diff --git a/src/gui/main.cpp b/src/gui/main.cpp
index 539118a..29a4d5e 100644
--- a/src/gui/main.cpp
+++ b/src/gui/main.cpp
@@ -15,18 +15,8 @@
  * along with Memoserv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "memcard/memorycard.hpp"
-#include "widget/block_grid.hpp"
-#include "make_nana_animation.hpp"
-#include "memcard/make_memory_card.hpp"
 #include "command_line.hpp"
-#include <nana/gui.hpp>
-#include <nana/gui/widgets/label.hpp>
-#include <iostream>
-#include <fstream>
-
-#include <vector>
-#include <iostream>
+#include "run_gui.hpp"
 
 namespace {
 	const constexpr int g_def_icon_size = 48;
@@ -34,50 +24,9 @@ namespace {
 } //unnamed namespace
 
 int main(int argc, char* argv[]) {
-	using mc::psx::MemoryCard;
-
 	auto command = mc::parse_command_line(argc, argv);
 	if (command.should_quit)
 		return 0;
 
-	nana::form frm;
-
-	const MemoryCard mc1(mc::psx::make_memory_card("/home/michele/dev/code/cpp/memoserv/epsxe000_xa2.mcr"));
-	const MemoryCard mc2(mc::psx::make_memory_card("/home/michele/dev/code/cpp/memoserv/michele_epsxe000.mcr"));
-
-#if !defined(NDEBUG)
-	//grid1.bgcolor(nana::colors::azure);
-#endif
-
-	duck::widget::BlockGrid grid1{frm, 3, true};
-	duck::widget::BlockGrid grid2{frm, 3, true};
-
-	auto mc1_info = mc1.content_info();
-	std::cout << "memory card 1:\n";
-	std::cout << "\tuse byte: 0x" << std::hex << mc1_info.use_byte << std::dec << '\n';
-	std::cout << "\tavailable blocks: 0x" << std::hex << static_cast<int>(mc1_info.available_blocks) << std::dec << '\n';
-
-	for (int z = 0; z < 15; ++z) {
-		if (mc1[z].has_magic())
-			grid1.emplace_back(duck::make_nana_animation(mc1[z], g_def_icon_size, g_def_icon_size, g_def_icon_fps));
-		if (mc2[z].has_magic())
-			grid2.emplace_back(duck::make_nana_animation(mc2[z], g_def_icon_size, g_def_icon_size, g_def_icon_fps));
-	}
-
-	nana::label label1 {frm, "Slot 1"};
-	nana::label label2 {frm, "Slot 2"};
-
-	std::cout << "Hello world\n";
-	frm.div("fit margin=3 <vert fit slot1> <width=25> <vert fit slot2>");
-	frm["slot1"] << label1 << grid1;
-	frm["slot2"] << label2 << grid2;
-	frm.collocate();
-	frm.show();
-
-	//const MemoryCard mc(std::ifstream("/home/michele/emu/psx/WipEout 3 - Special Edition (Europe) (En,Fr,De,Es,It).srm", std::ios::binary));
-	//MemoryCard mc(std::ifstream("/home/michele/emu/psx/Rapid Racer (Europe) (En,Fr,De,Es,It).srm", std::ios::binary));
-
-
-	nana::exec();
-	return 0;
+	return mc::run_gui(g_def_icon_size, g_def_icon_fps);
 }
diff --git a/src/gui/main_window.cpp b/src/gui/main_window.cpp
new file mode 100644
index 0000000..ab68312
--- /dev/null
+++ b/src/gui/main_window.cpp
@@ -0,0 +1,52 @@
+#include "main_window.hpp"
+#include "memcard/memorycard.hpp"
+#include "make_nana_animation.hpp"
+#include "memcard/make_memory_card.hpp"
+#include <iostream>
+#include <fstream>
+
+namespace mc {
+MainWindow::MainWindow (int icon_size, int icon_fps) :
+	m_frm(),
+	m_grid1(m_frm, 3, true),
+	m_grid2(m_frm, 3, true),
+	m_label1(m_frm, "Slot 1"),
+	m_label2(m_frm, "Slot 2"),
