Add proper support for wxUSE_NATIVE_PROGRESSDLG

This symbol was wrongly added to include/wx/msw/setup0.h directly in
075ef6551e, so it didn't work when
cross-compiling from Unix (which doesn't use this file) and would have been
lost after any future modification of include/wx/setup_inc.h where it should
have been added in the first place.

Do this now and also make the check for this symbol in wx/progdlg.h a bit more
readable.

configure

@@ -36492,6 +36492,8 @@ fi
 if test "$wxUSE_PROGRESSDLG" = "yes"; then
     $as_echo "#define wxUSE_PROGRESSDLG 1" >>confdefs.h
 
+            $as_echo "#define wxUSE_NATIVE_PROGRESSDLG 1" >>confdefs.h
+
 fi
 
 if test "$wxUSE_SPLASH" = "yes"; then

configure.in

@@ -7079,6 +7079,9 @@ fi
 
 if test "$wxUSE_PROGRESSDLG" = "yes"; then
     AC_DEFINE(wxUSE_PROGRESSDLG)
+    dnl No special option for this one yet as it's supposed to be temporary and
+    dnl disappear later anyhow.
+    AC_DEFINE(wxUSE_NATIVE_PROGRESSDLG)
 fi
 
 if test "$wxUSE_SPLASH" = "yes"; then

include/wx/android/setup.h

@@ -1214,6 +1214,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

include/wx/gtk/setup0.h

@@ -1215,6 +1215,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

include/wx/motif/setup0.h

@@ -1215,6 +1215,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

include/wx/msw/setup0.h

@@ -1215,7 +1215,8 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
-// native MSW progress dialog class, flickering not yet debugged
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
 #define wxUSE_NATIVE_PROGRESSDLG 1
 
 // support for startup tips (wxShowTip &c)

include/wx/osx/setup0.h

@@ -1216,6 +1216,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

include/wx/progdlg.h

@@ -30,9 +30,17 @@
 
 #include "wx/generic/progdlgg.h"
 
-#if defined(__WXMSW__) && wxUSE_THREADS && !defined(__WXUNIVERSAL__) && wxUSE_NATIVE_PROGRESSDLG
-    #include "wx/msw/progdlg.h"
-#else
+#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
+    // The native implementation requires the use of threads and still has some
+    // problems, so it can be explicitly disabled.
+    #if wxUSE_THREADS && wxUSE_NATIVE_PROGRESSDLG
+        #define wxHAS_NATIVE_PROGRESSDIALOG
+        #include "wx/msw/progdlg.h"
+    #endif
+#endif
+
+// If there is no native one, just use the generic version.
+#ifndef wxHAS_NATIVE_PROGRESSDIALOG
     class WXDLLIMPEXP_CORE wxProgressDialog
                            : public wxGenericProgressDialog
     {
@@ -48,7 +56,7 @@
     private:
         wxDECLARE_DYNAMIC_CLASS_NO_COPY( wxProgressDialog );
     };
-#endif // defined(__WXMSW__) && wxUSE_THREADS
+#endif // !wxHAS_NATIVE_PROGRESSDIALOG
 
 #endif // wxUSE_PROGRESSDLG
 

include/wx/setup_inc.h

@@ -1211,6 +1211,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

include/wx/univ/setup0.h

@@ -1214,6 +1214,10 @@
 // progress dialog class for lengthy operations
 #define wxUSE_PROGRESSDLG 1
 
+// Set to 0 to disable the use of the native progress dialog (currently only
+// available under MSW and suffering from some bugs there, hence this option).
+#define wxUSE_NATIVE_PROGRESSDLG 1
+
 // support for startup tips (wxShowTip &c)
 #define wxUSE_STARTUP_TIPS 1
 

setup.h.in

@@ -500,6 +500,8 @@
 
 #define wxUSE_PROGRESSDLG 0
 
+#define wxUSE_NATIVE_PROGRESSDLG 0
+
 #define wxUSE_STARTUP_TIPS 0
 
 #define wxUSE_TEXTDLG 0