put MyFrame creation code in its ctor, not in MyApp; create a status bar to show...

[wxWidgets.git] / samples / dnd / dnd.cpp

diff --git a/samples/dnd/dnd.cpp b/samples/dnd/dnd.cpp
index 2cc3a70155e4cc85adc03f2fe6b6e39963d60ae0..9c2651c34bf5ea12577d405241e74a271ef20622 100644 (file)
--- a/samples/dnd/dnd.cpp
+++ b/samples/dnd/dnd.cpp
@@ -19,21 +19,13 @@
 #include "wx/wx.h"
 #endif
 
 #include "wx/wx.h"
 #endif
 

-#include "wx/intl.h"
-#include "wx/log.h"
-

 #include "wx/dnd.h"
 #include "wx/dnd.h"

-#include "wx/dirdlg.h"
-#include "wx/filedlg.h"
+#include "wx/dataobj.h"

 #include "wx/image.h"
 #include "wx/clipbrd.h"
 #include "wx/colordlg.h"
 #include "wx/image.h"
 #include "wx/clipbrd.h"
 #include "wx/colordlg.h"

-#include "wx/sizer.h"
-#include "wx/dataobj.h"
-
-#if wxUSE_METAFILES
-    #include "wx/metafile.h"
-#endif // wxUSE_METAFILES
+#include "wx/metafile.h"
+#include "wx/dirctrl.h"

 
 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
     #include "../sample.xpm"
 
 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
     #include "../sample.xpm"


@@ -65,7 +57,7 @@ private:
 class DnDFile : public wxFileDropTarget
 {
 public:
 class DnDFile : public wxFileDropTarget
 {
 public:

-    DnDFile(wxListBox *pOwner) { m_pOwner = pOwner; }
+    DnDFile(wxListBox *pOwner = NULL) { m_pOwner = pOwner; }

 
     virtual bool OnDropFiles(wxCoord x, wxCoord y,
                              const wxArrayString& filenames);
 
     virtual bool OnDropFiles(wxCoord x, wxCoord y,
                              const wxArrayString& filenames);


@@ -122,7 +114,7 @@ public:
     virtual bool OnInit();
 };
 
     virtual bool OnInit();
 };
 

-IMPLEMENT_APP(DnDApp);
+IMPLEMENT_APP(DnDApp)

 
 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
 
 
 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
 


@@ -163,7 +155,7 @@ private:
     DECLARE_EVENT_TABLE()
 };
 
     DECLARE_EVENT_TABLE()
 };
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 
 // and the same thing fo metafiles
 class DnDCanvasMetafile : public wxScrolledWindow
 
 // and the same thing fo metafiles
 class DnDCanvasMetafile : public wxScrolledWindow


@@ -181,7 +173,7 @@ public:
         Refresh();
     }
 
         Refresh();
     }
 

-    void OnPaint(wxPaintEvent& event)
+    void OnPaint(wxPaintEvent&)

     {
         wxPaintDC dc(this);
 
     {
         wxPaintDC dc(this);
 


@@ -199,7 +191,7 @@ private:
     DECLARE_EVENT_TABLE()
 };
 
     DECLARE_EVENT_TABLE()
 };
 

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 // ----------------------------------------------------------------------------
 // Define a new frame type for the main frame
 
 // ----------------------------------------------------------------------------
 // Define a new frame type for the main frame


@@ -208,7 +200,7 @@ private:
 class DnDFrame : public wxFrame
 {
 public:
 class DnDFrame : public wxFrame
 {
 public:

-    DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h);
+    DnDFrame();

     virtual ~DnDFrame();
 
     void OnPaint(wxPaintEvent& event);
     virtual ~DnDFrame();
 
     void OnPaint(wxPaintEvent& event);


@@ -230,26 +222,37 @@ public:
     void OnCopyBitmap(wxCommandEvent& event);
     void OnPasteBitmap(wxCommandEvent& event);
 
     void OnCopyBitmap(wxCommandEvent& event);
     void OnPasteBitmap(wxCommandEvent& event);
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

     void OnPasteMetafile(wxCommandEvent& event);
     void OnPasteMetafile(wxCommandEvent& event);

