diff --git a/include/uui/component.hpp b/include/uui/component.hpp
index 7bd2c39..a9ad0bb 100644
--- a/include/uui/component.hpp
+++ b/include/uui/component.hpp
@@ -22,8 +22,8 @@ protected:
 
 	uui::position_t position_x;
 	uui::position_t position_y;
-	uui::position_t size_width;
-	uui::position_t size_height;
+	uui::size_t size_width;
+	uui::size_t size_height;
 
 	bool coord_all_relative;
 
diff --git a/include/uui/opengl/component.hpp b/include/uui/opengl/component.hpp
index 24230df..441e322 100644
--- a/include/uui/opengl/component.hpp
+++ b/include/uui/opengl/component.hpp
@@ -34,13 +34,9 @@ protected:
 
 	GlComponent(
 		std::shared_ptr<GlWindow> window, std::size_t window_index, std::shared_ptr<GlContainer> parent,
-		std::size_t parent_index, const position_t x, const position_t y, const position_t width,
-		const position_t height);
-	GlComponent(
-		std::shared_ptr<GlWindow> window, std::size_t window_index, const position_t x, const position_t y,
-		const position_t width, const position_t height):
-		GlComponent(
-			window, window_index, std::static_pointer_cast<GlContainer>(window), window_index, x, y, width, height)
+		std::size_t parent_index, const ComponentParams& params);
+	GlComponent(std::shared_ptr<GlWindow> window, std::size_t window_index, const ComponentParams& params):
+		GlComponent(window, window_index, std::static_pointer_cast<GlContainer>(window), window_index, params)
 	{}
 	GlComponent(const GlComponent&) = delete;
 	GlComponent(GlComponent&&) = default;
diff --git a/include/uui/opengl/flex.hpp b/include/uui/opengl/flex.hpp
index b73fac3..e0bcdc5 100644
--- a/include/uui/opengl/flex.hpp
+++ b/include/uui/opengl/flex.hpp
@@ -18,11 +18,9 @@ class GlFlex: virtual public GlStack, virtual public Flex
 protected:
 	GlFlex(
 		std::shared_ptr<GlWindow> window, std::size_t window_index, std::shared_ptr<GlContainer> parent,
-		std::size_t parent_index, const position_t x, const position_t y, const Direction direction);
-	GlFlex(
-		std::shared_ptr<GlWindow> window, std::size_t window_index, const position_t x, const position_t y,
-		const Direction direction):
-		GlFlex(window, window_index, window, window_index, x, y, direction)
+		std::size_t parent_index, const StackParams& params);
+	GlFlex(std::shared_ptr<GlWindow> window, std::size_t window_index, const StackParams& params):
+		GlFlex(window, window_index, window, window_index, params)
 	{}
 
 	std::tuple<int, int> get_child_position(const std::size_t child_index) const override;
diff --git a/include/uui/opengl/label.hpp b/include/uui/opengl/label.hpp
index bbcb296..4570717 100644
--- a/include/uui/opengl/label.hpp
+++ b/include/uui/opengl/label.hpp
@@ -26,12 +26,9 @@ protected:
 
 	GlLabel(
 		std::shared_ptr<GlWindow> window, std::size_t window_index, std::shared_ptr<GlContainer> parent,
-		std::size_t parent_index, const position_t x, const position_t y, const std::string& text,
-		const std::tuple<float, float, float, float>& text_color);
-	GlLabel(
-		std::shared_ptr<GlWindow> window, std::size_t window_index, const position_t x, const position_t y,
-		const std::string& text, const std::tuple<float, float, float, float>& text_color):
-		GlLabel(window, window_index, window, window_index, x, y, text, text_color)
+		std::size_t parent_index, const LabelParams& params);
+	GlLabel(std::shared_ptr<GlWindow> window, std::size_t window_index, const LabelParams& params):
+		GlLabel(window, window_index, window, window_index, params)
 	{}
 
