From 7faddb698f41d6b1f6cd4768f3ce2c639c38eaf4 Mon Sep 17 00:00:00 2001
From: wp_xxyyzz <wp_xxyyzz@8e941d3f-bd1b-0410-a28a-d453659cc2b4>
Date: Sat, 13 Apr 2019 08:59:45 +0000
Subject: [PATCH] fpspreadsheet: Disable DEL key in worksheet grid when a cell
 is protected from being edited.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@6845 8e941d3f-bd1b-0410-a28a-d453659cc2b4
---
 .../fpspreadsheet/source/visual/fpspreadsheetgrid.pas  | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/components/fpspreadsheet/source/visual/fpspreadsheetgrid.pas b/components/fpspreadsheet/source/visual/fpspreadsheetgrid.pas
index 4edacc8db..02ef52d44 100644
--- a/components/fpspreadsheet/source/visual/fpspreadsheetgrid.pas
+++ b/components/fpspreadsheet/source/visual/fpspreadsheetgrid.pas
@@ -4662,10 +4662,12 @@ begin
     VK_F2:
       FEnhEditMode := true;
     VK_DELETE:
-      if (ssCtrl in Shift) then
-        Worksheet.DeleteSelection
-      else
-        Worksheet.EraseSelection(true);
+      if not FReadOnly then begin
+        if (ssCtrl in Shift) then
+          Worksheet.DeleteSelection
+        else
+          Worksheet.EraseSelection(true);
+      end;
   end;
 
   inherited;