diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 11d23d0..828ab96 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -63,13 +63,10 @@ jobs:
     - name: Install libcurl
       run: |
         sudo apt-get update
-        sudo apt-get install -y libcurl4-openssl-dev
+        sudo apt-get install -y libcurl4-openssl-dev libgtk-3-dev
 
     - name: Build
       run: sudo make
-
-    - name: Copy libiup.so to linux-release/
-      run: cp lib/linux/libiup.so linux-release/
       
     - uses: actions/upload-artifact@v3
       with:
diff --git a/Makefile b/Makefile
index 0761dd4..97c9485 100644
--- a/Makefile
+++ b/Makefile
@@ -7,13 +7,14 @@ ifdef FLATPAK_ID
     USER_LIB_PATH := /app/lib
 endif
 
+PKG_CONFIG ?= pkg-config
+
 .PHONY: all
 all: build
 
 .PHONY: build
 build:
-	install -Dm644 lib/linux/libiup.so -t $(USER_LIB_PATH)
-	gcc sgdboop.c curl-helper.c string-helpers.c crc.c -liup -lcurl -o linux-release/SGDBoop $(LDFLAGS)
+	$(CC) -g sgdboop.c curl-helper.c gui-helper-gtk.c string-helpers.c crc.c $(shell $(PKG_CONFIG) --cflags --libs gtk+-3.0 libcurl) -o linux-release/SGDBoop $(LDFLAGS)
 
 ifdef FLATPAK_ID
 .PHONY: install
diff --git a/gui-helper-gtk.c b/gui-helper-gtk.c
new file mode 100644
index 0000000..2f79570
--- /dev/null
+++ b/gui-helper-gtk.c
@@ -0,0 +1,149 @@
+#include "gui-helper.h"
+#include <gtk/gtk.h>
+
+int ShowMessageBox(const char* title, const char* message)
+{
+	gtk_init(NULL, NULL);
+
+	//return SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_INFORMATION, title, message, NULL);
+	GtkWidget* dialog = gtk_message_dialog_new (
+		NULL,
+		0,
+		GTK_MESSAGE_ERROR,
+		GTK_BUTTONS_OK,
+		message
+	);
+	gtk_window_set_title(GTK_WINDOW(dialog), "title");
+
+	g_signal_connect_swapped (
+		dialog,
+		"response",
+		G_CALLBACK (gtk_widget_destroy),
+		dialog
+	);
+
+	return gtk_dialog_run(GTK_DIALOG(dialog));
+}
+
+enum {
+	COLUMN_ITEM = 0,
+	COLUMN_INDEX = 1,
+};
+
+static void button_callback(GtkWidget *widget, gpointer *data)
+{
+	GtkWidget* treeview = (GtkWidget*)data;
+
+	GtkTreeSelection* selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
+
+	GtkTreeModel *model;
+	GtkTreeIter iter;
+	if (gtk_tree_selection_get_selected(selection, &model, &iter))
+	{
+		int* selected_index = g_object_get_data(G_OBJECT(treeview), "selected_index");
+		gtk_tree_model_get (model, &iter, COLUMN_INDEX, selected_index, -1);  
+		gtk_main_quit();
+	}
+}
+
+int SelectionDialog(const char* title, int count, const char** list, int selection)
+{
+	gtk_init(NULL, NULL);
+
+	int selected_index = -1;
+
+	// Setup a stylesheet to match the original UI
+	const char* stylesheet = " \
+		#box { \
+			padding: 10px; \
+		} \
+	";
+
+	GtkCssProvider* provider = gtk_css_provider_new();
+	gtk_css_provider_load_from_data(provider, stylesheet, -1, NULL);
+
+	GdkDisplay* display = gdk_display_get_default();
+	GdkScreen* screen = gdk_display_get_default_screen(display);
+	gtk_style_context_add_provider_for_screen(screen, GTK_STYLE_PROVIDER(provider),  GTK_STYLE_PROVIDER_PRIORITY_USER);
+
+	// Put list into a GtkListStore
+	GtkListStore *store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT);
+
+	GtkTreeIter iter;
+	for (int i = 0; i < count; ++i) {
+		gtk_list_store_append(store, &iter);
+		gtk_list_store_set(store, &iter,
+			COLUMN_ITEM, list[i],
+			COLUMN_INDEX, i,
+			-1);
+	}
+
+	// Dervice a TreeView from the ListStore
+	GtkWidget *treeview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
+	// Attached the selected index to the treeview so we can easily reference it in the button callback
+	g_object_set_data(G_OBJECT(treeview), "selected_index", &selected_index);
+	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(treeview), FALSE);
+
+	// Change selection mode to single and set the current selected option if needed
+	{    
+		GtkTreeSelection* treeselection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
+		gtk_tree_selection_set_mode(treeselection, GTK_SELECTION_SINGLE);
+
+		if (selection < count && selection >= 0) {
+			GtkTreePath *path = gtk_tree_path_new_from_indices(selection, -1);
+			gtk_tree_selection_select_path(treeselection, path);
+			gtk_tree_path_free(path);
+		}
+	}
+
+	// Define TreeView Cell Layout in the UI
+	{    
+		GtkCellRenderer* renderer = gtk_cell_renderer_text_new ();
+		gtk_tree_view_insert_column_with_attributes (
+			GTK_TREE_VIEW(treeview),
+			-1,      
+			"",  
+			renderer,
+			"text", COLUMN_ITEM,
+			NULL
+		);
+	}
+
+	// Put the TreeView into a ScrolledWindow
+	GtkWidget* scrollable = gtk_scrolled_window_new(NULL, NULL);
+	gtk_container_add(GTK_CONTAINER(scrollable), treeview);
+
+	// Put a nice frame around the window to match the original 
+	GtkWidget* frame = gtk_frame_new(NULL);
+	gtk_container_add(GTK_CONTAINER(frame), scrollable);
+
+	GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	gtk_window_set_title(GTK_WINDOW(window), title);
+	gtk_window_set_default_size(GTK_WINDOW(window), 454, 388);
+	g_signal_connect(G_OBJECT(window), "destroy", gtk_main_quit, NULL);
+
+	GtkWidget* box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 10);
+	gtk_widget_set_name(box, "box");
+	gtk_container_add(GTK_CONTAINER(window), box);
+	gtk_box_pack_start(GTK_BOX(box), frame, TRUE, TRUE, 0);
+
+	GtkWidget* buttons = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5);
+	gtk_box_pack_end(GTK_BOX(box), buttons, FALSE, FALSE, 0);
+	gtk_widget_set_halign(buttons, GTK_ALIGN_END);
+	gtk_widget_set_valign(buttons, GTK_ALIGN_START);
+
+	GtkWidget* ok_button = gtk_button_new_with_label("OK");
+	gtk_widget_set_size_request(ok_button, 75, 40);
+	g_signal_connect(G_OBJECT(ok_button), "clicked", G_CALLBACK(button_callback), treeview);
+	gtk_container_add(GTK_CONTAINER(buttons), ok_button);
+
+	GtkWidget* cancel_button = gtk_button_new_with_label("Cancel");
+	gtk_widget_set_size_request(cancel_button, 75, 40);
+	g_signal_connect(G_OBJECT(cancel_button), "clicked", gtk_main_quit, NULL);
+	gtk_container_add(GTK_CONTAINER(buttons), cancel_button);
+
+	gtk_widget_show_all(window);
+	gtk_main();
+
+	return selected_index;
+}
\ No newline at end of file