 	void render() final;
diff --git a/include/uui/opengl/stack.hpp b/include/uui/opengl/stack.hpp
index 97d58de..b625314 100644
--- a/include/uui/opengl/stack.hpp
+++ b/include/uui/opengl/stack.hpp
@@ -15,19 +15,15 @@ class GlStack: virtual public GlComponent, virtual public GlContainer, virtual p
 	friend class GlWindow;
 
 public:
-	void create_component(const position_t width, const position_t height, InitFunction<Component> init) override;
-	void create_label(
-		const std::string& text, const std::tuple<float, float, float, float>& text_color,
-		InitFunction<Label> init) override;
+	void create_component(const StackComponentParams& params, InitFunction<Component> init) override;
+	void create_label(const StackLabelParams& params, InitFunction<Label> init) override;
 
 protected:
 	GlStack(
 		std::shared_ptr<GlWindow> window, std::size_t window_index, std::shared_ptr<GlContainer> parent,
-		std::size_t parent_index, const position_t x, const position_t y, const Direction direction);
-	GlStack(
-		std::shared_ptr<GlWindow> window, std::size_t window_index, const position_t x, const position_t y,
-		const Direction direction):
-		GlStack(window, window_index, window, window_index, x, y, direction)
+		std::size_t parent_index, const StackParams& params);
+	GlStack(std::shared_ptr<GlWindow> window, std::size_t window_index, const StackParams& params):
+		GlStack(window, window_index, window, window_index, params)
 	{}
 
 	std::tuple<int, int> get_child_position(const std::size_t child_index) const override;
diff --git a/include/uui/opengl/window.hpp b/include/uui/opengl/window.hpp
index 5c064e0..67543da 100644
--- a/include/uui/opengl/window.hpp
+++ b/include/uui/opengl/window.hpp
@@ -26,15 +26,10 @@ public:
 	GlWindow(GlWindow&&) = delete;
 	~GlWindow();
 
-	void create_component(
-		const position_t x, const position_t y, const position_t width, const position_t height,
-		InitFunction<Component> init) final;
-	void create_label(
-		const position_t x, const position_t y, const std::string& text,
-		const std::tuple<float, float, float, float>& text_color, InitFunction<Label> init) final;
-	void create_flex(const position_t x, const position_t y, const Direction direction, InitFunction<Flex> init) final;
-	void create_stack(
-		const position_t x, const position_t y, const Direction direction, InitFunction<Stack> init) final;
+	void create_component(const ComponentParams& params, InitFunction<Component> init) final;
+	void create_label(const LabelParams& params, InitFunction<Label> init) final;
+	void create_flex(const StackParams& params, InitFunction<Flex> init) final;
+	void create_stack(const StackParams& params, InitFunction<Stack> init) final;
 
 protected:
 	void render() final;
diff --git a/include/uui/stack.hpp b/include/uui/stack.hpp
index bc3d015..df89240 100644
--- a/include/uui/stack.hpp
+++ b/include/uui/stack.hpp
@@ -11,10 +11,8 @@ namespace uui
 class Stack: virtual public Component
 {
 public:
-	virtual void create_component(const position_t width, const position_t height, InitFunction<Component> init) = 0;
-	virtual void create_label(
-		const std::string& text, const std::tuple<float, float, float, float>& text_color,
-		InitFunction<Label> init) = 0;
+	virtual void create_component(const StackComponentParams& params, InitFunction<Component> init) = 0;
+	virtual void create_label(const StackLabelParams& params, InitFunction<Label> init) = 0;
 
 protected:
 	Direction direction;
diff --git a/include/uui/types.hpp b/include/uui/types.hpp
index 7e8ab70..fae7b2f 100644
--- a/include/uui/types.hpp
+++ b/include/uui/types.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <functional>
+#include <tuple>
 #include <variant>
 
