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-rw-r--r--src/Fl_Double_Window.cxx7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/Fl_Double_Window.cxx b/src/Fl_Double_Window.cxx
index 9bf3db289..559056a46 100644
--- a/src/Fl_Double_Window.cxx
+++ b/src/Fl_Double_Window.cxx
@@ -379,9 +379,9 @@ void fl_end_offscreen() {
/** @} */
-
-#else
+#elif defined(FL_PORTING)
# pragma message "FL_PORTING: implement offscreen render space generation and management"
+#else
# error unsupported platform
#endif
@@ -418,8 +418,9 @@ void Fl_Double_Window::flush(int eraseoverlay) {
myi->other_xid = fl_create_offscreen(w(), h());
clear_damage(FL_DAMAGE_ALL);
}
-#else
+#elif defined(FL_PORTING)
# pragma message "FL_PORTING: call a function to clear any graphics port damage flags"
+#else
# error unsupported platform
#endif
}