X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8e124873c5bd39ba8e9cc3c05ac7e4c97fbe59cd..015e69f36dfbc469eef59456f973d0567e865d70:/samples/typetest/typetest.cpp

diff --git a/samples/typetest/typetest.cpp b/samples/typetest/typetest.cpp
index ed81e14691..26cf4051df 100644
--- a/samples/typetest/typetest.cpp
+++ b/samples/typetest/typetest.cpp
@@ -46,6 +46,7 @@
 #include "wx/wfstream.h"
 #include "wx/datstrm.h"
 #include "wx/txtstrm.h"
+#include "wx/mstream.h"
 
 // Create a new application object
 IMPLEMENT_APP    (MyApp)
@@ -61,6 +62,10 @@ BEGIN_EVENT_TABLE(MyApp, wxApp)
     EVT_MENU(TYPES_UNICODE,   MyApp::DoUnicodeDemo)
 #endif
     EVT_MENU(TYPES_STREAM, MyApp::DoStreamDemo)
+    EVT_MENU(TYPES_STREAM2, MyApp::DoStreamDemo2)
+    EVT_MENU(TYPES_STREAM3, MyApp::DoStreamDemo3)
+    EVT_MENU(TYPES_STREAM4, MyApp::DoStreamDemo4)
+    EVT_MENU(TYPES_STREAM5, MyApp::DoStreamDemo5)
     EVT_MENU(TYPES_MIME, MyApp::DoMIMEDemo)
 END_EVENT_TABLE()
 
@@ -89,6 +94,10 @@ bool MyApp::OnInit()
     test_menu->Append(TYPES_UNICODE, "&Unicode test");
 #endif
     test_menu->Append(TYPES_STREAM, "&Stream test");
+    test_menu->Append(TYPES_STREAM2, "&Stream seek test");
+    test_menu->Append(TYPES_STREAM3, "&Stream error test");
+    test_menu->Append(TYPES_STREAM4, "&Stream buffer test");
+    test_menu->Append(TYPES_STREAM5, "&Stream peek test");
     test_menu->AppendSeparator();
     test_menu->Append(TYPES_MIME, "&MIME database test");
 
@@ -117,7 +126,7 @@ void MyApp::DoStreamDemo(wxCommandEvent& WXUNUSED(event))
     textCtrl.WriteText( "Writing to ofstream and wxFileOutputStream:\n" );
 
     ofstream std_file_output( "test_std.dat" );
-    wxFileOutputStream file_output( "test_wx.dat" );
+    wxFileOutputStream file_output( wxString("test_wx.dat") );
     wxBufferedOutputStream buf_output( file_output );
     wxTextOutputStream text_output( buf_output );
 
@@ -151,7 +160,7 @@ void MyApp::DoStreamDemo(wxCommandEvent& WXUNUSED(event))
     textCtrl.WriteText( tmp );
     text_output << str << "\n";
     std_file_output << str.c_str() << "\n";
-
+    
     textCtrl.WriteText( "\nReading from ifstream:\n" );
 
     ifstream std_file_input( "test_std.dat" );
@@ -172,17 +181,21 @@ void MyApp::DoStreamDemo(wxCommandEvent& WXUNUSED(event))
     tmp.Printf( _T("Float: %f\n"), f );
     textCtrl.WriteText( tmp );
 
-    std_file_input >> str;
-    tmp.Printf( _T("String: %s\n"), str.c_str() );
+    // Why doesn't this work?
+#if 0
+    char std_buf[200];
+    std_file_input >> std_buf;
+    tmp.Printf( _T("String: %s\n"), std_buf );
     textCtrl.WriteText( tmp );
+#endif
 
     textCtrl.WriteText( "\nReading from wxFileInputStream:\n" );
 
     buf_output.Sync();
 
-    wxFileInputStream file_input( "test_wx.dat" );
+    wxFileInputStream file_input( wxString("test_wx.dat") );
     wxBufferedInputStream buf_input( file_input );
-    wxTextInputStream text_input( buf_input );
+    wxTextInputStream text_input( file_input );
 
     text_input >> si;
     tmp.Printf( _T("Signed int: %d\n"), si );
@@ -205,6 +218,7 @@ void MyApp::DoStreamDemo(wxCommandEvent& WXUNUSED(event))
     textCtrl.WriteText( tmp );
 
 
+
     textCtrl << "\nTest for wxDataStream:\n\n";
 
     textCtrl.WriteText( "Writing to wxDataOutputStream:\n" );
@@ -256,6 +270,453 @@ void MyApp::DoStreamDemo(wxCommandEvent& WXUNUSED(event))
     textCtrl.WriteText( tmp );
 }
 
