Committing in .

[wxWidgets.git] / src / common / dobjcmn.cpp

diff --git a/src/common/dobjcmn.cpp b/src/common/dobjcmn.cpp
index 50b6fe07188790ab528463a8dcc4bc77e9048c47..aadd3914f34a8593225923427e20c02e703a5aa6 100644 (file)
--- a/src/common/dobjcmn.cpp
+++ b/src/common/dobjcmn.cpp
@@ -47,7 +47,7 @@ WX_DEFINE_LIST(wxSimpleDataObjectList);
 // ----------------------------------------------------------------------------
 
 static wxDataFormat dataFormatInvalid;
-const wxDataFormat& wxFormatInvalid = dataFormatInvalid;
+WXDLLEXPORT const wxDataFormat& wxFormatInvalid = dataFormatInvalid;
 
 // ============================================================================
 // implementation
@@ -61,6 +61,33 @@ wxDataObjectBase::~wxDataObjectBase()
 {
 }
 
+bool wxDataObjectBase::IsSupported(const wxDataFormat& format,
+                                   Direction dir) const
+{
+    size_t nFormatCount = GetFormatCount(dir);
+    if ( nFormatCount == 1 )
+    {
+        return format == GetPreferredFormat(dir);
+    }
+    else
+    {
+        wxDataFormat *formats = new wxDataFormat[nFormatCount];
+        GetAllFormats(formats, dir);
+
+        size_t n;
+        for ( n = 0; n < nFormatCount; n++ )
+        {
+            if ( formats[n] == format )
+                break;
+        }
+
+        delete [] formats;
+
+        // found?
+        return n < nFormatCount;
+    }
+}
+
 // ----------------------------------------------------------------------------
 // wxDataObjectComposite
 // ----------------------------------------------------------------------------
@@ -232,9 +259,9 @@ void wxFileDataObjectBase::SetFilenames(const wxChar* filenames)
 wxCustomDataObject::wxCustomDataObject(const wxDataFormat& format)
     : wxDataObjectSimple(format)
 {
+    m_data = (void *)NULL;
 }
 
-
 wxCustomDataObject::~wxCustomDataObject()
 {
     Free();
@@ -293,15 +320,21 @@ bool wxCustomDataObject::SetData(size_t size, const void *buf)
 // 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()
-                : wxDropTarget(new wxTextDataObject)
 {
+    SetDataObject(new wxTextDataObject);
 }
 
 wxDragResult wxTextDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
@@ -318,8 +351,8 @@ wxDragResult wxTextDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
 // ----------------------------------------------------------------------------
 
 wxFileDropTarget::wxFileDropTarget()
-                : wxDropTarget(new wxFileDataObject)
 {
+    SetDataObject(new wxFileDataObject);
 }
 
 wxDragResult wxFileDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
@@ -331,3 +364,5 @@ wxDragResult wxFileDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
     return OnDropFiles(x, y, dobj->GetFilenames()) ? def : wxDragNone;
 }
 
+#endif
+