From 1bc6c900869fe1a01279d199a7a0f7452b145dde Mon Sep 17 00:00:00 2001
From: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
Date: Mon, 27 May 2024 09:05:44 +0900
Subject: [PATCH] [SHELL32] CDefView: Implement SFVM_CANSELECTALL callback
 (#6945)

Implementing missing folder view callbacks...
JIRA issue: CORE-19616
- Call SFVM_CANSELECTALL callback on FCIDM_SHVIEW_SELECTALL.
- If it returned S_FALSE, then do not select all.
---
 dll/win32/shell32/CDefView.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dll/win32/shell32/CDefView.cpp b/dll/win32/shell32/CDefView.cpp
index 5c4b4a7f8c6..0e60f8eeee2 100644
--- a/dll/win32/shell32/CDefView.cpp
+++ b/dll/win32/shell32/CDefView.cpp
@@ -1983,7 +1983,8 @@ LRESULT CDefView::OnCommand(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHand
                 AutoArrange();
             break;
         case FCIDM_SHVIEW_SELECTALL:
-            m_ListView.SetItemState(-1, LVIS_SELECTED, LVIS_SELECTED);
+            if (_DoFolderViewCB(SFVM_CANSELECTALL, 0, 0) != S_FALSE)
+                m_ListView.SetItemState(-1, LVIS_SELECTED, LVIS_SELECTED);
             break;
         case FCIDM_SHVIEW_INVERTSELECTION:
             nCount = m_ListView.GetItemCount();