1 files changed, 23 insertions, 0 deletions
diff --git a/alf/alfcompat.cpp b/alf/alfcompat.cpp
new file mode 100644
index 0000000..452b9bc
--- /dev/null
+++ b/alf/alfcompat.cpp
@@ -0,0 +1,23 @@
+#include "alfpriv.h"
+
+ALFCompatFunctions *
+ALF_CreateCompatFuncTable(void)
+{
+    ALFCompatFunctions *compatfn = (ALFCompatFunctions*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY|HEAP_GENERATE_EXCEPTIONS, sizeof(ALFCompatFunctions));
+
+#define COMPAT(dll, entrypoint, ordinal) \
+    do { \
+        FARPROC p = GetProcAddress(GetModuleHandleA(#dll), #entrypoint); \
+        if (!p && ordinal) \
+            p = GetProcAddress(GetModuleHandleA(#dll), (char*)ordinal); \
+        CopyMemory(&compatfn->entrypoint, &p, sizeof(void*)); \
+    } while (0)
+
+    COMPAT(comctl32.dll, SetWindowSubclass, 410);
+    COMPAT(comctl32.dll, DefSubclassProc, 413);
+    COMPAT(comctl32.dll, RemoveWindowSubclass, 412);
+
+#undef COMPAT
+
+    return compatfn;
+}