 namespace uui
@@ -8,9 +9,43 @@ namespace uui
 template<typename T> using InitFunction = const std::function<void(T&)>&;
 typedef std::variant<int, float> position_t;
 typedef std::variant<int, float> size_t;
+typedef std::tuple<float, float, float, float> color_t;
+
 enum Direction
 {
 	HORIZONTAL,
 	VERTICAL
 };
+
+struct ComponentParams
+{
+	uui::position_t x;
+	uui::position_t y;
+	uui::size_t width;
+	uui::size_t height;
+};
+struct LabelParams
+{
+	uui::position_t x;
+	uui::position_t y;
+	const std::string& text;
+	const uui::color_t& text_color;
+};
+struct StackParams
+{
+	const uui::position_t x;
+	const uui::position_t y;
+	const uui::Direction direction;
+};
+struct StackComponentParams
+{
+	uui::size_t width;
+	uui::size_t height;
+};
+struct StackLabelParams
+{
+	const std::string& text;
+	const uui::color_t& text_color;
+};
+
 } // namespace uui
diff --git a/include/uui/window.hpp b/include/uui/window.hpp
index ca58191..936b273 100644
--- a/include/uui/window.hpp
+++ b/include/uui/window.hpp
@@ -2,7 +2,6 @@
 
 #include <memory>
 #include <string>
-#include <vector>
 
 #include "uui/application.hpp"
 #include "uui/container.hpp"
@@ -24,16 +23,10 @@ public:
 
 	std::shared_ptr<FontManager> font_manager;
 
-	virtual void create_component(
-		const position_t x, const position_t y, const position_t width, const position_t height,
-		InitFunction<Component> init) = 0;
-	virtual void create_label(
-		const position_t x, const position_t y, const std::string& text,
-		const std::tuple<float, float, float, float>& text_color, InitFunction<Label> init) = 0;
-	virtual void create_flex(
-		const position_t x, const position_t y, const Direction direction, InitFunction<Flex> init) = 0;
-	virtual void create_stack(
-		const position_t x, const position_t y, const Direction direction, InitFunction<Stack> init) = 0;
+	virtual void create_component(const ComponentParams& params, InitFunction<Component> init) = 0;
+	virtual void create_label(const LabelParams& params, InitFunction<Label> init) = 0;
+	virtual void create_flex(const StackParams& params, InitFunction<Flex> init) = 0;
+	virtual void create_stack(const StackParams& params, InitFunction<Stack> init) = 0;
 
 	int width() { return _width; };
 	int height() { return _height; };
diff --git a/make.py b/make.py
index d15832c..cd796e9 100644
--- a/make.py
+++ b/make.py
@@ -18,7 +18,7 @@ class Config:
     OBJECT_DIR = Path('obj')
     SOURCE_DIR = Path('src')
 
-    COMMON_FLAGS = '-std=c++17 -fno-semantic-interposition'
+    COMMON_FLAGS = '-std=c++20 -fno-semantic-interposition'
     COMMON_DEBUG_FLAGS = '-g -Og -DDEBUG'
     COMMON_RELEASE_FLAGS = '-O2 -flto=auto'
     COMPILE_FLAGS = f'-Wall -Wextra -Wpedantic -Wconversion -I{INCLUDE_DIR} `pkg-config --cflags glfw3 vulkan gl x11 freetype2`'
diff --git a/src/test/benchmark_text.cpp b/src/test/benchmark_text.cpp
index 693bc82..9acca2f 100644
--- a/src/test/benchmark_text.cpp
+++ b/src/test/benchmark_text.cpp
@@ -9,10 +9,9 @@ int main()
 	try
 	{
 		auto app = uui::create_application(uui::Application::OPENGL);
-		//  auto app2 = uui::create_application(uui::Application::OPENGL); // exception : application already created
 		app->create_window(800, 600, "OpenGl!", [](uui::Window& window) {
 			for(int i = 0; i < 100; i += 1)
-				window.create_label(4 * i, 4 * i, "Hello World!", {1.0f, 1.0f, 1.0f, 0.5f}, {});
+				window.create_label({4 * i, 4 * i, "Hello World!", {1.0f, 1.0f, 1.0f, 0.5f}}, nullptr);
 		});
 		app->run();
 	}
diff --git a/src/test/example_gl.cpp b/src/test/example_gl.cpp
index 59706f8..cc50eec 100644
--- a/src/test/example_gl.cpp
+++ b/src/test/example_gl.cpp
@@ -13,55 +13,64 @@ int main()
 			auto app = uui::create_application(uui::Application::OPENGL);
 			// auto app2 = uui::create_application(uui::Application::OPENGL); // exception : application already created
 			app->create_window(800, 600, "OpenGl!", [](uui::Window& window) {
-				window.create_component(0, 100, 0.5f, 50, [](uui::Component& component) {
+				window.create_component({.x = 0, .y = 100, .width = 0.5f, .height = 50}, [](uui::Component& component) {
 					component.set_background_color(0.8f, 0.1f, 0.5f);
 				});
 
