diff --git a/Source/diablo.cpp b/Source/diablo.cpp
index 4ecdf1c3b..e61341f8f 100644
--- a/Source/diablo.cpp
+++ b/Source/diablo.cpp
@@ -495,25 +495,21 @@ LRESULT CALLBACK DisableInputWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
 	case WM_LBUTTONDOWN:
 		if (sgbMouseDown == 0) {
 			sgbMouseDown = 1;
-			SetCapture(hWnd);
 		}
 		return 0;
 	case WM_LBUTTONUP:
 		if (sgbMouseDown == 1) {
 			sgbMouseDown = 0;
-			ReleaseCapture();
 		}
 		return 0;
 	case WM_RBUTTONDOWN:
 		if (sgbMouseDown == 0) {
 			sgbMouseDown = 2;
-			SetCapture(hWnd);
 		}
 		return 0;
 	case WM_RBUTTONUP:
 		if (sgbMouseDown == 2) {
 			sgbMouseDown = 0;
-			ReleaseCapture();
 		}
 		return 0;
 	case WM_CAPTURECHANGED:
@@ -558,7 +554,6 @@ LRESULT CALLBACK GM_Game(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		MouseY = HIWORD(lParam);
 		if (sgbMouseDown == 0) {
 			sgbMouseDown = 1;
-			SetCapture(hWnd);
 			track_repeat_walk(LeftMouseDown(wParam));
 		}
 		return 0;
@@ -569,7 +564,6 @@ LRESULT CALLBACK GM_Game(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 			sgbMouseDown = 0;
 			LeftMouseUp();
 			track_repeat_walk(FALSE);
-			ReleaseCapture();
 		}
 		return 0;
 	case WM_RBUTTONDOWN:
@@ -577,7 +571,6 @@ LRESULT CALLBACK GM_Game(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		MouseY = HIWORD(lParam);
 		if (sgbMouseDown == 0) {
 			sgbMouseDown = 2;
-			SetCapture(hWnd);
 			RightMouseDown();
 		}
 		return 0;
@@ -586,7 +579,6 @@ LRESULT CALLBACK GM_Game(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		MouseY = HIWORD(lParam);
 		if (sgbMouseDown == 2) {
 			sgbMouseDown = 0;
-			ReleaseCapture();
 		}
 		return 0;
 	case WM_CAPTURECHANGED:
@@ -611,7 +603,6 @@ LRESULT CALLBACK GM_Game(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		music_stop();
 		track_repeat_walk(FALSE);
 		sgbMouseDown = 0;
-		ReleaseCapture();
 		ShowProgress(uMsg);
 		drawpanflag = 255;
 		DrawAndBlit();
diff --git a/Source/multi.cpp b/Source/multi.cpp
index 5b83de77c..5690b7e47 100644
--- a/Source/multi.cpp
+++ b/Source/multi.cpp
@@ -702,7 +702,6 @@ BOOL NetInit(BOOL bSinglePlayer, BOOL *pfExitProgram)
 		plrdata.size = sizeof(plrdata);
 		memset(&UiData, 0, sizeof(UiData));
 		UiData.size = sizeof(UiData);
-		UiData.parentwindow = SDrawGetFrameWindow(NULL);
 		UiData.artcallback = (void (*)())UiArtCallback;
 		UiData.createcallback = (void (*)())UiCreateGameCallback;
 		UiData.drawdesccallback = (void (*)())UiDrawDescCallback;
diff --git a/Source/objects.cpp b/Source/objects.cpp
index 2a84f0c9b..b16044dfa 100644
--- a/Source/objects.cpp
+++ b/Source/objects.cpp
@@ -1534,7 +1534,6 @@ void Obj_Circle(int i)
 			AddMissile(plr[myplr].WorldX, plr[myplr].WorldY, 35, 46, plr[myplr]._pdir, MIS_RNDTELEPORT, 0, myplr, 0, 0);
 			track_repeat_walk(0);
 			sgbMouseDown = 0;
-			ReleaseCapture();
 			ClrPlrPath(myplr);
 			StartStand(myplr, 0);
 		}
diff --git a/Source/palette.cpp b/Source/palette.cpp
index 59b91be81..66eca3fa2 100644
--- a/Source/palette.cpp
+++ b/Source/palette.cpp
@@ -24,7 +24,6 @@ void palette_init()
 {
 	LoadGamma();
 	memcpy(system_palette, orig_palette, sizeof(orig_palette));
-	LoadSysPal();
 	CreatePalette();
 }
 
@@ -48,29 +47,6 @@ void LoadGamma()
 	color_cycling_enabled = value;
 }
 
-void LoadSysPal()
-{
-	HDC hDC;
-	int i, iStartIndex;
-
-	for (i = 0; i < 256; i++)
-		system_palette[i].peFlags = PC_NOCOLLAPSE | PC_RESERVED;
-
-	if (!fullscreen) {
-		gdwPalEntries = GetDeviceCaps(hDC, NUMRESERVED) / 2;
-		GetSystemPaletteEntries(hDC, 0, gdwPalEntries, system_palette);
-		for (i = 0; i < gdwPalEntries; i++)
-			system_palette[i].peFlags = 0;
-
-		iStartIndex = 256 - gdwPalEntries;
-		GetSystemPaletteEntries(hDC, iStartIndex, gdwPalEntries, &system_palette[iStartIndex]);
-		if (iStartIndex < 256) {
-			for (i = iStartIndex; i < 256; i++)
-				system_palette[i].peFlags = 0;
-		}
-	}
-}
-
 void LoadPalette(char *pszFileName)
 {
 	int i;
diff --git a/SourceS/miniwin/com_macro.h b/SourceS/miniwin/com_macro.h
index 3707a23c4..df358d4dd 100644
--- a/SourceS/miniwin/com_macro.h
+++ b/SourceS/miniwin/com_macro.h
@@ -8,8 +8,5 @@
 
