Started a new hresultwrap in Go. I'll run it locally.

windows/tools/funclist.textpb

@@ -0,0 +1,18 @@
+# 8 august 2018
+
+func: {
+name: "RegisterClassW"
+arg: "_In_ CONST WNDCLASSW *lpWndClass"
+ret: "ATOM"
+failval: "0"
+save: true
+}
+
+func: {
+name: "UnregisterClassW"
+arg: "_In_ LPCWSTR lpClassName"
+arg: "_In_opt_ HINSTANCE hInstance"
+ret: "BOOL"
+failval: "0"
+cleanup: true
+}

windows/tools/hresultwrap.go

@@ -0,0 +1,30 @@
+// 8 august 2018
+// usage: hresultwrap funclist template out
+package main
+
+import (
+	"fmt"
+	"os"
+	"io/ioutil"
+
+	"github.com/golang/protobuf/proto"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintf(os.Stderr, "usage: %s funclist\n", os.Args[0])
+		os.Exit(1)
+	}
+	b, err := ioutil.ReadFile(os.Args[1])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error reading %s: %v\n", os.Args[1], err)
+		os.Exit(1)
+	}
+	var f File
+	err = proto.UnmarshalText(string(b), &f)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error parsing %s: %v\n", os.Args[1], err)
+		os.Exit(1)
+	}
+	fmt.Println(f)
+}

windows/tools/hresultwrap.proto

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+// 8 august 2018
+syntax = "proto3";
+
+option go_package = "main";
+
+message File {
+	repeated Function func = 1;
+}
+
+message Function {
+	string name = 1;
+	string calling_convention = 2;		// defaults to WINAPI
+	repeated string arg = 3;
+	string ret = 4;
+	string failval = 5;
+	bool save = 6;
+	bool cleanup = 7;
+}

windows/tools/mk.sh

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+rm -f hresultwrap.pb.go hresultwrap
+protoc --go_out=. hresultwrap.proto
+go build hresultwrap.go hresultwrap.pb.go