+void MyApp::DoStreamDemo2(wxCommandEvent& WXUNUSED(event))
+{
+    wxTextCtrl& textCtrl = * GetTextCtrl();
+
+    textCtrl.Clear();
+    textCtrl << _T("\nTesting wxBufferedStream:\n\n");
+
+    char ch,ch2;
+
+    textCtrl.WriteText( "Writing number 0 to 9 to buffered wxFileOutputStream:\n\n" );
+
+    wxFileOutputStream file_output( wxString("test_wx.dat") );
+    wxBufferedOutputStream buf_output( file_output );
+    for (ch = 0; ch < 10; ch++)
+        buf_output.Write( &ch, 1 );
+    buf_output.Sync();
+    
+    wxFileInputStream file_input( wxString("test_wx.dat") );
+    for (ch2 = 0; ch2 < 10; ch2++)
+    {
+        file_input.Read( &ch, 1 );
+        textCtrl.WriteText( (char)(ch + '0') );
+    }
+    textCtrl.WriteText( "\n\n\n" );
+    
+    textCtrl.WriteText( "Writing number 0 to 9 to buffered wxFileOutputStream, then\n" );
+    textCtrl.WriteText( "seeking back to #3 and writing 3:\n\n" );
+
+    wxFileOutputStream file_output2( wxString("test_wx2.dat") );
+    wxBufferedOutputStream buf_output2( file_output2 );
+    for (ch = 0; ch < 10; ch++)
+        buf_output2.Write( &ch, 1 );
+    buf_output2.SeekO( 3 );
+    ch = 3;
+    buf_output2.Write( &ch, 1 );
+    buf_output2.Sync();
+    
+    wxFileInputStream file_input2( wxString("test_wx2.dat") );
+    for (ch2 = 0; ch2 < 10; ch2++)
+    {
+        file_input2.Read( &ch, 1 );
+        textCtrl.WriteText( (char)(ch + '0') );
+    }
+    textCtrl.WriteText( "\n\n\n" );
+    
+    // now append 2000 bytes to file (bigger than buffer)
+    buf_output2.SeekO( 0, wxFromEnd );
+    ch = 1;
+    for (int i = 0; i < 2000; i++)
+       buf_output2.Write( &ch, 1 );
+    buf_output2.Sync();
+    
+    textCtrl.WriteText( "Reading number 0 to 9 from buffered wxFileInputStream, then\n" );
+    textCtrl.WriteText( "seeking back to #3 and reading 3:\n\n" );
+
+    wxFileInputStream file_input3( wxString("test_wx2.dat") );
+    wxBufferedInputStream buf_input3( file_input3 );
+    for (ch2 = 0; ch2 < 10; ch2++)
+    {
+        buf_input3.Read( &ch, 1 );
+        textCtrl.WriteText( (char)(ch + '0') );
+    }
+    for (int j = 0; j < 2000; j++)
+       buf_input3.Read( &ch, 1 );
+    textCtrl.WriteText( "\n" );
+    buf_input3.SeekI( 3 );
+    buf_input3.Read( &ch, 1 );
+    textCtrl.WriteText( (char)(ch + '0') );
+    textCtrl.WriteText( "\n\n\n" );
+    
+}
+
+void MyApp::DoStreamDemo3(wxCommandEvent& WXUNUSED(event))
+{
+    wxTextCtrl& textCtrl = * GetTextCtrl();
+
+    textCtrl.Clear();
+    textCtrl << "\nTesting wxFileInputStream's and wxFFileInputStream's error handling:\n\n";
+
+    char ch,ch2;
+
+    textCtrl.WriteText( "Writing number 0 to 9 to wxFileOutputStream:\n\n" );
+
+    wxFileOutputStream file_output( wxString("test_wx.dat") );
+    for (ch = 0; ch < 10; ch++)
+        file_output.Write( &ch, 1 );
+
+    // Testing wxFileInputStream
+    
+    textCtrl.WriteText( "Reading 0 to 10 to wxFileInputStream:\n\n" );
+
+    wxFileInputStream file_input( wxString("test_wx.dat") );
+    for (ch2 = 0; ch2 < 11; ch2++)
+    {
+        file_input.Read( &ch, 1 );
+        textCtrl.WriteText( "Value read: " );
+        textCtrl.WriteText( (char)(ch + '0') );
+        textCtrl.WriteText( ";  stream.LastError() returns: " );
+        switch (file_input.LastError())
+        {
+            case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+            case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+            case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+            case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+            default: textCtrl.WriteText( "Huh?\n" ); break;
+        }
+    }
+    textCtrl.WriteText( "\n" );
+    
+    textCtrl.WriteText( "Seeking to 0;  stream.LastError() returns: " );
+    file_input.SeekI( 0 );
+    switch (file_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    textCtrl.WriteText( "\n" );
+    
+    file_input.Read( &ch, 1 );
+    textCtrl.WriteText( "Value read: " );
+    textCtrl.WriteText( (char)(ch + '0') );
+    textCtrl.WriteText( ";  stream.LastError() returns: " );
+    switch (file_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    textCtrl.WriteText( "\n\n" );
+
+    
+    // Testing wxFFileInputStream
+    
+    textCtrl.WriteText( "Reading 0 to 10 to wxFFileInputStream:\n\n" );
+
+    wxFFileInputStream ffile_input( wxString("test_wx.dat") );
+    for (ch2 = 0; ch2 < 11; ch2++)
+    {
+        ffile_input.Read( &ch, 1 );
+        textCtrl.WriteText( "Value read: " );
