMax = newSize;
-        }
-
-        // Store into end of DA
-        activeTouches[nActiveTouches].m_Id = id;
-        activeTouches[nActiveTouches].m_X = x;
-        activeTouches[nActiveTouches].m_Y = y;
-        nActiveTouches++;
+        MICE_DA_ITER_END
+        ACTIVE_TOUCH touch = { .m_Id = id, .m_X = x, .m_Y = y };
+        MiceDAPush(g_activeTouches, &touch);
     } else {
-        for (DWORD i = 0; i < nActiveTouches; i++) {
-            if (activeTouches[i].m_Id == id) {
-                // Copy backwards
-                for (DWORD j = i + 1; j < nActiveTouches; j++) {
-                    activeTouches[j - 1].m_Id = activeTouches[j].m_Id;
-                    activeTouches[j - 1].m_X = activeTouches[j].m_X;
-                    activeTouches[j - 1].m_Y = activeTouches[j].m_Y;
-                }
-                nActiveTouches--;
-            }
+        MICE_DA_ITER(g_activeTouches, ACTIVE_TOUCH, i) {
+            if (i->m_Id == id) MICE_DA_REMOVE_CURRENT(g_activeTouches);
         }
+        MICE_DA_ITER_END
     }
 }
 
@@ -413,7 +389,8 @@ void SetupWindowPosition(LPRECT lpRect, DWORD dwStyle) {
         //     RECT adjustedRect;
         //     memcpy(&adjustedRect, lpRect, sizeof *lpRect);
         //     UnadjustWindowRect(&adjustedRect, dwStyle, FALSE);
-        //     // We're going to only adjust y, on the assumption x is unchanged, and even if it is
+        //     // We're going to only adjust y, on the assumption x is unchanged, and even if it
+        //     is
         //     // it'll be symmetic. y has the titlebar to worry about.
         //     int outerH = adjustedRect.bottom - adjustedRect.top;
 
diff --git a/src/micetools/dll/hooks/gui.h b/src/micetools/dll/hooks/gui.h
index b3fce91..7d0fda6 100644
--- a/src/micetools/dll/hooks/gui.h
+++ b/src/micetools/dll/hooks/gui.h
@@ -48,8 +48,10 @@ typedef struct {
     INT m_X;
     INT m_Y;
 } ACTIVE_TOUCH;
-extern DWORD nActiveTouches;
-extern ACTIVE_TOUCH* activeTouches;
+// extern DWORD nActiveTouches;
+// extern ACTIVE_TOUCH* activeTouches;
+
+extern PMICE_DA g_activeTouches;
 
 BOOL UnadjustWindowRect(LPRECT prc, DWORD dwStyle, BOOL fMenu);
 extern HWND mainWindow;
diff --git a/src/micetools/dll/util/misc.c b/src/micetools/dll/util/misc.c
index fd1137c..c94c6c0 100644
--- a/src/micetools/dll/util/misc.c
+++ b/src/micetools/dll/util/misc.c
@@ -42,74 +42,58 @@ BOOL FileExistsA(const char* szPath) {
     return (dwAttrib != INVALID_FILE_ATTRIBUTES && !(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
 }
 
-typedef struct _handle_list {
+typedef struct HANDLE_DATA {
     HANDLE m_Handle;
     PVOID m_pData;
     DWORD m_Type;
     BOOL m_IsOnHeap;
-    struct _handle_list* m_Next;
-} handle_list_t;
-handle_list_t handle_list_root = {
-    .m_Handle = INVALID_HANDLE_VALUE,
-    .m_pData = NULL,
-    .m_Type = 0xffffffff,
-    .m_IsOnHeap = FALSE,
-    .m_Next = NULL,
-};
+} HANDLE_DATA;
+MICE_DA_NEW(g_handleData, HANDLE_DATA)
 
 PVOID GetDataForHandle(HANDLE hObject, DWORD type) {
     if (hObject == INVALID_HANDLE_VALUE) return NULL;
 
-    handle_list_t* head = &handle_list_root;
-    while (head) {
-        if (head->m_Handle == hObject && (type == HDATA_ANY || head->m_Type == type))
-            return head->m_pData;
-        head = head->m_Next;
+    MICE_DA_ITER(g_handleData, HANDLE_DATA, i) {
+        if (i->m_Handle == hObject && (type == HDATA_ANY || i->m_Type == type)) {
+            return i->m_pData;
+        }
     }
+    MICE_DA_ITER_END
     return NULL;
 }
 void SetDataForHandle(HANDLE hObject, DWORD type, PVOID pData, BOOL isHeap) {
     if (hObject == INVALID_HANDLE_VALUE) return;
 