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
     void OnCopyFiles(wxCommandEvent& event);
 
 
     void OnCopyFiles(wxCommandEvent& event);
 

+    void OnUsePrimary(wxCommandEvent& event);
+

     void OnLeftDown(wxMouseEvent& event);
     void OnRightDown(wxMouseEvent& event);
 
     void OnLeftDown(wxMouseEvent& event);
     void OnRightDown(wxMouseEvent& event);
 

+#if wxUSE_DRAG_AND_DROP
+    void OnBeginDrag(wxTreeEvent& event);
+#endif // wxUSE_DRAG_AND_DROP
+

     void OnUpdateUIMoveByDefault(wxUpdateUIEvent& event);
 
     void OnUpdateUIPasteText(wxUpdateUIEvent& event);
     void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
 
     void OnUpdateUIMoveByDefault(wxUpdateUIEvent& event);
 
     void OnUpdateUIPasteText(wxUpdateUIEvent& event);
     void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
 

-    DECLARE_EVENT_TABLE()
-

 private:
 private:

+#if wxUSE_DRAG_AND_DROP
+    // show the result of a dnd operation in the status bar
+    void LogDragResult(wxDragResult result);
+#endif // wxUSE_DRAG_AND_DROP
+
+

     // GUI controls
     wxListBox  *m_ctrlFile,
                *m_ctrlText;
     // GUI controls
     wxListBox  *m_ctrlFile,
                *m_ctrlText;

+    wxGenericDirCtrl *m_ctrlDir;

 
 #if wxUSE_LOG
     wxTextCtrl *m_ctrlLog;
 
 #if wxUSE_LOG
     wxTextCtrl *m_ctrlLog;


@@ -265,7 +268,10 @@ private:
     bool m_moveAllow;
 
     // the text we drag
     bool m_moveAllow;
 
     // the text we drag

-    wxString  m_strText;
+    wxString m_strText;
+
+
+    DECLARE_EVENT_TABLE()

 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------


@@ -494,9 +500,9 @@ public:
         // we don't draw the shape to a bitmap until it's really needed (i.e.
         // we're asked to do so)
         m_hasBitmap = false;
         // we don't draw the shape to a bitmap until it's really needed (i.e.
         // we're asked to do so)
         m_hasBitmap = false;

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

         m_hasMetaFile = false;
         m_hasMetaFile = false;

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

     }
 
     virtual ~DnDShapeDataObject() { delete m_shape; }
     }
 
     virtual ~DnDShapeDataObject() { delete m_shape; }


@@ -513,9 +519,9 @@ public:
 
         m_shape = (DnDShape *)NULL;
         m_hasBitmap = false;
 
         m_shape = (DnDShape *)NULL;
         m_hasBitmap = false;

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

         m_hasMetaFile = false;
         m_hasMetaFile = false;

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
         return shape;
     }
 
         return shape;
     }


@@ -537,9 +543,9 @@ public:
             // but the bitmap format(s) are only supported for output
             nFormats += m_dobjBitmap.GetFormatCount(dir);
 
             // but the bitmap format(s) are only supported for output
             nFormats += m_dobjBitmap.GetFormatCount(dir);
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

             nFormats += m_dobjMetaFile.GetFormatCount(dir);
             nFormats += m_dobjMetaFile.GetFormatCount(dir);

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

         }
 
         return nFormats;
         }
 
         return nFormats;


@@ -554,11 +560,11 @@ public:
             // under Windows
             m_dobjBitmap.GetAllFormats(&formats[1], dir);
 
             // under Windows
             m_dobjBitmap.GetAllFormats(&formats[1], dir);
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

             // don't assume that m_dobjBitmap has only 1 format
             m_dobjMetaFile.GetAllFormats(&formats[1 +
                     m_dobjBitmap.GetFormatCount(dir)], dir);
             // don't assume that m_dobjBitmap has only 1 format
             m_dobjMetaFile.GetAllFormats(&formats[1 +
                     m_dobjBitmap.GetFormatCount(dir)], dir);

