[greatlrd] 27884: patch from Physicus, fixing drag and drop issue. do not crash the desktop if u trying move icon. (this patch are not in trunks)

Author: greatlrd
Date: Fri Jul 27 00:24:09 2007
New Revision: 27884

URL: http://svn.reactos.org/svn/reactos?rev=27884&view=rev
Log:
patch from Physicus, fixing drag and drop issue. 
do not crash the desktop if u trying move icon. 
(this patch are not in trunks)

Modified:
    branches/ros-branch-0_3_3/reactos/dll/win32/shell32/shlview.c

Modified: branches/ros-branch-0_3_3/reactos/dll/win32/shell32/shlview.c
URL: http://svn.reactos.org/svn/reactos/branches/ros-branch-0_3_3/reactos/dll/win...
==============================================================================
--- branches/ros-branch-0_3_3/reactos/dll/win32/shell32/shlview.c (original)
+++ branches/ros-branch-0_3_3/reactos/dll/win32/shell32/shlview.c Fri Jul 27 00:24:09 2007
@@ -2307,12 +2307,14 @@
 static HRESULT WINAPI ISVDropTarget_DragLeave(IDropTarget *iface) {
     IShellViewImpl *This = impl_from_IDropTarget(iface);

-    IDropTarget_DragLeave(This->pCurDropTarget);
-
-    IDropTarget_Release(This->pCurDropTarget);
+    if (This->pCurDropTarget)
+    {
+        IDropTarget_DragLeave(This->pCurDropTarget);
+        IDropTarget_Release(This->pCurDropTarget);
+        This->pCurDropTarget = NULL;
+    }
     IDataObject_Release(This->pCurDataObject);
     This->pCurDataObject = NULL;
-    This->pCurDropTarget = NULL;
     This->iDragOverItem = 0;

return S_OK;
@@ -2323,12 +2325,15 @@
 {
     IShellViewImpl *This = impl_from_IDropTarget(iface);

-    IDropTarget_Drop(This->pCurDropTarget, pDataObject, grfKeyState, pt, pdwEffect);
-
-    IDropTarget_Release(This->pCurDropTarget);
+    if (This->pCurDropTarget)
+    {
+        IDropTarget_Drop(This->pCurDropTarget, pDataObject, grfKeyState, pt, pdwEffect);
+        IDropTarget_Release(This->pCurDropTarget);
+        This->pCurDropTarget = NULL;
+    }
+
     IDataObject_Release(This->pCurDataObject);
     This->pCurDataObject = NULL;
-    This->pCurDropTarget = NULL;
     This->iDragOverItem = 0;

return S_OK;
@@ -2565,3 +2570,4 @@
    ISVViewObject_SetAdvise,
    ISVViewObject_GetAdvise
 };
+