-				window.create_component(0.25f, 50, 0.4f, 150, [](uui::Component& component) {
-					component.set_background_color(0.3f, 0.8f, 0.4f, 0.5f);
-				});
+				window.create_component(
+					{.x = 0.25f, .y = 50, .width = 0.4f, .height = 150},
+					[](uui::Component& component) { component.set_background_color(0.3f, 0.8f, 0.4f, 0.5f); });
 
-				window.create_label(50, 50, "Hello World!", {0.5f, 1.0f, 0.5f, 1.0f}, [](uui::Label& label) {
-					label.set_background_color(0.1f, 0.2f, 0.5f, 0.8f);
-				});
+				window.create_label(
+					{.x = 50, .y = 50, .text = "Hello World!", .text_color = {0.5f, 1.0f, 0.5f, 1.0f}},
+					[](uui::Label& label) { label.set_background_color(0.1f, 0.2f, 0.5f, 0.8f); });
 
-				window.create_label(0.5f, 0.5f, "Hello World!", {1.0f, 1.0f, 1.0f, 0.5f}, [](uui::Label& label) {
+				window.create_label({0.5f, 0.5f, "Hello World!", {1.0f, 1.0f, 1.0f, 0.5f}}, [](uui::Label& label) {
 					label.set_background_color(0.5f, 0.5f, 0.1f);
 				});
-				window.create_label(0.75f, 0.75f, "Hello World!", {1.0f, 1.0f, 1.0f, 0.1f}, {});
+				window.create_label({0.75f, 0.75f, "Hello World!", {1.0f, 1.0f, 1.0f, 0.1f}}, {});
 
-				window.create_flex(200, 0.6f, uui::Direction::HORIZONTAL, [](uui::Flex& flex) {
-					flex.create_component(
-						100, 50, [](uui::Component& component) { component.set_background_color(0.2f, 0.75f, 0.25f); });
-					flex.create_label("test", {0.8f, 0.2f, 0.2f, 1.0f}, {});
-					flex.create_component(
-						100, 20, [](uui::Component& component) { component.set_background_color(0.2f, 0.25f, 0.75f); });
+				window.create_flex({200, 0.6f, uui::Direction::HORIZONTAL}, [](uui::Flex& flex) {
+					flex.create_component({.width = 100, .height = 50}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.75f, 0.25f);
+					});
+					flex.create_label({.text = "test", .text_color = {0.8f, 0.2f, 0.2f, 1.0f}}, {});
+					flex.create_component({100, 20}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.25f, 0.75f);
+					});
 				});
 
-				window.create_flex(50, 400, uui::Direction::VERTICAL, [](uui::Flex& flex) {
-					flex.create_component(
-						50, 100, [](uui::Component& component) { component.set_background_color(0.2f, 0.75f, 0.25f); });
-					flex.create_label("test", {0.8f, 0.2f, 0.2f, 1.0f}, {});
-					flex.create_component(
-						100, 20, [](uui::Component& component) { component.set_background_color(0.2f, 0.25f, 0.75f); });
+				window.create_flex({50, 400, uui::Direction::VERTICAL}, [](uui::Flex& flex) {
+					flex.create_component({50, 100}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.75f, 0.25f);
+					});
+					flex.create_label({"test", {0.8f, 0.2f, 0.2f, 1.0f}}, {});
+					flex.create_component({100, 20}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.25f, 0.75f);
+					});
 				});
 			});
 
