Optimize Flush in display menu

These changes ensures that only one flush is active when the fade-in thread
is running.
The first Pixmap::Lock() in cNopacityDisplayMenu::Action() takes so much longer
than the following, Thats why the first Pixmap::Lock() was moved before the while
loop. This makes the fade-in softer.
The DetailView thread was eliminated.

1 files changed, 1 insertions, 0 deletions

diff --git a/displaymenu.h b/displaymenu.h
index 890ffa5..dff7ae8 100644
--- a/displaymenu.h
+++ b/displaymenu.h
@@ -34,6 +34,7 @@ private:
     void DrawTimers(bool timersChanged, int numConflicts);
     void SplitItem(const char *Text, cString *strItems, int *tabItems);
     void SetButtonPositions(void);
+    void SetAlpha(int Alpha = 0, bool force = false);
     virtual void Action(void);
 protected:
     int Tab(int n);