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

         }
     }
 
         }
     }
 


@@ -568,7 +574,7 @@ public:
         {
             return m_shape->GetDataSize();
         }
         {
             return m_shape->GetDataSize();
         }

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

         else if ( m_dobjMetaFile.IsSupported(format) )
         {
             if ( !m_hasMetaFile )
         else if ( m_dobjMetaFile.IsSupported(format) )
         {
             if ( !m_hasMetaFile )


@@ -576,7 +582,7 @@ public:
 
             return m_dobjMetaFile.GetDataSize(format);
         }
 
             return m_dobjMetaFile.GetDataSize(format);
         }

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

         else
         {
             wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
         else
         {
             wxASSERT_MSG( m_dobjBitmap.IsSupported(format),


@@ -597,7 +603,7 @@ public:
 
             return true;
         }
 
             return true;
         }

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

         else if ( m_dobjMetaFile.IsSupported(format) )
         {
             if ( !m_hasMetaFile )
         else if ( m_dobjMetaFile.IsSupported(format) )
         {
             if ( !m_hasMetaFile )


@@ -605,7 +611,7 @@ public:
 
             return m_dobjMetaFile.GetDataHere(format, pBuf);
         }
 
             return m_dobjMetaFile.GetDataHere(format, pBuf);
         }

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

         else
         {
             wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
         else
         {
             wxASSERT_MSG( m_dobjBitmap.IsSupported(format),


@@ -630,9 +636,9 @@ public:
         // the shape has changed
         m_hasBitmap = false;
 
         // the shape has changed
         m_hasBitmap = false;
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

         m_hasMetaFile = false;
         m_hasMetaFile = false;

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
         return true;
     }
 
         return true;
     }


@@ -640,19 +646,19 @@ public:
 private:
     // creates a bitmap and assigns it to m_dobjBitmap (also sets m_hasBitmap)
     void CreateBitmap() const;
 private:
     // creates a bitmap and assigns it to m_dobjBitmap (also sets m_hasBitmap)
     void CreateBitmap() const;

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

     void CreateMetaFile() const;
     void CreateMetaFile() const;

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
     wxDataFormat        m_formatShape;  // our custom format
 
     wxBitmapDataObject  m_dobjBitmap;   // it handles bitmaps
     bool                m_hasBitmap;    // true if m_dobjBitmap has valid bitmap
 
 
     wxDataFormat        m_formatShape;  // our custom format
 
     wxBitmapDataObject  m_dobjBitmap;   // it handles bitmaps
     bool                m_hasBitmap;    // true if m_dobjBitmap has valid bitmap
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

     wxMetaFileDataObject m_dobjMetaFile;// handles metafiles
     bool                 m_hasMetaFile; // true if we have valid metafile
     wxMetaFileDataObject m_dobjMetaFile;// handles metafiles
     bool                 m_hasMetaFile; // true if we have valid metafile

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
     DnDShape           *m_shape;        // our data
 };
 
     DnDShape           *m_shape;        // our data
 };


@@ -786,9 +792,9 @@ private:
 
 static void ShowBitmap(const wxBitmap& bitmap);
 
 
 static void ShowBitmap(const wxBitmap& bitmap);
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 static void ShowMetaFile(const wxMetaFile& metafile);
 static void ShowMetaFile(const wxMetaFile& metafile);

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 // ----------------------------------------------------------------------------
 // IDs for the menu commands
 
 // ----------------------------------------------------------------------------
 // IDs for the menu commands


@@ -810,6 +816,7 @@ enum
     Menu_PasteBitmap,
     Menu_PasteMFile,
     Menu_CopyFiles,
     Menu_PasteBitmap,
     Menu_PasteMFile,
     Menu_CopyFiles,

+    Menu_UsePrimary,

     Menu_Shape_New = 500,
     Menu_Shape_Edit,
     Menu_Shape_Clear,
     Menu_Shape_New = 500,
     Menu_Shape_Edit,
     Menu_Shape_Clear,


@@ -833,10 +840,11 @@ BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
     EVT_MENU(Menu_Paste,      DnDFrame::OnPaste)
     EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
     EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
     EVT_MENU(Menu_Paste,      DnDFrame::OnPaste)
     EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
     EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