 			app->create_window(800, 600, "OpenGl 2", [](uui::Window& window) {
-				window.create_stack(200, 0.6f, uui::Direction::HORIZONTAL, [](uui::Stack& stack) {
-					stack.create_component(
-						100, 50, [](uui::Component& component) { component.set_background_color(0.2f, 0.75f, 0.25f); });
-					stack.create_label("test", {0.8f, 0.2f, 0.2f, 1.0f}, {});
-					stack.create_component(
-						100, 20, [](uui::Component& component) { component.set_background_color(0.2f, 0.25f, 0.75f); });
-				});
+				window.create_stack(
+					{.x = 200, .y = 0.6f, .direction = uui::Direction::HORIZONTAL}, [](uui::Stack& stack) {
+						stack.create_component({.width = 100, .height = 50}, [](uui::Component& component) {
+							component.set_background_color(0.2f, 0.75f, 0.25f);
+						});
+						stack.create_label({.text = "test", .text_color = {0.8f, 0.2f, 0.2f, 1.0f}}, {});
+						stack.create_component({.width = 100, .height = 20}, [](uui::Component& component) {
+							component.set_background_color(0.2f, 0.25f, 0.75f);
+						});
+					});
 
-				window.create_stack(50, 400, uui::Direction::VERTICAL, [](uui::Stack& stack) {
-					stack.create_component(
-						100, 50, [](uui::Component& component) { component.set_background_color(0.2f, 0.75f, 0.25f); });
-					stack.create_label("test", {0.8f, 0.2f, 0.2f, 1.0f}, {});
-					stack.create_component(
-						100, 20, [](uui::Component& component) { component.set_background_color(0.2f, 0.25f, 0.75f); });
+				window.create_stack({.x = 50, .y = 400, .direction = uui::Direction::VERTICAL}, [](uui::Stack& stack) {
+					stack.create_component({.width = 100, .height = 50}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.75f, 0.25f);
+					});
+					stack.create_label({.text = "test", .text_color = {0.8f, 0.2f, 0.2f, 1.0f}}, {});
+					stack.create_component({.width = 100, .height = 20}, [](uui::Component& component) {
+						component.set_background_color(0.2f, 0.25f, 0.75f);
+					});
 				});
 			});
 
@@ -71,19 +80,19 @@ int main()
 		{
 			auto app = uui::create_application(uui::Application::OPENGL);
 			app->create_window(800, 600, "OpenGl!", [](uui::Window& window) {
-				window.create_component(0.25f, 0.25f, 0.5f, 0.5f, [](uui::Component& component) {
+				window.create_component({0.25f, 0.25f, 0.5f, 0.5f}, [](uui::Component& component) {
 					component.set_background_color(0.8f, 0.1f, 0.5f);
 				});
-				window.create_component(0.75f, 0.75f, 0.25f, 0.25f, [](uui::Component& component) {
+				window.create_component({0.75f, 0.75f, 0.25f, 0.25f}, [](uui::Component& component) {
 					component.set_background_color(0.2f, 0.1f, 0.5f);
 				});
 			});
 
