From 6c20d775c4fd77dfd7fb0e7e679ab8149760413a Mon Sep 17 00:00:00 2001
From: Knut Petter Lehre <kplehre@gmail.com>
Date: Sat, 9 May 2015 17:55:58 +0200
Subject: [PATCH] Fix adding blocks to existing selection in wxGrid by
 Ctrl-drag.

Allow using Ctrl-dragging to add more blocks to the existing selection,
similarly to how spreadsheets work.

Closes #14141.
---
 src/generic/grid.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/generic/grid.cpp b/src/generic/grid.cpp
index b271878957..d696f1044c 100644
--- a/src/generic/grid.cpp
+++ b/src/generic/grid.cpp
@@ -3941,7 +3941,9 @@ wxGrid::DoGridCellDrag(wxMouseEvent& event,
         case wxMOD_CONTROL:
             if ( m_selectedBlockCorner == wxGridNoCellCoords)
                 m_selectedBlockCorner = coords;
-            UpdateBlockBeingSelected(m_selectedBlockCorner, coords);
+            if ( isFirstDrag )
+                SetGridCursor(coords);
+            UpdateBlockBeingSelected(m_currentCellCoords, coords);
             break;
 
         case wxMOD_NONE: