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-rw-r--r--src/Fl_win32.cxx8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 607b8b750..a330b4dd0 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -1188,6 +1188,14 @@ int fl_disable_transient_for; // secret method of removing TRANSIENT_FOR
Fl_X* Fl_X::make(Fl_Window* w) {
Fl_Group::current(0); // get rid of very common user bug: forgot end()
+ // if the window is a subwindow and our parent is not mapped yet, we
+ // mark this window visible, so that mapping the parent at a later
+ // point in time will call this function again to finally map the subwindow.
+ if (w->parent() && !Fl_X::i(w->window())) {
+ w->set_visible();
+ return 0L;
+ }
+
static NameList class_name_list;
static const char *first_class_name = 0L;
const char *class_name = w->xclass();