     EVT_MENU(Menu_PasteMFile, DnDFrame::OnPasteMetafile)
     EVT_MENU(Menu_PasteMFile, DnDFrame::OnPasteMetafile)

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

     EVT_MENU(Menu_CopyFiles,  DnDFrame::OnCopyFiles)
     EVT_MENU(Menu_CopyFiles,  DnDFrame::OnCopyFiles)

+    EVT_MENU(Menu_UsePrimary, DnDFrame::OnUsePrimary)

 
     EVT_UPDATE_UI(Menu_DragMoveDef, DnDFrame::OnUpdateUIMoveByDefault)
 
 
     EVT_UPDATE_UI(Menu_DragMoveDef, DnDFrame::OnUpdateUIMoveByDefault)
 


@@ -877,11 +885,11 @@ BEGIN_EVENT_TABLE(DnDCanvasBitmap, wxScrolledWindow)
     EVT_PAINT(DnDCanvasBitmap::OnPaint)
 END_EVENT_TABLE()
 
     EVT_PAINT(DnDCanvasBitmap::OnPaint)
 END_EVENT_TABLE()
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 BEGIN_EVENT_TABLE(DnDCanvasMetafile, wxScrolledWindow)
     EVT_PAINT(DnDCanvasMetafile::OnPaint)
 END_EVENT_TABLE()
 BEGIN_EVENT_TABLE(DnDCanvasMetafile, wxScrolledWindow)
     EVT_PAINT(DnDCanvasMetafile::OnPaint)
 END_EVENT_TABLE()

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 #endif // wxUSE_DRAG_AND_DROP
 
 
 #endif // wxUSE_DRAG_AND_DROP
 


@@ -892,6 +900,9 @@ END_EVENT_TABLE()
 // `Main program' equivalent, creating windows and returning main app frame
 bool DnDApp::OnInit()
 {
 // `Main program' equivalent, creating windows and returning main app frame
 bool DnDApp::OnInit()
 {

+    if ( !wxApp::OnInit() )
+        return false;
+

 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
     // switch on trace messages
 #if wxUSE_LOG
 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
     // switch on trace messages
 #if wxUSE_LOG


@@ -906,19 +917,8 @@ bool DnDApp::OnInit()
     wxImage::AddHandler( new wxPNGHandler );
 #endif
 
     wxImage::AddHandler( new wxPNGHandler );
 #endif
 

-    // under X we usually want to use the primary selection by default (which
-    // is shared with other apps)
-    wxTheClipboard->UsePrimarySelection();
-

     // create the main frame window
     // create the main frame window

-    DnDFrame *frame = new DnDFrame((wxFrame  *) NULL,
-                                   _T("Drag-and-Drop/Clipboard wxWidgets Sample"),
-                                   10, 100, 650, 340);
-
-    // activate it
-    frame->Show(true);
-
-    SetTopWindow(frame);
+    new DnDFrame();

 
     return true;
 #else
 
     return true;
 #else


@@ -929,8 +929,9 @@ bool DnDApp::OnInit()
 
 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
 
 
 #if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
 

-DnDFrame::DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h)
-        : wxFrame(frame, wxID_ANY, title, wxPoint(x, y), wxSize(w, h)),
+DnDFrame::DnDFrame()
+        : wxFrame(NULL, wxID_ANY, _T("Drag-and-Drop/Clipboard wxWidgets Sample"),
+                  wxPoint(10, 100)),

           m_strText(_T("wxWidgets drag & drop works :-)"))
 
 {
           m_strText(_T("wxWidgets drag & drop works :-)"))
 
 {


@@ -967,12 +968,14 @@ DnDFrame::DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h)
     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_CopyBitmap, _T("Copy &bitmap\tCtrl-Shift-C"));
     clip_menu->Append(Menu_PasteBitmap, _T("Paste b&itmap\tCtrl-Shift-V"));
     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_CopyBitmap, _T("Copy &bitmap\tCtrl-Shift-C"));
     clip_menu->Append(Menu_PasteBitmap, _T("Paste b&itmap\tCtrl-Shift-V"));

