Prevent out of range data grid scroll when lowering BPP.

This was the true cause of #24

BinxelviewForm.cs

@@ -1583,8 +1583,9 @@ void redrawPreset()
                 r.Cells[2].Style.ForeColor = SystemColors.MenuHighlight;
                 dataGridPixel.Rows.Add(r);
             }
+            // If new BPP has fewer entries, the scroll position might be invalid. The grid is large enough to show 8 entries.
+            if ((old_scroll + 8) >= dataGridPixel.Rows.Count) old_scroll = dataGridPixel.Rows.Count - 8;
             if (old_scroll < 0) old_scroll = 0;
-            //if (old_scroll >= dataGridPixel.Rows.Count) old_scroll = 0;
             dataGridPixel.FirstDisplayedScrollingRowIndex = old_scroll;
             dataGridPixel.Enabled = !preset.chunky;
 

readme.txt

@@ -279,8 +279,9 @@ Changes
 
 1.6.3.0 (unreleased beta)
 - Fix relative INI path edge case, when the target directory has a similar name to the INI directory.
-- Fix intermittent crash bug when changing presets (re-entrant code).
+- Fix inefficient UI updates which were accidentally recursive.
 - Fix PixelView not updating scroll position on first open.
+- Fix crash bug when lowering BPP and bit ordering grid was scrolled down too far.
 
 1.6.2.0 (2024-10-13)
 - Option persistence, INI file save and load.