From e898a9bb99b4e9783977e11e02a19742a2d57fec Mon Sep 17 00:00:00 2001
From: Svetlana Kulikova <Svetlana.Kulikova@onlyoffice.com>
Date: Sat, 11 Oct 2025 16:04:17 +0300
Subject: [PATCH] Fix bug 77224

---
 PdfFile/PdfEditor.cpp          | 12 ++++++++----
 PdfFile/PdfWriter.cpp          | 15 +++++++++------
 PdfFile/SrcWriter/Document.cpp | 15 +++++++++------
 3 files changed, 26 insertions(+), 16 deletions(-)

diff --git a/PdfFile/PdfEditor.cpp b/PdfFile/PdfEditor.cpp
index 58a14fb3d3..545bf15812 100644
--- a/PdfFile/PdfEditor.cpp
+++ b/PdfFile/PdfEditor.cpp
@@ -1464,6 +1464,7 @@ void CPdfEditor::Close()
 		return;
 	}
 
+	// m_nMode == Mode::WriteAppend
 	PDFDoc* pPDFDocument = m_pReader->GetPDFDocument(0);
 	PdfWriter::CDocument* pDoc = m_pWriter->GetDocument();
 	XRef* xref = pPDFDocument->getXRef();
@@ -2766,13 +2767,13 @@ bool CPdfEditor::DeletePage(int nPageIndex)
 	PdfWriter::CDocument* pDoc = m_pWriter->GetDocument();
 	PdfWriter::CPage* pPage = pDoc->GetPage(nPageIndex);
 	int nObjID = m_mObjManager.FindObj(pPage);
-	if (nObjID > 0)
+	bool bRes = pDoc->DeletePage(nPageIndex);
+	if (bRes && nObjID > 0)
 	{
 		m_mObjManager.RemoveObj(nObjID);
 		pDoc->RemoveObj(pPage);
 	}
-
-	return pDoc->DeletePage(nPageIndex);
+	return bRes;
 }
 bool CPdfEditor::AddPage(int nPageIndex)
 {
@@ -2837,6 +2838,9 @@ bool CPdfEditor::EditAnnot(int _nPageIndex, int nID)
 	if (pDoc->GetAnnot(nID))
 		return true;
 
+	if (m_nMode == Mode::Split || m_nMode == Mode::WriteNew)
+		return false;
+
 	XRef* xref = pPDFDocument->getXRef();
 	Ref* pPageRef = pPDFDocument->getCatalog()->getPageRef(nPageIndex);
 	if (!xref || !pPageRef || pPageRef->num == 0)
@@ -3122,7 +3126,7 @@ bool CPdfEditor::DeleteAnnot(int nID, Object* oAnnots)
 		pDoc->RemoveObj(pObj);
 		return true;
 	}
-	if (m_nMode == Mode::Split)
+	if (m_nMode == Mode::Split || m_nMode == Mode::WriteNew)
 		return true;
 
 	PDFDoc* pPDFDocument = NULL;
diff --git a/PdfFile/PdfWriter.cpp b/PdfFile/PdfWriter.cpp
index b504dfa2c1..3b655cbe7e 100644
--- a/PdfFile/PdfWriter.cpp
+++ b/PdfFile/PdfWriter.cpp
@@ -3075,14 +3075,17 @@ HRESULT CPdfWriter::EditWidgetParents(NSFonts::IApplicationFonts* pAppFonts, CWi
 
 		bool bReplase = false;
 		int nID = pP->GetObjId();
-		for (int i = 0; i < pKids->GetCount(); ++i)
+		if (nID > 0)
 		{
-			PdfWriter::CObjectBase* pKid = pKids->Get(i);
-			if (pKid->GetObjId() == nID)
+			for (int i = 0; i < pKids->GetCount(); ++i)
 			{
-				pKids->Insert(pKid, pP, true);
-				bReplase = true;
-				break;
+				PdfWriter::CObjectBase* pKid = pKids->Get(i);
+				if (pKid->GetObjId() == nID)
+				{
+					pKids->Insert(pKid, pP, true);
+					bReplase = true;
+					break;
+				}
 			}
 		}
 		if (!bReplase)
diff --git a/PdfFile/SrcWriter/Document.cpp b/PdfFile/SrcWriter/Document.cpp
index 8bec261142..380120fcc8 100644
--- a/PdfFile/SrcWriter/Document.cpp
+++ b/PdfFile/SrcWriter/Document.cpp
@@ -1646,14 +1646,17 @@ namespace PdfWriter
 			}
 			bool bReplase = false;
 			int nID = pWidget->GetObjId();
-			for (int i = 0; i < pKids->GetCount(); ++i)
+			if (nID > 0)
 			{
-				CObjectBase* pKid = pKids->Get(i);
-				if (pKid->GetObjId() == nID)
+				for (int i = 0; i < pKids->GetCount(); ++i)
 				{
-					pKids->Insert(pKid, pWidget, true);
-					bReplase = true;
-					break;
+					CObjectBase* pKid = pKids->Get(i);
+					if (pKid->GetObjId() == nID)
+					{
+						pKids->Insert(pKid, pWidget, true);
+						bReplase = true;
+						break;
+					}
 				}
 			}
 			if (!bReplase)