qtest: enable vnc-display test on win32

Now that qtest_qmp_add_client() works on win32, we can enable the VNC
test.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230306122751.2355515-11-marcandre.lureau@redhat.com>

tests/qtest/vnc-display-test.c

@@ -19,7 +19,7 @@ typedef struct Test {
     GMainLoop *loop;
 } Test;
 
-#if !defined(WIN32) && !defined(CONFIG_DARWIN)
+#if !defined(CONFIG_DARWIN)
 
 static void on_vnc_error(VncConnection* self,
                          const char* msg)
@@ -38,10 +38,7 @@ static void on_vnc_auth_failure(VncConnection *self,
 static bool
 test_setup(Test *test)
 {
-#ifdef WIN32
-    g_test_skip("Not supported on Windows yet");
-    return false;
-#elif defined(CONFIG_DARWIN)
+#if defined(CONFIG_DARWIN)
     g_test_skip("Broken on Darwin");
     return false;
 #else
@@ -59,7 +56,12 @@ test_setup(Test *test)
     g_signal_connect(test->conn, "vnc-auth-failure",
                      G_CALLBACK(on_vnc_auth_failure), NULL);
     vnc_connection_set_auth_type(test->conn, VNC_CONNECTION_AUTH_NONE);
+
+#ifdef WIN32
+    vnc_connection_open_fd(test->conn, _get_osfhandle(pair[0]));
+#else
     vnc_connection_open_fd(test->conn, pair[0]);
+#endif
 
     test->loop = g_main_loop_new(NULL, FALSE);
     return true;