diff --git a/include/patchapi.h b/include/patchapi.h
index 5adaf0a90dd..1ccdf9dec70 100644
--- a/include/patchapi.h
+++ b/include/patchapi.h
@@ -1,5 +1,6 @@
 /*
  * Copyright 2011 Hans Leidekker for CodeWeavers
+ * Copyright 2019 Conor McCarthy
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -23,11 +24,33 @@
 extern "C" {
 #endif
 
+#define PATCH_OPTION_USE_LZX_A        0x00000001
+#define PATCH_OPTION_USE_LZX_B        0x00000002
+#define PATCH_OPTION_USE_LZX_LARGE    0x00000004 /* raise maximum window from 8 -> 32 Mb */
+
+#define PATCH_OPTION_NO_BINDFIX        0x00010000
+#define PATCH_OPTION_NO_LOCKFIX        0x00020000
+#define PATCH_OPTION_NO_REBASE         0x00040000
+#define PATCH_OPTION_FAIL_IF_SAME_FILE 0x00080000
+#define PATCH_OPTION_FAIL_IF_BIGGER    0x00100000
+#define PATCH_OPTION_NO_CHECKSUM       0x00200000
+#define PATCH_OPTION_NO_RESTIMEFIX     0x00400000
+#define PATCH_OPTION_NO_TIMESTAMP      0x00800000
+#define PATCH_OPTION_INTERLEAVE_FILES  0x40000000
+#define PATCH_OPTION_RESERVED1         0x80000000
+
 #define APPLY_OPTION_FAIL_IF_EXACT  0x00000001
 #define APPLY_OPTION_FAIL_IF_CLOSE  0x00000002
 #define APPLY_OPTION_TEST_ONLY      0x00000004
 #define APPLY_OPTION_VALID_FLAGS    0x00000007
 
+#define ERROR_PATCH_DECODE_FAILURE 0xC00E4101
+#define ERROR_PATCH_CORRUPT        0xC00E4102
+#define ERROR_PATCH_NEWER_FORMAT   0xC00E4103
+#define ERROR_PATCH_WRONG_FILE     0xC00E4104
+#define ERROR_PATCH_NOT_NECESSARY  0xC00E4105
+#define ERROR_PATCH_NOT_AVAILABLE  0xC00E4106
+
 typedef struct _PATCH_IGNORE_RANGE
 {
     ULONG OffsetInOldFile;
@@ -41,16 +64,66 @@ typedef struct _PATCH_RETAIN_RANGE
     ULONG OffsetInNewFile;
 } PATCH_RETAIN_RANGE, *PPATCH_RETAIN_RANGE;
 
+typedef struct _PATCH_INTERLEAVE_MAP {
+    ULONG CountRanges;
+    struct {
+        ULONG OldOffset;
+        ULONG OldLength;
+        ULONG NewLength;
+    } Range[1];
+} PATCH_INTERLEAVE_MAP, *PPATCH_INTERLEAVE_MAP;
+
+typedef BOOL(CALLBACK PATCH_SYMLOAD_CALLBACK)(ULONG, LPCSTR, ULONG, ULONG, ULONG, ULONG, ULONG, PVOID);
+
+typedef PATCH_SYMLOAD_CALLBACK *PPATCH_SYMLOAD_CALLBACK;
+
+typedef struct _PATCH_OPTION_DATA {
+    ULONG SizeOfThisStruct;
+    ULONG SymbolOptionFlags;
+    LPCSTR NewFileSymbolPath;
+    LPCSTR *OldFileSymbolPathArray;
+    ULONG ExtendedOptionFlags;
+    PPATCH_SYMLOAD_CALLBACK SymLoadCallback;
+    PVOID SymLoadContext;
+    PPATCH_INTERLEAVE_MAP* InterleaveMapArray;
+    ULONG MaxLzxWindowSize;
+} PATCH_OPTION_DATA, *PPATCH_OPTION_DATA;
+
+typedef BOOL (CALLBACK PATCH_PROGRESS_CALLBACK)(PVOID, ULONG, ULONG);
+
+typedef PATCH_PROGRESS_CALLBACK *PPATCH_PROGRESS_CALLBACK;
+
 BOOL WINAPI ApplyPatchToFileA(LPCSTR,LPCSTR,LPCSTR,ULONG);
 BOOL WINAPI ApplyPatchToFileW(LPCWSTR,LPCWSTR,LPCWSTR,ULONG);
 #define     ApplyPatchToFile WINELIB_NAME_AW(ApplyPatchToFile)
 
+BOOL WINAPI ApplyPatchToFileByHandles(HANDLE, HANDLE, HANDLE, ULONG);
+BOOL WINAPI ApplyPatchToFileExA(LPCSTR, LPCSTR, LPCSTR, ULONG, PPATCH_PROGRESS_CALLBACK, PVOID);
+BOOL WINAPI ApplyPatchToFileExW(LPCWSTR, LPCWSTR, LPCWSTR, ULONG, PPATCH_PROGRESS_CALLBACK, PVOID);
+#define     ApplyPatchToFileEx WINELIB_NAME_AW(ApplyPatchToFileEx)
+BOOL WINAPI ApplyPatchToFileByHandlesEx(HANDLE, HANDLE, HANDLE, ULONG, PPATCH_PROGRESS_CALLBACK, PVOID);
+BOOL WINAPI ApplyPatchToFileByBuffers(PBYTE, ULONG, PBYTE, ULONG, PBYTE*, ULONG, ULONG*, FILETIME*, ULONG,
+                                      PPATCH_PROGRESS_CALLBACK, PVOID);
+
+BOOL WINAPI TestApplyPatchToFileA(LPCSTR, LPCSTR, ULONG);
+BOOL WINAPI TestApplyPatchToFileW(LPCWSTR, LPCWSTR, ULONG);
+#define     TestApplyPatchToFile WINELIB_NAME_AW(TestApplyPatchToFile)
+BOOL WINAPI TestApplyPatchToFileByHandles(HANDLE, HANDLE, ULONG);
+BOOL WINAPI TestApplyPatchToFileByBuffers(PBYTE, ULONG, PBYTE, ULONG, ULONG*, ULONG);
+
 BOOL WINAPI GetFilePatchSignatureA(LPCSTR, ULONG, PVOID, ULONG, PPATCH_IGNORE_RANGE, ULONG,
                                    PPATCH_RETAIN_RANGE, ULONG, LPSTR);
 BOOL WINAPI GetFilePatchSignatureW(LPCWSTR, ULONG, PVOID, ULONG, PPATCH_IGNORE_RANGE, ULONG,
                                    PPATCH_RETAIN_RANGE, ULONG, LPWSTR);
 #define     GetFilePatchSignature WINELIB_NAME_AW(GetFilePatchSignature)
 
+BOOL WINAPI GetFilePatchSignatureByHandle(HANDLE, ULONG, PVOID, ULONG, PPATCH_IGNORE_RANGE,
+                                          ULONG, PPATCH_RETAIN_RANGE, ULONG, LPSTR);
+BOOL WINAPI GetFilePatchSignatureByBuffer(PBYTE, ULONG, ULONG, PVOID, ULONG, PPATCH_IGNORE_RANGE, ULONG,
+                                          PPATCH_RETAIN_RANGE, ULONG, LPSTR);
+INT WINAPI NormalizeFileForPatchSignature(PVOID, ULONG, ULONG, PATCH_OPTION_DATA*, ULONG,
+                                          ULONG, ULONG, PPATCH_IGNORE_RANGE, ULONG, PPATCH_RETAIN_RANGE);
+
 #ifdef __cplusplus
 }
 #endif