 			app->create_window(600, 600, "OpenGL 2!", [](uui::Window& window) {
-				window.create_component(0, 0.5f, 100, 0.5f, [](uui::Component& component) {
+				window.create_component({0, 0.5f, 100, 0.5f}, [](uui::Component& component) {
 					component.set_background_color(0.2f, 0.5f, 0.3f);
 				});
-				window.create_label(50, 50, "Hello World!", {0.5f, 1.0f, 0.5f, 1.0f}, [](uui::Label& label) {
+				window.create_label({50, 50, "Hello World!", {0.5f, 1.0f, 0.5f, 1.0f}}, [](uui::Label& label) {
 					label.set_background_color(0.1f, 0.2f, 0.5f);
 				});
 			});
diff --git a/src/test/sample.cpp b/src/test/sample.cpp
index 5f8b2d6..b0d1202 100644
--- a/src/test/sample.cpp
+++ b/src/test/sample.cpp
@@ -4,23 +4,12 @@ int main()
 {
 	auto app = uui::create_application(uui::Application::OPENGL);
 	app->create_window(800, 600, "UUI sample", [](uui::Window& window) {
-		window.create_component(
-			0, 0, 200, 100, [](uui::Component& component) { component.set_background_color(1.0f, 0.f, 0.f, 0.5f); });
-		window.create_label(0.5f, 0.5f, "Hello world!", {0.8f, 0.8f, 0.8f, 1.0f}, nullptr);
+		window.create_component({.x = 0, .y = 0, .width = 200, .height = 100}, [](uui::Component& component) {
+			component.set_background_color(1.0f, 0.f, 0.f, 0.5f);
+		});
+		window.create_label(
+			{.x = 0.5f, .y = 0.5f, .text = "Hello world!", .text_color = {0.8f, 0.8f, 0.8f, 1.0f}}, nullptr);
 	});
 	app->run();
-	// app->run();
-
-	// app = uui::create_application(uui::Application::OPENGL);
-	// app->create_window(800, 600, "test", [](uui::Window& window) {
-	// 	window.create_flex(10, 10, uui::HORIZONTAL, [](uui::Flex& flex) {
-	// 		flex.create_label("Hello!", {0.5f, 0.f, 0.f, 1.0f}, [](uui::Label& label) {
-	// 			label.set_background_color(0.2f, 0.2f, 0.6f, 1.0f);
-	// 		});
-	// 		flex.create_label("World!", {1.0, 1.0, 1.0, 1.0}, {});
-	// 	});
-	// });
-	// app->run();
-
 	return 0;
 }
diff --git a/src/uui/opengl/component.cpp b/src/uui/opengl/component.cpp
index d4c72cf..3857260 100644
--- a/src/uui/opengl/component.cpp
+++ b/src/uui/opengl/component.cpp
@@ -8,7 +8,7 @@
 
 uui::GlComponent::GlComponent(
 	std::shared_ptr<uui::GlWindow> window, std::size_t window_index, std::shared_ptr<uui::GlContainer> parent,
-	std::size_t parent_index, const position_t x, const position_t y, const position_t width, const position_t height)
+	std::size_t parent_index, const ComponentParams& params)
 {
 	if constexpr(uui::Application::debug_mode)
 		std::cout << "Creating a GlComponent " << parent_index << std::endl;
@@ -23,10 +23,10 @@ uui::GlComponent::GlComponent(
 
 	initialized = false;
 
-	position_x = x;
-	position_y = y;
-	size_width = width;
-	size_height = height;
+	position_x = params.x;
+	position_y = params.y;
+	size_width = params.width;
+	size_height = params.height;
 
 	coord_all_relative = true;
 	auto parse_coords = [&](position_t& value) {
diff --git a/src/uui/opengl/flex.cpp b/src/uui/opengl/flex.cpp
index 73c9d55..bbfd4f8 100644
--- a/src/uui/opengl/flex.cpp
+++ b/src/uui/opengl/flex.cpp
@@ -6,9 +6,9 @@
 
 uui::GlFlex::GlFlex(
 	std::shared_ptr<uui::GlWindow> window, std::size_t window_index, std::shared_ptr<uui::GlContainer> parent,
-	std::size_t parent_index, const position_t x, const position_t y, const Direction direction):
-	GlComponent(window, window_index, parent, parent_index, x, y, 0.0f, 0.0f),
-	GlStack(window, window_index, parent, parent_index, x, y, direction)
+	std::size_t parent_index, const StackParams& params):
+	GlComponent(window, window_index, parent, parent_index, {params.x, params.y, 0.0f, 0.0f}),
+	GlStack(window, window_index, parent, parent_index, params)
 {
 	if constexpr(uui::GlApplication::debug_mode)
 		std::cout << "Creating a GlFlex " << parent_index << std::endl;
diff --git a/src/uui/opengl/font_manager.cpp b/src/uui/opengl/font_manager.cpp
index 59c7ebf..974ff23 100644
--- a/src/uui/opengl/font_manager.cpp
+++ b/src/uui/opengl/font_manager.cpp
@@ -6,10 +6,10 @@
 #include <algorithm>
 #include <iostream>
 