-    handle_list_t* head = &handle_list_root;
-    while (1) {
-        if (head->m_Handle == hObject && (type == HDATA_ANY || head->m_Type == type)) {
-            if (head->m_IsOnHeap) free(head->m_pData);
-            head->m_pData = pData;
-            head->m_IsOnHeap = isHeap;
+    MICE_DA_ITER(g_handleData, HANDLE_DATA, i) {
+        if (i->m_Handle == hObject && (type == HDATA_ANY || i->m_Type == type)) {
+            if (i->m_IsOnHeap) free(i->m_pData);
+            i->m_pData = pData;
+            i->m_IsOnHeap = isHeap;
             return;
         }
-        if (head->m_Next == NULL) break;
-        head = head->m_Next;
     }
-    head->m_Next = malloc(sizeof *head);
-    head->m_Next->m_Handle = hObject;
-    head->m_Next->m_pData = pData;
-    head->m_Next->m_Next = NULL;
-    head->m_Next->m_IsOnHeap = isHeap;
-    head->m_Next->m_Type = type;
+    MICE_DA_ITER_END
+
+    HANDLE_DATA newHandleData = {
+        .m_Handle = hObject,
+        .m_pData = pData,
+        .m_IsOnHeap = isHeap,
+        .m_Type = type,
+    };
+    MiceDAPush(g_handleData, &newHandleData);
 }
 BOOL RemoveDataForHandle(HANDLE hObject, DWORD type) {
     if (hObject == INVALID_HANDLE_VALUE) return FALSE;
 
-    handle_list_t* head = &handle_list_root;
-    handle_list_t* previous = &handle_list_root;
-    BOOL ret = FALSE;
-    while (head) {
-        if (head->m_Handle == hObject && (type == HDATA_ANY || head->m_Type == type)) {
-            previous->m_Next = head->m_Next;
-            if (head->m_IsOnHeap) free(head->m_pData);
-            handle_list_t* next = head->m_Next;
-            free(head);
-            head = next;
-            if (type != HDATA_ANY) return TRUE;
-            ret = TRUE;
-        } else {
-            previous = head;
-            head = head->m_Next;
+    MICE_DA_ITER(g_handleData, HANDLE_DATA, i) {
+        if (i->m_Handle == hObject && (type == HDATA_ANY || i->m_Type == type)) {
+            if (i->m_IsOnHeap) free(i->m_pData);
+            MICE_DA_REMOVE_CURRENT(g_handleData);
+            return TRUE;
         }
     }
-    return ret;
+    MICE_DA_ITER_END
+    return FALSE;
 }
 
