diff --git a/.drone.star b/.drone.star
index cd31666..911c1f3 100644
--- a/.drone.star
+++ b/.drone.star
@@ -168,6 +168,7 @@ def generate(ctx, lang):
 					'rm -Rf %s/*' % config["languages"][lang]["src"],
 					'/usr/local/bin/docker-entrypoint.sh generate --enable-post-process-file -i api/openapi-spec/v1.0.yaml $${TEMPLATE_ARG} --additional-properties=packageName=libregraph --git-user-id=owncloud --git-repo-id=%s -g %s -o %s %s' % (config["languages"][lang]["repo-slug"], lang, config["languages"][lang]["src"], config["languages"][lang].get('generator-args', '') ),
 					'cp LICENSE %s/LICENSE' % config["languages"][lang]["src"],
+					'test -d "templates/{0}-files" && cp -rT "templates/{0}-files" "{1}" || true'.format(lang, config["languages"][lang]["src"]),
 				],
 			}
 			] + validate(lang) + [
@@ -229,10 +230,18 @@ def generate(ctx, lang):
 def validate(lang):
 	steps = {
 		"cpp-qt-client": [
+			{
+				"name": "validate-cpp-format",
+				"image": "xianpengshen/clang-tools:17",
+				"commands": [
+					"git clang-format -force"
+				]
+			},
 			{
 				"name": "validate-cpp",
 				"image": "owncloudci/client",
 				"commands": [
+					"git clang-format -force",
 					"mkdir build-qt",
 					"cd build-qt",
 					"cmake -GNinja -S ../%s/client" % config["languages"][lang]["src"],
diff --git a/templates/cpp-qt-client-files/.clang-format b/templates/cpp-qt-client-files/.clang-format
new file mode 100644
index 0000000..6e17f17
--- /dev/null
+++ b/templates/cpp-qt-client-files/.clang-format
@@ -0,0 +1,62 @@
+# Copyright (C) 2016 Olivier Goffart <ogoffart@woboq.com>
+#
+# You may use this file under the terms of the 3-clause BSD license.
+# See the file LICENSE from this package for details.
+
+# This is the clang-format configuration style to be used by Qt,
+# based on the rules from https://wiki.qt.io/Qt_Coding_Style and
+# https://wiki.qt.io/Coding_Conventions
+
+---
+# Webkit style was loosely based on the Qt style
+BasedOnStyle: WebKit
+
+Standard: c++17
+ColumnLimit: 160
+
+# Disable reflow of qdoc comments: indentation rules are different.
+# Translation comments are also excluded
+CommentPragmas: "^!|^:"
+
+# We want a space between the type and the star for pointer types
+PointerBindsToType: false
+
+# We want to break before the operators, but not before a '='
+BreakBeforeBinaryOperators: NonAssignment
+
+# Braces are usually attached, but not after functions or classes declaration
+BreakBeforeBraces: Custom
+BraceWrapping:
+    AfterClass: true
+    AfterControlStatement: false
+    AfterEnum: false
+    AfterFunction: true
+    AfterNamespace: false
+    AfterObjCDeclaration: false
+    AfterStruct: true
+    AfterUnion: false
+    BeforeCatch: false
+    BeforeElse: false
+    IndentBraces: false
+
+# The coding style does not specify the following, but this is what gives
+# results closest to the existing code.
+AlignAfterOpenBracket: DontAlign
+AlwaysBreakTemplateDeclarations: true
+
+# Ideally we should also allow less short function in a single line, but
+# clang-format does not handle that
+AllowShortFunctionsOnASingleLine: Inline
+
+SortIncludes: true
+
+# macros for which the opening brace stays attached
+ForEachMacros:   [ foreach, Q_FOREACH, BOOST_FOREACH, forever, Q_FOREVER, QBENCHMARK, QBENCHMARK_ONCE ]
+
+# Allow two empty lines for structuring
+MaxEmptyLinesToKeep: 2
+KeepEmptyLinesAtTheStartOfBlocks: false
+
+# Properly format c++11 initializer
+SpaceBeforeCpp11BracedList: false
+Cpp11BracedListStyle: true
\ No newline at end of file