-#include "uui/types.hpp"
 #include "uui/opengl/application.hpp"
 #include "uui/opengl/gl_utils.hpp"
 #include "uui/shader.hpp"
+#include "uui/types.hpp"
 
 uui::GlFontManager::GlFontManager()
 {
diff --git a/src/uui/opengl/label.cpp b/src/uui/opengl/label.cpp
index 981d0a9..7003b7d 100644
--- a/src/uui/opengl/label.cpp
+++ b/src/uui/opengl/label.cpp
@@ -7,10 +7,9 @@
 
 uui::GlLabel::GlLabel(
 	std::shared_ptr<uui::GlWindow> window, std::size_t window_index, std::shared_ptr<uui::GlContainer> parent,
-	std::size_t parent_index, const position_t x, const position_t y, const std::string& text,
-	const std::tuple<float, float, float, float>& text_color):
-	GlComponent(window, window_index, parent, parent_index, x, y, 0.0f, 0.0f),
-	text(text), text_color(text_color)
+	std::size_t parent_index, const LabelParams& params):
+	GlComponent(window, window_index, parent, parent_index, {params.x, params.y, 0.0f, 0.0f}),
+	text(params.text), text_color(params.text_color)
 {
 	if constexpr(uui::Application::debug_mode)
 		std::cout << "Creating GlLabel " << parent_index << std::endl;
diff --git a/src/uui/opengl/stack.cpp b/src/uui/opengl/stack.cpp
index cc3a40e..f736185 100644
--- a/src/uui/opengl/stack.cpp
+++ b/src/uui/opengl/stack.cpp
@@ -7,20 +7,19 @@
 
 uui::GlStack::GlStack(
 	std::shared_ptr<uui::GlWindow> window, std::size_t window_index, std::shared_ptr<uui::GlContainer> parent,
-	std::size_t parent_index, const position_t x, const position_t y, const Direction direction):
-	GlComponent(window, window_index, parent, parent_index, x, y, 0.0f, 0.0f)
+	std::size_t parent_index, const StackParams& params):
+	GlComponent(window, window_index, parent, parent_index, {params.x, params.y, 0.0f, 0.0f})
 {
 	if constexpr(uui::GlApplication::debug_mode)
 		std::cout << "Creating GlStack " << parent_index << std::endl;
 
-	this->direction = direction;
+	direction = params.direction;
 
 	type = Type::STACK;
 	coord_all_relative = false;
 }
 
-void uui::GlStack::create_component(
-	const uui::position_t width, const uui::position_t height, uui::InitFunction<uui::Component> init)
+void uui::GlStack::create_component(const StackComponentParams& params, uui::InitFunction<uui::Component> init)
 {
 	if(!initialized)
 		throw std::runtime_error("GlWindow error : cannot create component while not initialized");
@@ -28,7 +27,7 @@ void uui::GlStack::create_component(
 	glfwMakeContextCurrent(gl_window->glfw_window);
 	std::shared_ptr<uui::GlComponent> component(new uui::GlComponent(
 		gl_window, gl_window->components.size(), std::dynamic_pointer_cast<uui::GlContainer>(shared_from_this()),
-		components.size(), 0, 0, width, height));
+		components.size(), {0, 0, params.width, params.height}));
 	push_child(component);
 	component->init();
 	std::tie(component->position_x, component->position_y) = get_child_position(components.size() - 1);
@@ -38,9 +37,7 @@ void uui::GlStack::create_component(
 		init(*component);
 }
 
-void uui::GlStack::create_label(
-	const std::string& text, const std::tuple<float, float, float, float>& text_color,
-	uui::InitFunction<uui::Label> init)
+void uui::GlStack::create_label(const StackLabelParams& params, uui::InitFunction<uui::Label> init)
 {
 	if(!initialized)
 		throw std::runtime_error("GlWindow error : cannot create component while not initialized");
@@ -48,7 +45,7 @@ void uui::GlStack::create_label(
 	glfwMakeContextCurrent(gl_window->glfw_window);
 	std::shared_ptr<uui::GlLabel> label(new uui::GlLabel(
 		gl_window, gl_window->components.size(), std::dynamic_pointer_cast<uui::GlContainer>(shared_from_this()),
-		components.size(), 0, 0, text, text_color));
+		components.size(), {0, 0, params.text, params.text_color}));
 	push_child(std::static_pointer_cast<uui::GlComponent>(label));
 	label->init();
 	std::tie(label->position_x, label->position_y) = get_child_position(components.size() - 1);
diff --git a/src/uui/opengl/window.cpp b/src/uui/opengl/window.cpp
index 19f0dea..6fd60d0 100644
--- a/src/uui/opengl/window.cpp
+++ b/src/uui/opengl/window.cpp
@@ -267,16 +267,13 @@ void uui::GlWindow::render()
 	_render_needed = false;
 }
 