 #define DDBLTFAST_WAIT 0x00000010
 
-#define PC_RESERVED 0x01
-#define PC_NOCOLLAPSE 0x04
-
 #define ERROR_SUCCESS DVL_ERROR_SUCCESS
 #define DS_OK DVL_DS_OK
diff --git a/SourceS/miniwin/misc.h b/SourceS/miniwin/misc.h
index 0d9289e91..90bb22d9c 100644
--- a/SourceS/miniwin/misc.h
+++ b/SourceS/miniwin/misc.h
@@ -191,8 +191,6 @@ BOOL WINAPI ResetEvent(HANDLE hEvent);
 int WINAPI WaitForSingleObject(HANDLE hHandle, DWORD dwMilliseconds);
 
 WINBOOL WINAPI SetCursorPos(int X, int Y);
-HWND WINAPI SetCapture(HWND hWnd);
-WINBOOL WINAPI ReleaseCapture();
 
 SHORT WINAPI GetAsyncKeyState(int vKey);
 
@@ -216,9 +214,6 @@ void WINAPI Sleep(DWORD dwMilliseconds);
 
 WINBOOL WINAPI TextOutA(HDC hdc, int x, int y, LPCSTR lpString, int c);
 
-int WINAPI GetDeviceCaps(HDC hdc, int index);
-UINT WINAPI GetSystemPaletteEntries(HDC hdc, UINT iStart, UINT cEntries, LPPALETTEENTRY pPalEntries);
-
 int WINAPIV wsprintfA(LPSTR, LPCSTR, ...);
 int WINAPIV wvsprintfA(LPSTR dest, LPCSTR format, va_list arglist);
 int __cdecl _strcmpi(const char *_Str1, const char *_Str2);
diff --git a/SourceX/DiabloUI/diabloui.cpp b/SourceX/DiabloUI/diabloui.cpp
index 31c57ddcb..9a8532df2 100644
--- a/SourceX/DiabloUI/diabloui.cpp
+++ b/SourceX/DiabloUI/diabloui.cpp
@@ -54,7 +54,6 @@ struct {
 
 void UiDestroy()
 {
-	DUMMY();
 	ArtHero.Unload();
 	UnloadTtfFont();
 }
@@ -369,7 +368,6 @@ char connect_plrinfostr[128];
 char connect_categorystr[128];
 void UiSetupPlayerInfo(char *infostr, _uiheroinfo *pInfo, DWORD type)
 {
-	DUMMY();
 	SStrCopy(connect_plrinfostr, infostr, 128);
 	char format[32] = "";
 	strncpy(format, (char *)&type, 4);
diff --git a/SourceX/miniwin/misc.cpp b/SourceX/miniwin/misc.cpp
index 36471cf42..95541eae0 100644
--- a/SourceX/miniwin/misc.cpp
+++ b/SourceX/miniwin/misc.cpp
@@ -129,18 +129,6 @@ WINBOOL DeleteFileA(LPCSTR lpFileName)
 	return true;
 }
 
-HWND SetCapture(HWND hWnd)
-{
-	DUMMY_ONCE();
-	return hWnd;
-}
-
-WINBOOL ReleaseCapture()
-{
-	DUMMY_ONCE();
-	return true;
-}
-
 void FakeWMDestroy()
 {
 	init_cleanup();
@@ -224,24 +212,6 @@ bool SpawnWindow(LPCSTR lpWindowName, int nWidth, int nHeight)
 	return window != NULL;
 }
 
-int GetDeviceCaps(HDC hdc, int index)
-{
-	SDL_DisplayMode current;
-
-	if (SDL_GetCurrentDisplayMode(0, &current) <= -1) {
-		SDL_Log(SDL_GetError());
-		return 0;
-	}
-
-	return 0;
-}
-
-UINT GetSystemPaletteEntries(HDC hdc, UINT iStart, UINT cEntries, LPPALETTEENTRY pPalEntries)
-{
-	DUMMY();
-	return 0;
-}
-
 BOOL GetVersionExA(LPOSVERSIONINFOA lpVersionInformation)
 {
 	lpVersionInformation->dwMajorVersion = 5;
diff --git a/SourceX/storm/storm.cpp b/SourceX/storm/storm.cpp
index 981674a79..51ae016e2 100644
--- a/SourceX/storm/storm.cpp
+++ b/SourceX/storm/storm.cpp
@@ -300,12 +300,6 @@ BOOL SBmpLoadImage(const char *pszFileName, PALETTEENTRY *pPalette, BYTE *pBuffe
 	return true;
 }
 
-HWND SDrawGetFrameWindow(HWND *sdraw_framewindow)
-{
-	DUMMY();
-	return NULL;
-}
-
 void *SMemAlloc(unsigned int amount, char *logfilename, int logline, int defaultValue)
 {
 	// fprintf(stderr, "%s: %d (%s:%d)\n", __FUNCTION__, amount, logfilename, logline);