From 94374e496bdf0e5184589a1bd8fc96ca13a550e2 Mon Sep 17 00:00:00 2001
From: rhuvendiek <rhuvendiek@schueco.com>
Date: Mon, 29 Jun 2015 13:56:15 +0200
Subject: [PATCH 1/2] Write entries to compile idl files with MIDL into
 vcxproj-files.

---
 src/actions/vstudio/vs2010_vcxproj.lua | 34 +++++++++++++++++++++++++-
 src/base/path.lua                      |  8 ++++++
 2 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/src/actions/vstudio/vs2010_vcxproj.lua b/src/actions/vstudio/vs2010_vcxproj.lua
index a1816ef8..cb7d6cd4 100644
--- a/src/actions/vstudio/vs2010_vcxproj.lua
+++ b/src/actions/vstudio/vs2010_vcxproj.lua
@@ -583,7 +583,8 @@
 		"none",
 		"resourceCompile",
 		"customBuild",
-		"customRule"
+		"customRule",
+		"midlCompile"
 	}
 
 	m.elements.files = function(prj, groups)
@@ -779,6 +780,35 @@
 		end
 	end
 
+	function m.midlCompileFiles(prj, groups)
+		local files = groups.MidlCompile or {}
+		if #files > 0  then
+			p.push('<ItemGroup>')
+			for i, file in ipairs(files) do
+				local contents = p.capture(function ()
+					p.push()
+					for cfg in project.eachconfig(prj) do
+						local condition = m.condition(cfg)
+						local filecfg = fileconfig.getconfig(file, cfg)
+						if cfg.system == premake.WINDOWS then
+							m.excludedFromBuild(cfg, filecfg)
+						end
+					end
+					p.pop()
+				end)
+
+				if #contents > 0 then
+					p.push('<Midl Include=\"%s\">', path.translate(file.relpath))
+					p.outln(contents)
+					p.pop('</Midl>')
+				else
+					p.x('<Midl Include=\"%s\" />', path.translate(file.relpath))
+				end
+			end
+			p.pop('</ItemGroup>')
+		end
+	end
+
 
 	function m.categorize(prj, file)
 		-- If any configuration for this file uses a custom build step,
@@ -803,6 +833,8 @@
 			return "ClInclude"
 		elseif path.isresourcefile(file.name) then
 			return "ResourceCompile"
+		elseif path.isidlfile(file.name) then
+			return "MidlCompile"
 		else
 			return "None"
 		end
diff --git a/src/base/path.lua b/src/base/path.lua
index 585428ab..9edad764 100644
--- a/src/base/path.lua
+++ b/src/base/path.lua
@@ -197,6 +197,14 @@
 		return path.hasextension(fname, ".rc")
 	end
 
+--
+-- Returns true if the filename represents a Windows idl file.
+--
+
+	function path.isidlfile(fname)
+		return path.hasextension(fname, ".idl")
+	end
+
 
 --
 -- Takes a path which is relative to one location and makes it relative

From 2014046021d7de75735fa267f09fd13455bba8d8 Mon Sep 17 00:00:00 2001
From: rhuvendiek <rhuvendiek@schueco.com>
Date: Wed, 1 Jul 2015 16:52:53 +0200
Subject: [PATCH 2/2] Add unit test for MIDL generator.

---
 tests/actions/vstudio/vc2010/test_files.lua | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/actions/vstudio/vc2010/test_files.lua b/tests/actions/vstudio/vc2010/test_files.lua
index 2ec49108..875eb91e 100755
--- a/tests/actions/vstudio/vc2010/test_files.lua
+++ b/tests/actions/vstudio/vc2010/test_files.lua
@@ -68,6 +68,16 @@
 		]]
 	end
 
+	function suite.midlCompile_onIDLFile()
+		files { "idl/interfaces.idl" }
+		prepare()
+		test.capture [[
+<ItemGroup>
+	<Midl Include="idl\interfaces.idl" />
+</ItemGroup>
+		]]
+	end
+
 	function suite.none_onTxtFile()
 		files { "docs/hello.txt" }
 		prepare()