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_PasteMFile, _T("Paste &metafile\tCtrl-M"));
     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_PasteMFile, _T("Paste &metafile\tCtrl-M"));

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_CopyFiles, _T("Copy &files\tCtrl-F"));
     clip_menu->AppendSeparator();
     clip_menu->Append(Menu_CopyFiles, _T("Copy &files\tCtrl-F"));

+    clip_menu->AppendSeparator();
+    clip_menu->AppendCheckItem(Menu_UsePrimary, _T("Use &primary selection\tCtrl-P"));

 
     wxMenuBar *menu_bar = new wxMenuBar;
     menu_bar->Append(file_menu, _T("&File"));
 
     wxMenuBar *menu_bar = new wxMenuBar;
     menu_bar->Append(file_menu, _T("&File"));


@@ -984,16 +987,20 @@ DnDFrame::DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h)
 
     SetMenuBar(menu_bar);
 
 
     SetMenuBar(menu_bar);
 

-    // make a panel with 3 subwindows
+    // create the child controls
+    SetBackgroundColour(*wxWHITE); // labels read better on this background
+

     wxString strFile(_T("Drop files here!")), strText(_T("Drop text on me"));
 
     m_ctrlFile  = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strFile,
                                 wxLB_HSCROLL | wxLB_ALWAYS_SB );
     m_ctrlText  = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strText,
                                 wxLB_HSCROLL | wxLB_ALWAYS_SB );
     wxString strFile(_T("Drop files here!")), strText(_T("Drop text on me"));
 
     m_ctrlFile  = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strFile,
                                 wxLB_HSCROLL | wxLB_ALWAYS_SB );
     m_ctrlText  = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strText,
                                 wxLB_HSCROLL | wxLB_ALWAYS_SB );

+    m_ctrlDir   = new wxGenericDirCtrl(this);

 
 #if wxUSE_LOG
 
 #if wxUSE_LOG

-    m_ctrlLog   = new wxTextCtrl(this, wxID_ANY, _T(""), wxDefaultPosition, wxDefaultSize,
+    m_ctrlLog   = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
+                                 wxDefaultPosition, wxDefaultSize,

                                  wxTE_MULTILINE | wxTE_READONLY |
                                  wxSUNKEN_BORDER );
 
                                  wxTE_MULTILINE | wxTE_READONLY |
                                  wxSUNKEN_BORDER );
 


@@ -1006,6 +1013,18 @@ DnDFrame::DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h)
     // associate drop targets with the controls
     m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
     m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
     // associate drop targets with the controls
     m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
     m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));

+
+#if wxUSE_DRAG_AND_DROP
+    m_ctrlDir->Connect
+    (
+        wxID_ANY,
+        wxEVT_COMMAND_TREE_BEGIN_DRAG,
+        wxTreeEventHandler(DnDFrame::OnBeginDrag),
+        NULL,
+        this
+    );
+#endif // wxUSE_DRAG_AND_DROP
+

 #if wxUSE_LOG
     m_ctrlLog->SetDropTarget(new URLDropTarget);
 #endif // wxUSE_LOG
 #if wxUSE_LOG
     m_ctrlLog->SetDropTarget(new URLDropTarget);
 #endif // wxUSE_LOG


@@ -1015,21 +1034,32 @@ DnDFrame::DnDFrame(wxFrame *frame, wxChar *title, int x, int y, int w, int h)
     sizer_top->Add(m_ctrlFile, 1, wxEXPAND );
     sizer_top->Add(m_ctrlText, 1, wxEXPAND );
 
     sizer_top->Add(m_ctrlFile, 1, wxEXPAND );
     sizer_top->Add(m_ctrlText, 1, wxEXPAND );
 

+    wxBoxSizer *sizerDirCtrl = new wxBoxSizer(wxVERTICAL);
+    sizerDirCtrl->Add(new wxStaticText(this, wxID_ANY, "Drag files from here"),
+                      wxSizerFlags().Centre().Border());
+    sizerDirCtrl->Add(m_ctrlDir, wxSizerFlags(1).Expand());
+    sizer_top->Add(sizerDirCtrl, 1, wxEXPAND );
+
+    // make all columns of reasonable minimal size
+    for ( unsigned n = 0; n < sizer_top->GetChildren().size(); n++ )
+        sizer_top->SetItemMinSize(n, 200, 300);
+