+	m_icon_size(icon_size),
+	m_icon_fps(icon_fps)
+{
+	using mc::psx::MemoryCard;
+
+#if !defined(NDEBUG)
+	m_grid1.bgcolor(nana::colors::azure);
+#endif
+
+	const MemoryCard mc1(mc::psx::make_memory_card("/home/michele/dev/code/cpp/memoserv/epsxe000_xa2.mcr"));
+	const MemoryCard mc2(mc::psx::make_memory_card("/home/michele/dev/code/cpp/memoserv/michele_epsxe000.mcr"));
+
+
+	//auto mc1_info = mc1.content_info();
+	//std::cout << "memory card 1:\n";
+	//std::cout << "\tuse byte: 0x" << std::hex << mc1_info.use_byte << std::dec << '\n';
+	//std::cout << "\tavailable blocks: 0x" << std::hex << static_cast<int>(mc1_info.available_blocks) << std::dec << '\n';
+
+	for (int z = 0; z < 15; ++z) {
+		if (mc1[z].has_magic())
+			m_grid1.emplace_back(duck::make_nana_animation(mc1[z], m_icon_size, m_icon_size, m_icon_fps));
+		if (mc2[z].has_magic())
+			m_grid2.emplace_back(duck::make_nana_animation(mc2[z], m_icon_size, m_icon_size, m_icon_fps));
+	}
+
+	m_frm.div("fit margin=3 <vert fit slot1> <width=25> <vert fit slot2>");
+	m_frm["slot1"] << m_label1 << m_grid1;
+	m_frm["slot2"] << m_label2 << m_grid2;
+	m_frm.collocate();
+
+	//const MemoryCard mc(std::ifstream("/home/michele/emu/psx/WipEout 3 - Special Edition (Europe) (En,Fr,De,Es,It).srm", std::ios::binary));
+	//MemoryCard mc(std::ifstream("/home/michele/emu/psx/Rapid Racer (Europe) (En,Fr,De,Es,It).srm", std::ios::binary));
+}
+
+void MainWindow::show() {
+	m_frm.show();
+}
+} //namespace mc
diff --git a/src/gui/main_window.hpp b/src/gui/main_window.hpp
new file mode 100644
index 0000000..36ec0cf
--- /dev/null
+++ b/src/gui/main_window.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include "widget/block_grid.hpp"
+#include <nana/gui.hpp>
+#include <nana/gui/widgets/label.hpp>
+
+namespace mc {
+class MainWindow {
+public:
+	MainWindow (int icon_size, int icon_fps);
+	void show();
+
+private:
+	nana::form m_frm;
+	duck::widget::BlockGrid m_grid1;
+	duck::widget::BlockGrid m_grid2;
+	nana::label m_label1;
+	nana::label m_label2;
+
+	int m_icon_size;
+	int m_icon_fps;
+};
+} //namespace mc
diff --git a/src/gui/meson.build b/src/gui/meson.build
index 96b4eb8..fddf8d7 100644
--- a/src/gui/meson.build
+++ b/src/gui/meson.build
@@ -37,6 +37,8 @@ executable(app_name,
   'command_line.cpp',
   config_file,
   project_config_file,
+  'run_gui.cpp',
+  'main_window.cpp',
   dependencies: [
 	nana_dep,
 	x11_dep,
diff --git a/src/gui/run_gui.cpp b/src/gui/run_gui.cpp
new file mode 100644
index 0000000..585c1a0
--- /dev/null
+++ b/src/gui/run_gui.cpp
@@ -0,0 +1,12 @@
+#include "run_gui.hpp"
+#include "main_window.hpp"
+
+namespace mc {
+int run_gui(int icon_size, int icon_fps) {
+	MainWindow win(icon_size, icon_fps);
+	win.show();
+
+	nana::exec();
+	return 0;
+}
+} //namespace mc
diff --git a/src/gui/run_gui.hpp b/src/gui/run_gui.hpp
new file mode 100644
index 0000000..3033ea1
--- /dev/null
+++ b/src/gui/run_gui.hpp
@@ -0,0 +1,5 @@
+#pragma once
+
+namespace mc {
+int run_gui(int icon_size, int icon_fps);
+} //namespace mc