1 files changed, 119 insertions, 0 deletions
diff --git a/src/Authoring/Studio/_Win/DragNDrop/WinDnd.cpp b/src/Authoring/Studio/_Win/DragNDrop/WinDnd.cpp
new file mode 100644
index 00000000..d6216200
--- /dev/null
+++ b/src/Authoring/Studio/_Win/DragNDrop/WinDnd.cpp
@@ -0,0 +1,119 @@
+/****************************************************************************
+**
+** Copyright (C) 1999-2003 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//==============================================================================
+//	Includes
+//==============================================================================
+#include "stdafx.h"
+#include "WinDnd.h"
+#include "DropSource.h"
+
+//===============================================================================
+/**
+ * 	Constructor
+ */
+CWinDragManager::CWinDragManager()
+{
+    memset(&m_DragItem, 0, sizeof(SDropItem));
+}
+
+//===============================================================================
+/**
+ * 	Dtor
+ */
+CWinDragManager::~CWinDragManager()
+{
+}
+
+//===============================================================================
+/**
+ * 	This will take any data flavor and wrap it up into out drag data.
+ */
+void CWinDragManager::AddData(long inFlavor, void *inData, unsigned long inSize)
+{
+    m_DragItem.m_Flavor = inFlavor;
+    m_DragItem.m_Data = inData;
+    m_DragItem.m_Size = inSize;
+}
+
+//===============================================================================
+/**
+ * 	I made this so it would kind of match the MAC version.
+ */
+void CWinDragManager::StartDrag()
+{
+    Track();
+}
+
+//===============================================================================
+/**
+ * 	This is the Blocking function that does the Dragging.
+ *	It is assumed that all of the Data is is requested to be dragged, is already in the list
+ *	and we take it out of the list and pack it into the Win OLEDropSource and let it go.
+ *	We should only return when the whole operation is over.
+ */
+void CWinDragManager::Track()
+{
+    // Convert our data into a OLE DragSource.
+    HGLOBAL theGlobalData = nullptr;
+    COleDataSource theDataSource;
+
+    // Empty the data source
+    theDataSource.Empty();
+
+    // long		theDataSize = m_DragItem.m_Size;
+    void *theData = m_DragItem.m_Data;
+    long theFlavor = m_DragItem.m_Flavor;
+
+    // if ( theDataSize > 0 )
+    {
+        // Allocate a global block of data
+        DWORD theGlobalObjectSize = sizeof(CDropSource *);//sizeof(long /*theDataSize*/);
+        theGlobalData = GlobalAlloc(GHND, theGlobalObjectSize);
+
+        // Lock down the global memory object for copying data
+        CDropSource *theDropSource = reinterpret_cast<CDropSource *>(GlobalLock(theGlobalData));
+
+        // Copy the CDropSource pointer
+        CopyMemory(theDropSource, theData, theGlobalObjectSize);
+
+        // Unlock, but do not free
+        GlobalUnlock(theGlobalData);
+
+        // Prepare OLE data for transfer
+        theDataSource.CacheGlobalData((CLIPFORMAT)theFlavor, theGlobalData, nullptr);
+    }
+
+    // This will go through the framework.
+    if (DROPEFFECT_NONE == theDataSource.DoDragDrop()) {
+        theDataSource.Empty();
+        if (theGlobalData)
+            ::GlobalFree(theGlobalData);
+    }
+}