 HANDLE GetDummyHandle() {
diff --git a/src/micetools/lib/mice/da.c b/src/micetools/lib/mice/da.c
new file mode 100644
index 0000000..6c19b87
--- /dev/null
+++ b/src/micetools/lib/mice/da.c
@@ -0,0 +1,87 @@
+#include "da.h"
+
+#include <malloc.h>
+#include <stdlib.h>
+
+static inline void _MiceDAGrow(PMICE_DA lpDa) {
+    DWORD_PTR newSize = lpDa->m_Capacity * 2 + 1;
+    if (lpDa->m_Array) {
+        LPVOID newArray = realloc(lpDa->m_Array, lpDa->m_Size * newSize);
+        if (newArray != lpDa->m_Array) {
+            memcpy(newArray, lpDa->m_Array, lpDa->m_Size * lpDa->m_Capacity);
+        }
+        lpDa->m_Array = newArray;
+    } else {
+        lpDa->m_Array = malloc(lpDa->m_Size * newSize);
+    }
+    lpDa->m_Capacity = newSize;
+}
+
+BOOL MiceDAPush(PMICE_DA lpDa, LPVOID lpSrc) {
+    if (!lpDa || !lpSrc) return FALSE;
+    if (lpDa->m_Capacity == lpDa->m_Length) _MiceDAGrow(lpDa);
+
+    _MICE_DA_COPY_INTO_DA(lpDa, lpDa->m_Length, lpSrc);
+    lpDa->m_Length++;
+    return TRUE;
+}
+BOOL MiceDAPop(PMICE_DA lpDa, LPVOID lpDst) {
+    if (!lpDa) return FALSE;
+    if (lpDa->m_Length == 0) return FALSE;
+    lpDa->m_Length--;
+    if (lpDst) _MICE_DA_COPY_OUTOF_DA(lpDa, lpDa->m_Length, lpDst);
+    return TRUE;
+}
+
+BOOL MiceDAShift(PMICE_DA lpDa, LPVOID lpSrc) {
+    if (!lpDa || !lpSrc) return FALSE;
+    if (lpDa->m_Capacity == lpDa->m_Length) _MiceDAGrow(lpDa);
+
+    // Copy every value one index forwards
+    for (DWORD_PTR i = lpDa->m_Length; i; i--) {
+        memcpy(_MICE_DA_INDEX_P(lpDa, i), _MICE_DA_INDEX_P(lpDa, i + 1), lpDa->m_Size);
+    }
+    _MICE_DA_COPY_INTO_DA(lpDa, 0, lpSrc);
+    lpDa->m_Length++;
+    return TRUE;
+}
+BOOL MiceDAUnshift(PMICE_DA lpDa, LPVOID lpDst) {
+    if (!lpDa) return FALSE;
+    if (lpDst) _MICE_DA_COPY_OUTOF_DA(lpDa, 0, lpDst);
+    lpDa->m_Length--;
+    // Copy every value one index back
+    for (DWORD_PTR i = 0; i < lpDa->m_Length; i++) {
+        memcpy(_MICE_DA_INDEX_P(lpDa, i), _MICE_DA_INDEX_P(lpDa, i + 1), lpDa->m_Size);
+    }
+    return TRUE;
+}
+BOOL MiceDASet(PMICE_DA lpDa, DWORD_PTR dwIndex, LPVOID lpValue) {
+    if (!lpDa || !lpValue) return FALSE;
+    if (dwIndex >= lpDa->m_Length) return FALSE;
+    _MICE_DA_COPY_INTO_DA(lpDa, dwIndex, lpValue);
+    return TRUE;
+}
+LPVOID MiceDAGet(PMICE_DA lpDa, DWORD_PTR dwIndex) {
+    if (!lpDa) NULL;
+    if (dwIndex >= lpDa->m_Length) return NULL;
+    return _MICE_DA_INDEX_P(lpDa, dwIndex);
+}
+
+BOOL MiceDARemove(PMICE_DA lpDa, DWORD_PTR dwIndex) {
+    if (!lpDa) return FALSE;
+    if (dwIndex > lpDa->m_Length) return FALSE;
+    if (dwIndex == lpDa->m_Length) {
+        lpDa->m_Length--;
+        return TRUE;
+    }
+    lpDa->m_Length--;
+    for (DWORD_PTR i = dwIndex; i < lpDa->m_Length; i++) {
+        memcpy(_MICE_DA_INDEX_P(lpDa, i), _MICE_DA_INDEX_P(lpDa, i + 1), lpDa->m_Size);
+    }
+    return TRUE;
+}
+
+DWORD_PTR MiceDALength(PMICE_DA lpDa) {
+    if (!lpDa) _invalid_parameter_noinfo_noreturn();
+    return lpDa->m_Length;
+}
diff --git a/src/micetools/lib/mice/da.h b/src/micetools/lib/mice/da.h
new file mode 100644
index 0000000..e1bb09e
--- /dev/null
+++ b/src/micetools/lib/mice/da.h
@@ -0,0 +1,35 @@
+#include <Windows.h>
+
+typedef struct MICE_DA {
+    DWORD_PTR m_Capacity;
+    DWORD_PTR m_Length;
+    DWORD_PTR m_Size;
+    LPVOID m_Array;
+} MICE_DA, *PMICE_DA;
+#define MICE_DA_NEW(name, type)                                                 \
+    MICE_DA __mda##name = {                                                     \
+        .m_Capacity = 0, .m_Length = 0, .m_Size = sizeof(type), .m_Array = NULL \
+    };                                                                          \
+    PMICE_DA name = &__mda##name;
+
+#define _MICE_DA_INDEX_P(lpDa, index) \
+    (LPVOID)((DWORD_PTR)((lpDa)->m_Array) + (index) * (lpDa)->m_Size)
+#define _MICE_DA_COPY_INTO_DA(lpDa, index, value) \
+    memcpy(_MICE_DA_INDEX_P((lpDa), (index)), (value), (lpDa)->m_Size)
+#define _MICE_DA_COPY_OUTOF_DA(lpDa, index, value) \
+    memcpy((value), _MICE_DA_INDEX_P((lpDa), (index)), (lpDa)->m_Size)
+
+#define MICE_DA_ITER(lpDa, type, name)                                                  \
+    for (DWORD_PTR __mdaI##lpDa = 0; __mdaI##lpDa < (lpDa)->m_Length; __mdaI##lpDa++) { \
+        type* name = (type*)_MICE_DA_INDEX_P((lpDa), __mdaI##lpDa);
+#define MICE_DA_ITER_END }
+#define MICE_DA_REMOVE_CURRENT(lpDa) MiceDARemove((lpDa), __mdaI##lpDa)
+
+BOOL MiceDAPush(PMICE_DA lpDa, LPVOID lpSrc);
+BOOL MiceDAPop(PMICE_DA lpDa, LPVOID lpDst);
+BOOL MiceDAShift(PMICE_DA lpDa, LPVOID lpSrc);
+BOOL MiceDAUnshift(PMICE_DA lpDa, LPVOID lpDst);
+BOOL MiceDASet(PMICE_DA lpDa, DWORD_PTR dwIndex, LPVOID lpValue);
+LPVOID MiceDAGet(PMICE_DA lpDa, DWORD_PTR dwIndex);
+BOOL MiceDARemove(PMICE_DA lpDa, DWORD_PTR dwIndex);
+DWORD_PTR MiceDALength(PMICE_DA lpDa);
diff --git a/src/micetools/lib/mice/meson.build b/src/micetools/lib/mice/meson.build
index ead8596..71ae8bb 100644
--- a/src/micetools/lib/mice/meson.build
+++ b/src/micetools/lib/mice/meson.build
@@ -14,6 +14,7 @@ mice_lib = static_library(
         'dmi.c',
         'ipc.c',
         'serial.c',
+        'da.c',
     ],
     link_with: [
         inih.get_variable('lib_inih'),
diff --git a/src/micetools/lib/mice/mice.h b/src/micetools/lib/mice/mice.h
index 839a1b7..bb10938 100644
--- a/src/micetools/lib/mice/mice.h
+++ b/src/micetools/lib/mice/mice.h
@@ -13,6 +13,7 @@
 #include "log.h"
 #include "patch.h"
 #include "ringbuf.h"
+#include "da.h"
 