     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
     sizer->Add(sizer_top, 1, wxEXPAND );
 #if wxUSE_LOG
     sizer->Add(m_ctrlLog, 2, wxEXPAND);
     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
     sizer->Add(sizer_top, 1, wxEXPAND );
 #if wxUSE_LOG
     sizer->Add(m_ctrlLog, 2, wxEXPAND);

-    sizer->SetItemMinSize(m_ctrlLog, 450, 0);
+    sizer->SetItemMinSize(m_ctrlLog, 450, 200);

 #endif // wxUSE_LOG
     sizer->AddSpacer(50);
 
 #endif // wxUSE_LOG
     sizer->AddSpacer(50);
 

-    SetSizer(sizer);
-    sizer->SetSizeHints( this );
-

     // copy data by default but allow moving it as well
     m_moveByDefault = false;
     m_moveAllow = true;
     menu_bar->Check(Menu_DragMoveAllow, true);
     // copy data by default but allow moving it as well
     m_moveByDefault = false;
     m_moveAllow = true;
     menu_bar->Check(Menu_DragMoveAllow, true);

+
+    // set the correct size and show the frame
+    SetSizerAndFit(sizer);
+    Show();

 }
 
 void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 }
 
 void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))


@@ -1166,18 +1196,37 @@ void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
 }
 #endif // wxUSE_LOG
 
 }
 #endif // wxUSE_LOG
 

+#if wxUSE_DRAG_AND_DROP
+
+void DnDFrame::LogDragResult(wxDragResult result)
+{
+#if wxUSE_STATUSBAR
+    const wxChar *pc;
+    switch ( result )
+    {
+        case wxDragError:   pc = _T("Error!");    break;
+        case wxDragNone:    pc = _T("Nothing");   break;
+        case wxDragCopy:    pc = _T("Copied");    break;
+        case wxDragMove:    pc = _T("Moved");     break;
+        case wxDragCancel:  pc = _T("Cancelled"); break;
+        default:            pc = _T("Huh?");      break;
+    }
+
+    SetStatusText(wxString(_T("Drag result: ")) + pc);
+#else
+    wxUnusedVar(result);
+#endif // wxUSE_STATUSBAR
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+

 void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
 {
 #if wxUSE_DRAG_AND_DROP
 void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
 {
 #if wxUSE_DRAG_AND_DROP

-    if ( !m_strText.IsEmpty() )
+    if ( !m_strText.empty() )

     {
         // start drag operation
         wxTextDataObject textData(m_strText);
     {
         // start drag operation
         wxTextDataObject textData(m_strText);

-/*
-        wxFileDataObject textData;
-        textData.AddFile( "/file1.txt" );
-        textData.AddFile( "/file2.txt" );
-*/

         wxDropSource source(textData, this,
                             wxDROP_ICON(dnd_copy),
                             wxDROP_ICON(dnd_move),
         wxDropSource source(textData, this,
                             wxDROP_ICON(dnd_copy),
                             wxDROP_ICON(dnd_move),


@@ -1189,24 +1238,7 @@ void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
         else if ( m_moveAllow )
             flags |= wxDrag_AllowMove;
 
         else if ( m_moveAllow )
             flags |= wxDrag_AllowMove;
 

-        wxDragResult result = source.DoDragDrop(flags);
-
-#if wxUSE_STATUSBAR
-        const wxChar *pc;
-        switch ( result )
-        {
-            case wxDragError:   pc = _T("Error!");    break;
-            case wxDragNone:    pc = _T("Nothing");   break;
-            case wxDragCopy:    pc = _T("Copied");    break;
-            case wxDragMove:    pc = _T("Moved");     break;
-            case wxDragCancel:  pc = _T("Cancelled"); break;
-            default:            pc = _T("Huh?");      break;
-        }
-
-        SetStatusText(wxString(_T("Drag result: ")) + pc);
-#else
-        wxUnusedVar(result);
-#endif // wxUSE_STATUSBAR
+        LogDragResult(source.DoDragDrop(flags));

