3 files changed, 16 insertions, 0 deletions
diff --git a/src/drivers/Darwin/Fl_Darwin_System_Driver.H b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
index df7705008..31b8e4564 100644
--- a/src/drivers/Darwin/Fl_Darwin_System_Driver.H
+++ b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
@@ -80,6 +80,11 @@ public:
   virtual char *preference_rootnode(Fl_Preferences *prefs, Fl_Preferences::Root root, const char *vendor,
                                    const char *application);
   virtual void *dlopen(const char *filename);
+  // these 4 are implemented in Fl_lock.cxx
+  virtual void awake(void*);
+  virtual int lock();
+  virtual void unlock();
+  virtual void* thread_message();
 };
 
 #endif // FL_DARWIN_SYSTEM_DRIVER_H
diff --git a/src/drivers/Posix/Fl_Posix_System_Driver.H b/src/drivers/Posix/Fl_Posix_System_Driver.H
index 549729651..67f060b04 100644
--- a/src/drivers/Posix/Fl_Posix_System_Driver.H
+++ b/src/drivers/Posix/Fl_Posix_System_Driver.H
@@ -81,6 +81,11 @@ public:
                                    const char *application);
   virtual int preferences_need_protection_check() {return 1;}
   virtual void *dlopen(const char *filename);
+  // these 4 are implemented in Fl_lock.cxx
+  virtual void awake(void*);
+  virtual int lock();
+  virtual void unlock();
+  virtual void* thread_message();
 };
 
 #endif // FL_POSIX_SYSTEM_DRIVER_H
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
index 49fb1da63..cbec9065d 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
+++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H
@@ -86,6 +86,12 @@ public:
   virtual void *dlopen(const char *filename);
   virtual void png_extra_rgba_processing(unsigned char *array, int w, int h);
   virtual const char *next_dir_sep(const char *start);
+  // these 3 are implemented in Fl_lock.cxx
+  virtual void awake(void*);
+  virtual int lock();
+  virtual void unlock();
+  // this one is implemented in Fl_win32.cxx
+  virtual void* thread_message();
 };
 
 #endif // FL_WINAPI_SYSTEM_DRIVER_H