diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb88506..509ebb4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,6 +88,7 @@ emulator.cpp
 filterchroma.cpp
 filterluma.cpp
 firmwarecard.cpp
+gtkutil.cpp
 gui.cpp
 keyboardbuffermode.cpp
 keyboard.cpp
@@ -193,6 +194,13 @@ find_package(wxWidgets REQUIRED COMPONENTS base core xrc qa)
 include(${wxWidgets_USE_FILE})
 target_link_libraries(${APP_NAME} PRIVATE ${wxWidgets_LIBRARIES})
 
+if(NOT (APPLE OR WIN32))
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(GTKMM REQUIRED gtk+-3.0)
+    target_include_directories(${APP_NAME} PRIVATE ${GTKMM_INCLUDE_DIRS})
+    target_link_libraries(${APP_NAME} PRIVATE ${GTKMM_LIBRARIES})
+endif()
+
 
 
 configure_file(src/config.h.in config.h)
diff --git a/src/gtkutil.cpp b/src/gtkutil.cpp
new file mode 100644
index 0000000..4e28668
--- /dev/null
+++ b/src/gtkutil.cpp
@@ -0,0 +1,15 @@
+#include "gtkutil.h"
+
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+
+void *get_gtk_native_window_handle(void *widget) {
+    GtkWidget *gtk_widget = GTK_WIDGET(widget);
+
+    gtk_widget_realize(gtk_widget);
+
+    GdkWindow *gdk_window = gtk_widget_get_window(gtk_widget);
+    Window xid = gdk_x11_window_get_xid(gdk_window);
+
+    return reinterpret_cast<void*>(xid);
+}
diff --git a/src/gtkutil.h b/src/gtkutil.h
new file mode 100644
index 0000000..056e59d
--- /dev/null
+++ b/src/gtkutil.h
@@ -0,0 +1,17 @@
+/* 
+ * File:   gtkutil.h
+ * Author: user
+ *
+ * Created on January 4, 2023, 7:18 AM
+ */
+
+#ifndef GTKUTIL_H
+#define GTKUTIL_H
+
+#ifdef __WXGTK__
+
+void *get_gtk_native_window_handle(void *widget);
+
+#endif
+
+#endif /* GTKUTIL_H */
diff --git a/src/screenimage.cpp b/src/screenimage.cpp
index b36be1c..6129ffe 100644
--- a/src/screenimage.cpp
+++ b/src/screenimage.cpp
@@ -21,8 +21,10 @@
 #include "e2const.h"
 #include "applentsc.h"
 #include "card.h"
+#include "gtkutil.h"
 #include "util.h"
 
+#include <wx/menu.h>
 #include <wx/panel.h>
 #include <wx/sizer.h>
 #include <wx/gdicmn.h>
@@ -74,6 +76,7 @@ ScreenImage::ScreenImage(KeyEventHandler &k) :
     cassOutName(32, ' '),
     keyEventHandler(k) {
     createScreen();
+    Center();
     Show();
     Bind(wxEVT_IDLE, &ScreenImage::OnIdle, this);
 }
@@ -120,19 +123,27 @@ void ScreenImage::createScreen() {
     notifyObservers();
 }
 
-void ScreenImage::createSdlTexture() {
-    WXWidget nativeSdl = this->sdl->GetHandle();
-    // TODO: do we need special gtk handling here, to get xid using:
-//    GtkWidget* widget = panel->GetHandle();
-//    gtk_widget_realize(widget);
-//    Window xid = GDK_WINDOW_XWINDOW(widget->window);
+static void *get_native_window_handle(wxWindowBase *panel) {
+    void *vn = static_cast<void*>(panel->GetHandle());
+#ifdef __WXGTK__
+    vn = get_gtk_native_window_handle(vn);
+#endif
+    return vn;
+}
 
-    this->window = SDL_CreateWindowFrom(static_cast<void*>(nativeSdl));
+void ScreenImage::createSdlTexture() {
+    void *nativeSdl = get_native_window_handle(this->sdl);
+
+    this->window = SDL_CreateWindowFrom(nativeSdl);
     if (this->window == NULL) {
         printf("Unable to create window: %s\n", SDL_GetError());
         throw ScreenException();
     }
 
+#ifdef __WXGTK__
+    SDL_SetWindowSize(this->window, SCRW, SCRH*ASPECT_RATIO);
+#endif
+
     this->renderer = SDL_CreateRenderer(this->window, -1, 0);
     if (this->renderer == NULL) {
         std::cerr << SDL_GetError() << std::endl;