     }
 #endif // wxUSE_DRAG_AND_DROP
 }
     }
 #endif // wxUSE_DRAG_AND_DROP
 }


@@ -1232,6 +1264,30 @@ DnDFrame::~DnDFrame()
 #endif // wxUSE_LOG
 }
 
 #endif // wxUSE_LOG
 }
 

+void DnDFrame::OnUsePrimary(wxCommandEvent& event)
+{
+    const bool usePrimary = event.IsChecked();
+    wxTheClipboard->UsePrimarySelection(usePrimary);
+
+    wxLogStatus(_T("Now using %s selection"), usePrimary ? _T("primary")
+                                                         : _T("clipboard"));
+}
+
+#if wxUSE_DRAG_AND_DROP
+
+void DnDFrame::OnBeginDrag(wxTreeEvent& WXUNUSED(event))
+{
+    wxFileDataObject data;
+    data.AddFile(m_ctrlDir->GetPath());
+
+    wxDropSource dragSource(this);
+    dragSource.SetData(data);
+
+    LogDragResult(dragSource.DoDragDrop());
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+

 // ---------------------------------------------------------------------------
 // bitmap clipboard
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // bitmap clipboard
 // ---------------------------------------------------------------------------


@@ -1240,9 +1296,9 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
 {
     // PNG support is not always compiled in under Windows, so use BMP there
 #if wxUSE_LIBPNG
 {
     // PNG support is not always compiled in under Windows, so use BMP there
 #if wxUSE_LIBPNG

-    wxFileDialog dialog(this, _T("Open a PNG file"), _T(""), _T(""), _T("PNG files (*.png)|*.png"), 0);
+    wxFileDialog dialog(this, _T("Open a PNG file"), wxEmptyString, wxEmptyString, _T("PNG files (*.png)|*.png"), 0);

 #else
 #else

-    wxFileDialog dialog(this, _T("Open a BMP file"), _T(""), _T(""), _T("BMP files (*.bmp)|*.bmp"), 0);
+    wxFileDialog dialog(this, _T("Open a BMP file"), wxEmptyString, wxEmptyString, _T("BMP files (*.bmp)|*.bmp"), 0);

 #endif
 
     if (dialog.ShowModal() != wxID_OK)
 #endif
 
     if (dialog.ShowModal() != wxID_OK)


@@ -1251,7 +1307,7 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
         return;
     }
 
         return;
     }
 

-    if (dialog.GetPath().IsEmpty())
+    if (dialog.GetPath().empty())

     {
         wxLogMessage( _T("Returned empty string.") );
         return;
     {
         wxLogMessage( _T("Returned empty string.") );
         return;


@@ -1339,7 +1395,7 @@ void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event))
     wxTheClipboard->Close();
 }
 
     wxTheClipboard->Close();
 }
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 
 void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
 {
 
 void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
 {


@@ -1375,7 +1431,7 @@ void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
     wxTheClipboard->Close();
 }
 
     wxTheClipboard->Close();
 }
 

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 // ----------------------------------------------------------------------------
 // file clipboard
 
 // ----------------------------------------------------------------------------
 // file clipboard


@@ -1384,7 +1440,7 @@ void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
 void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
 {
 #ifdef __WXMSW__
 void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
 {
 #ifdef __WXMSW__

-    wxFileDialog dialog(this, _T("Select a file to copy"), _T(""), _T(""),
+    wxFileDialog dialog(this, _T("Select a file to copy"), wxEmptyString, wxEmptyString,

                          _T("All files (*.*)|*.*"), 0);
 
     wxArrayString filenames;
                          _T("All files (*.*)|*.*"), 0);
 
     wxArrayString filenames;


@@ -1416,7 +1472,7 @@ void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
             else
             {
                 wxLogStatus(this, wxT("%d file%s copied to the clipboard"),
             else
             {
                 wxLogStatus(this, wxT("%d file%s copied to the clipboard"),