 #define SRAM_PATH MiceIpcRelativePath("sram.bin")
 
diff --git a/src/micetools/util/meson.build b/src/micetools/util/meson.build
index 9170011..a3a06d6 100644
--- a/src/micetools/util/meson.build
+++ b/src/micetools/util/meson.build
@@ -91,3 +91,13 @@ executable(
         amSram,
     ],
 )
+executable(
+    'mice_test',
+    win_subsystem: subsystem,
+    sources: [
+        'test.c',
+    ],
+    link_with: [
+        mice_lib
+    ],
+)
diff --git a/src/micetools/util/test.c b/src/micetools/util/test.c
new file mode 100644
index 0000000..e798311
--- /dev/null
+++ b/src/micetools/util/test.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+
+#include "../lib/mice/mice.h"
+
+MICE_DA_NEW(testDa, int)
+
+int main(int argc, char** argv) {
+    printf("length = %d\n", MiceDALength(testDa));
+    for (int i = 0; i < 10; i++) MiceDAPush(testDa, &i);
+    printf("length = %d\n", MiceDALength(testDa));
+    for (int i = 0; i < 10; i++) printf("[%d]: %d\n", i, *(int*)MiceDAGet(testDa, i));
+
+    MICE_DA_ITER(testDa, int, test) {
+        printf("iter: %d\n", *test);
+    } MICE_DA_ITER_END
+
+    puts("Pop");
+    MiceDAPop(testDa, NULL);
+    MICE_DA_ITER(testDa, int, test) {
+        printf("iter: %d\n", *test);
+    } MICE_DA_ITER_END
+
+    puts("Unshift");
+    MiceDAUnshift(testDa, NULL);
+    MICE_DA_ITER(testDa, int, test) {
+        printf("iter: %d\n", *test);
+    } MICE_DA_ITER_END
+
+    puts("Remove 1");
+    MiceDARemove(testDa, 1);
+    MICE_DA_ITER(testDa, int, test) {
+        printf("iter: %d\n", *test);
+    } MICE_DA_ITER_END
+
+    return 0;
+}
\ No newline at end of file