gtk_with_builder.kt

package sample

import glibresources.*
import kotlinx.cinterop.*
import libgtk3.*
import libgtk3.G_APPLICATION_FLAGS_NONE




var builder: CPointer<GtkBuilder>? = null

fun incrementProgressBar() {
    println("Inside thread ... ")
    g_idle_add(staticCFunction { _: CPointer<GtkApplication> ->
        println("Thread compsadasdasdleted...")
        println(builder)
        return@staticCFunction FALSE
    }.reinterpret(), null)
    println("Thread completed...")
}



@ExperimentalUnsignedTypes
fun main(args: Array<String>) {

    glibresources_get_resource()

    val app = gtk_application_new("org.gtk.example", G_APPLICATION_FLAGS_NONE)

    builder = gtk_builder_new()
    gtk_builder_set_application(builder?.reinterpret(), app?.reinterpret())

    memScoped {

        val argc = alloc<IntVar>().apply { value = args.size }
        val argv = alloc<CPointerVar<CPointerVar<ByteVar>>>().apply {
                value = args.map { it.cstr.ptr }.toCValues().ptr
            }

        gtk_init(argc.ptr, argv.ptr)
    }

    if(gtk_builder_add_from_resource(builder, "/org/gtk/example/layout/simple.ui", null) == 1u){
        val mainWindow = gtk_builder_get_object(builder, "window")?.reinterpret<GtkWidget>()
        libgtk3.g_signal_connect_object(mainWindow, "destroy", staticCFunction { _: CPointer<GtkApplication> ->
            gtk_main_quit() }.reinterpret(), null, 0u)
        g_thread_new(null , staticCFunction(::incrementProgressBar).reinterpret(), null)
        gtk_main()
        gtk_widget_show_all(mainWindow?.reinterpret())
    }

}