From 6b3fd04e24d20530b276de5307cbc6737b0c6a4d Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sun, 17 Oct 2021 01:00:19 +0100
Subject: [PATCH] Initialize wxGenericImageList members in default ctor

Don't leave m_useMask and m_scaleFactor uninitialized -- even if this
probably doesn't matter, call Create() to make sure they have
well-defined values for the default-constructed objects.
---
 include/wx/generic/imaglist.h | 2 +-
 src/generic/imaglist.cpp      | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/wx/generic/imaglist.h b/include/wx/generic/imaglist.h
index a720c36a2d..b29c495571 100644
--- a/include/wx/generic/imaglist.h
+++ b/include/wx/generic/imaglist.h
@@ -22,7 +22,7 @@ class WXDLLIMPEXP_FWD_CORE wxColour;
 class WXDLLIMPEXP_CORE wxGenericImageList: public wxObject
 {
 public:
-    wxGenericImageList() { }
+    wxGenericImageList();
     wxGenericImageList( int width, int height, bool mask = true, int initialCount = 1 );
     virtual ~wxGenericImageList();
     bool Create( int width, int height, bool mask = true, int initialCount = 1 );
diff --git a/src/generic/imaglist.cpp b/src/generic/imaglist.cpp
index b72dd29d51..83e5173ab8 100644
--- a/src/generic/imaglist.cpp
+++ b/src/generic/imaglist.cpp
@@ -29,6 +29,11 @@
 wxIMPLEMENT_DYNAMIC_CLASS(wxGenericImageList, wxObject);
 wxIMPLEMENT_DYNAMIC_CLASS(wxImageList, wxGenericImageList);
 
+wxGenericImageList::wxGenericImageList()
+{
+    Create(0, 0, false);
+}
+
 wxGenericImageList::wxGenericImageList( int width, int height, bool mask, int initialCount )
 {
     (void)Create(width, height, mask, initialCount);