-                            count, count == 1 ? wxT("") : wxT("s"));
+                            count, count == 1 ? wxEmptyString : wxEmptyString);

             }
         }
     }
             }
         }
     }


@@ -1503,9 +1559,12 @@ bool DnDFile::OnDropFiles(wxCoord, wxCoord, const wxArrayString& filenames)
     size_t nFiles = filenames.GetCount();
     wxString str;
     str.Printf( _T("%d files dropped"), (int)nFiles);
     size_t nFiles = filenames.GetCount();
     wxString str;
     str.Printf( _T("%d files dropped"), (int)nFiles);

-    m_pOwner->Append(str);
-    for ( size_t n = 0; n < nFiles; n++ ) {
-        m_pOwner->Append(filenames[n]);
+
+    if (m_pOwner != NULL)
+    {
+        m_pOwner->Append(str);
+        for ( size_t n = 0; n < nFiles; n++ )
+            m_pOwner->Append(filenames[n]);

     }
 
     return true;
     }
 
     return true;


@@ -1518,7 +1577,7 @@ bool DnDFile::OnDropFiles(wxCoord, wxCoord, const wxArrayString& filenames)
 DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
   :wxDialog( parent, 6001, wxT("Choose Shape"), wxPoint( 10, 10 ),
              wxSize( 40, 40 ),
 DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
   :wxDialog( parent, 6001, wxT("Choose Shape"), wxPoint( 10, 10 ),
              wxSize( 40, 40 ),

-             wxRAISED_BORDER|wxCAPTION|wxTHICK_FRAME|wxSYSTEM_MENU )
+             wxDEFAULT_DIALOG_STYLE | wxRAISED_BORDER | wxRESIZE_BORDER )

 {
     m_shape = shape;
     wxBoxSizer* topSizer = new wxBoxSizer( wxVERTICAL );
 {
     m_shape = shape;
     wxBoxSizer* topSizer = new wxBoxSizer( wxVERTICAL );


@@ -1579,8 +1638,7 @@ DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
     buttonSizer->Add( bt, 0, wxALL, 2 );
     topSizer->Add( buttonSizer, 0, wxALL|wxALIGN_RIGHT, 2 );
 
     buttonSizer->Add( bt, 0, wxALL, 2 );
     topSizer->Add( buttonSizer, 0, wxALL|wxALIGN_RIGHT, 2 );
 

-    SetSizer( topSizer );
-    topSizer->Fit( this );
+    SetSizerAndFit( topSizer );

 }
 
 DnDShape *DnDShapeDialog::GetShape() const
 }
 
 DnDShape *DnDShapeDialog::GetShape() const


@@ -1909,7 +1967,7 @@ DnDShape *DnDShape::New(const void *buf)
 // DnDShapeDataObject
 // ----------------------------------------------------------------------------
 
 // DnDShapeDataObject
 // ----------------------------------------------------------------------------
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 
 void DnDShapeDataObject::CreateMetaFile() const
 {
 
 void DnDShapeDataObject::CreateMetaFile() const
 {


@@ -1929,7 +1987,7 @@ void DnDShapeDataObject::CreateMetaFile() const
     delete mf;
 }
 
     delete mf;
 }
 

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 void DnDShapeDataObject::CreateBitmap() const
 {
 
 void DnDShapeDataObject::CreateBitmap() const
 {


@@ -1975,7 +2033,7 @@ static void ShowBitmap(const wxBitmap& bitmap)
     frame->Show(true);
 }
 
     frame->Show(true);
 }
 

-#if wxUSE_METAFILES
+#if wxUSE_METAFILE

 
 static void ShowMetaFile(const wxMetaFile& metafile)
 {
 
 static void ShowMetaFile(const wxMetaFile& metafile)
 {


@@ -1992,6 +2050,6 @@ static void ShowMetaFile(const wxMetaFile& metafile)
     frame->Show();
 }
 
     frame->Show();
 }
 

-#endif // wxUSE_METAFILES
+#endif // wxUSE_METAFILE

 
 #endif // wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
 
 #endif // wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD