diff --git a/samples/embedded/makefile.unx b/samples/embedded/makefile.unx
index b1f3ec8e..eb0b1ce2 100644
--- a/samples/embedded/makefile.unx
+++ b/samples/embedded/makefile.unx
@@ -10,7 +10,8 @@
 #
 
 PYVER = 3.7
-WX_CFG = ../../build/wxbld/wx-config
+# WX_CFG = ../../build/wxbld/wx-config
+WX_CFG = ../../build/wxbld/gtk3/wx-config
 
 PROGRAM = embedded
 OBJECTS = $(PROGRAM).o
diff --git a/samples/embedded/mondrian.xpm b/samples/embedded/mondrian.xpm
new file mode 100644
index 00000000..1fab9dbe
--- /dev/null
+++ b/samples/embedded/mondrian.xpm
@@ -0,0 +1,44 @@
+/* XPM */
+static const char *const mondrian_xpm[] = {
+/* columns rows colors chars-per-pixel */
+"32 32 6 1",
+"  c Black",
+". c Blue",
+"X c #00bf00",
+"o c Red",
+"O c Yellow",
+"+ c Gray100",
+/* pixels */
+"                                ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+" oooooo +++++++++++++++++++++++ ",
+"                                ",
+" ++++++ ++++++++++++++++++ .... ",
+" ++++++ ++++++++++++++++++ .... ",
+" ++++++ ++++++++++++++++++ .... ",
+" ++++++ ++++++++++++++++++ .... ",
+" ++++++ ++++++++++++++++++ .... ",
+" ++++++ ++++++++++++++++++      ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++ ++++++++++++++++++ ++++ ",
+" ++++++                    ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+" ++++++ OOOOOOOOOOOO XXXXX ++++ ",
+"                                "
+};