Create window

README.md

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 # filemanager
 
+FileManager on GTK4

builder.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+	<requires lib="gtk" version="4.0"/>
+	<object class="GtkWindow" id="window">
+		<property name="title">File Manager</property>
+		<property name="default-width">800</property>
+		<property name="default-height">300</property>
+		<property name="child">
+			<object class="GtkLabel" id="label">
+				<property name="label">Hi</property>
+			</object>
+		</property>
+	</object>
+</interface>

compile

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+gcc $(pkg-config --cflags gtk4) -o filemanager.out main.c $(pkg-config --libs gtk4)

main.c

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+#include <gtk/gtk.h>
+
+static void app_activate (GtkApplication *app, gpointer *user_data){
+	GtkBuilder *builder = gtk_builder_new_from_file("builder.ui");
+	GObject* window = gtk_builder_get_object(builder, "window");
+	gtk_window_set_application(GTK_WINDOW(window),app);
+	g_object_unref(builder);
+	gtk_window_present(GTK_WINDOW(window));
+	g_print("Started\n");
+}
+
+int main (int argc, char **argv){
+    GtkApplication *app = gtk_application_new ("file.manager", G_APPLICATION_DEFAULT_FLAGS);
+    g_signal_connect (app, "activate", G_CALLBACK(app_activate),NULL);
+    int status = g_application_run (G_APPLICATION (app), argc, argv);
+    g_object_unref(app);
+    return status;
+}