-void uui::GlWindow::create_component(
-	const uui::position_t x, const uui::position_t y, const uui::position_t width, const uui::position_t height,
-	uui::InitFunction<Component> init)
+void uui::GlWindow::create_component(const uui::ComponentParams& params, uui::InitFunction<Component> init)
 {
 	if(!_initialized)
 		throw std::runtime_error("GlWindow error : cannot create component while not initialized");
 
 	glfwMakeContextCurrent(glfw_window);
-	std::shared_ptr<uui::GlComponent> component(
-		new uui::GlComponent(shared_from_this(), components.size(), x, y, width, height));
+	std::shared_ptr<uui::GlComponent> component(new uui::GlComponent(shared_from_this(), components.size(), params));
 	push_child(component);
 	component->init();
 
@@ -284,16 +281,13 @@ void uui::GlWindow::create_component(
 		init(*component);
 }
 
-void uui::GlWindow::create_label(
-	const uui::position_t x, const uui::position_t y, const std::string& text,
-	const std::tuple<float, float, float, float>& text_color, uui::InitFunction<Label> init)
+void uui::GlWindow::create_label(const LabelParams& params, uui::InitFunction<Label> init)
 {
 	if(!_initialized)
 		throw std::runtime_error("GlWindow error : cannot create label while not initialized");
 
 	glfwMakeContextCurrent(glfw_window);
-	std::shared_ptr<uui::GlLabel> label(
-		new uui::GlLabel(shared_from_this(), components.size(), x, y, text, text_color));
+	std::shared_ptr<uui::GlLabel> label(new uui::GlLabel(shared_from_this(), components.size(), params));
 	push_child(std::static_pointer_cast<uui::GlComponent>(label));
 	label->init();
 
@@ -301,14 +295,13 @@ void uui::GlWindow::create_label(
 		init(*label);
 }
 
-void uui::GlWindow::create_flex(
-	const uui::position_t x, const uui::position_t y, const uui::Direction direction, uui::InitFunction<Flex> init)
+void uui::GlWindow::create_flex(const StackParams& params, uui::InitFunction<Flex> init)
 {
 	if(!_initialized)
 		throw std::runtime_error("GlWindow error : cannot create flex while not initialized");
 
 	glfwMakeContextCurrent(glfw_window);
-	std::shared_ptr<uui::GlFlex> flex(new uui::GlFlex(shared_from_this(), components.size(), x, y, direction));
+	std::shared_ptr<uui::GlFlex> flex(new uui::GlFlex(shared_from_this(), components.size(), params));
 	push_child(std::static_pointer_cast<uui::GlComponent>(flex));
 	flex->init();
 
@@ -316,14 +309,13 @@ void uui::GlWindow::create_flex(
 		init(*flex);
 }
 
-void uui::GlWindow::create_stack(
-	const uui::position_t x, const uui::position_t y, const uui::Direction direction, uui::InitFunction<Stack> init)
+void uui::GlWindow::create_stack(const StackParams& params, uui::InitFunction<Stack> init)
 {
 	if(!_initialized)
 		throw std::runtime_error("GlWindow error : cannot create stack while not initialized");
 
 	glfwMakeContextCurrent(glfw_window);
-	std::shared_ptr<uui::GlStack> stack(new uui::GlStack(shared_from_this(), components.size(), x, y, direction));
+	std::shared_ptr<uui::GlStack> stack(new uui::GlStack(shared_from_this(), components.size(), params));
 	push_child(std::static_pointer_cast<uui::GlComponent>(stack));
 	stack->init();