X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9e2896e5c8944c5f5227fa080e1b781c4a6f2600..41b1047d910c3aba988b5b619ba885b7ac89cf20:/src/common/dobjcmn.cpp?ds=sidebyside

diff --git a/src/common/dobjcmn.cpp b/src/common/dobjcmn.cpp
index 9c5e5ddc39..a71231b2ae 100644
--- a/src/common/dobjcmn.cpp
+++ b/src/common/dobjcmn.cpp
@@ -42,6 +42,13 @@
 
 WX_DEFINE_LIST(wxSimpleDataObjectList);
 
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+static wxDataFormat dataFormatInvalid;
+const wxDataFormat& wxFormatInvalid = dataFormatInvalid;
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -90,7 +97,7 @@ wxDataObjectComposite::GetPreferredFormat(Direction WXUNUSED(dir)) const
 {
     wxSimpleDataObjectList::Node *node = m_dataObjects.Item( m_preferred );
 
-    wxCHECK_MSG( node, wxDF_INVALID, wxT("no preferred format") );
+    wxCHECK_MSG( node, wxFormatInvalid, wxT("no preferred format") );
 
     wxDataObjectSimple* dataObj = node->GetData();
 
@@ -222,6 +229,12 @@ void wxFileDataObjectBase::SetFilenames(const wxChar* filenames)
 // wxCustomDataObject
 // ----------------------------------------------------------------------------
 
+wxCustomDataObject::wxCustomDataObject(const wxDataFormat& format)
+    : wxDataObjectSimple(format)
+{
+    m_data = (void *)NULL;
+}
+
 wxCustomDataObject::~wxCustomDataObject()
 {
     Free();
@@ -276,3 +289,53 @@ bool wxCustomDataObject::SetData(size_t size, const void *buf)
     return TRUE;
 }
 
+// ============================================================================
+// some common dnd related code
+// ============================================================================
+
+#if wxUSE_DRAG_AND_DROP
+
+#include "wx/dnd.h"
+
+// ----------------------------------------------------------------------------
+// wxTextDropTarget
+// ----------------------------------------------------------------------------
+
+// NB: we can't use "new" in ctor initializer lists because this provokes an
+//     internal compiler error with VC++ 5.0 (hey, even gcc compiles this!),
+//     so use SetDataObject() instead
+
+wxTextDropTarget::wxTextDropTarget()
+{
+    SetDataObject(new wxTextDataObject);
+}
+
+wxDragResult wxTextDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
+{
+    if ( !GetData() )
+        return wxDragNone;
+
+    wxTextDataObject *dobj = (wxTextDataObject *)m_dataObject;
+    return OnDropText(x, y, dobj->GetText()) ? def : wxDragNone;
+}
+
+// ----------------------------------------------------------------------------
+// wxFileDropTarget
+// ----------------------------------------------------------------------------
+
+wxFileDropTarget::wxFileDropTarget()
+{
+    SetDataObject(new wxFileDataObject);
+}
+
+wxDragResult wxFileDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
+{
+    if ( !GetData() )
+        return wxDragNone;
+
+    wxFileDataObject *dobj = (wxFileDataObject *)m_dataObject;
+    return OnDropFiles(x, y, dobj->GetFilenames()) ? def : wxDragNone;
+}
+
+#endif
+