+        textCtrl.WriteText( (char)(ch + '0') );
+        textCtrl.WriteText( ";  stream.LastError() returns: " );
+        switch (ffile_input.LastError())
+        {
+            case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+            case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+            case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+            case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+            default: textCtrl.WriteText( "Huh?\n" ); break;
+	    }
+    }
+    textCtrl.WriteText( "\n" );
+    
+    textCtrl.WriteText( "Seeking to 0;  stream.LastError() returns: " );
+    ffile_input.SeekI( 0 );
+    switch (ffile_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    textCtrl.WriteText( "\n" );
+    
+    ffile_input.Read( &ch, 1 );
+    textCtrl.WriteText( "Value read: " );
+    textCtrl.WriteText( (char)(ch + '0') );
+    textCtrl.WriteText( ";  stream.LastError() returns: " );
+    switch (ffile_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    textCtrl.WriteText( "\n\n" );
+
+    // Testing wxFFileInputStream
+    
+    textCtrl.WriteText( "Reading 0 to 10 to buffered wxFFileInputStream:\n\n" );
+
+    wxFFileInputStream ffile_input2( wxString("test_wx.dat") );
+    wxBufferedInputStream buf_input( ffile_input2 );
+    for (ch2 = 0; ch2 < 11; ch2++)
+    {
+        buf_input.Read( &ch, 1 );
+        textCtrl.WriteText( "Value read: " );
+        textCtrl.WriteText( (char)(ch + '0') );
+        textCtrl.WriteText( ";  stream.LastError() returns: " );
+        switch (buf_input.LastError())
+        {
+            case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+            case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+            case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+            case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+            default: textCtrl.WriteText( "Huh?\n" ); break;
+        }
+    }
+    textCtrl.WriteText( "\n" );
+    
+    textCtrl.WriteText( "Seeking to 0;  stream.LastError() returns: " );
+    buf_input.SeekI( 0 );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    textCtrl.WriteText( "\n" );
+    
+    buf_input.Read( &ch, 1 );
+    textCtrl.WriteText( "Value read: " );
+    textCtrl.WriteText( (char)(ch + '0') );
+    textCtrl.WriteText( ";  stream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+}
+
+void MyApp::DoStreamDemo4(wxCommandEvent& WXUNUSED(event))
+{
+    wxTextCtrl& textCtrl = * GetTextCtrl();
+
+    wxString msg;
+    
+    textCtrl.Clear();
+    textCtrl << "\nTesting wxStreamBuffer:\n\n";
+
+    // bigger than buffer
+    textCtrl.WriteText( "Writing 2000x 1 to wxFileOutputStream.\n\n" );
+
+    wxFileOutputStream file_output( wxString("test_wx.dat") );
+    for (int i = 0; i < 2000; i++)
+    {
+        char ch = 1;
+        file_output.Write( &ch, 1 );
+    }
+
+    textCtrl.WriteText( "Opening with a buffered wxFileInputStream:\n\n" );
+
+    wxFileInputStream file_input( wxString("test_wx.dat") );
+    wxBufferedInputStream buf_input( file_input );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+    
+
+    textCtrl.WriteText( "Seeking to position 300:\n\n" );
+
+    buf_input.SeekI( 300 );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+    
+
+    char buf[2000];
+
+    textCtrl.WriteText( "Reading 500 bytes:\n\n" );
+
+    buf_input.Read( buf, 500 );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+    
+    textCtrl.WriteText( "Reading another 500 bytes:\n\n" );
+
+    buf_input.Read( buf, 500 );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+
+    textCtrl.WriteText( "Reading another 500 bytes:\n\n" );
+
+    buf_input.Read( buf, 500 );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+
+    textCtrl.WriteText( "Reading another 500 bytes:\n\n" );
+
+    buf_input.Read( buf, 500 );
+    
+    textCtrl.WriteText( "wxBufferedInputStream.LastError() returns: " );
+    switch (buf_input.LastError())
+    {
+        case wxSTREAM_NOERROR:      textCtrl.WriteText( "wxSTREAM_NOERROR\n" ); break;
+        case wxSTREAM_EOF:          textCtrl.WriteText( "wxSTREAM_EOF\n" ); break;
+        case wxSTREAM_READ_ERROR:   textCtrl.WriteText( "wxSTREAM_READ_ERROR\n" ); break;
+        case wxSTREAM_WRITE_ERROR:  textCtrl.WriteText( "wxSTREAM_WRITE_ERROR\n" ); break;
+        default: textCtrl.WriteText( "Huh?\n" ); break;
+    }
+    msg.Printf( "wxBufferedInputStream.LastRead() returns: %d\n", (int)buf_input.LastRead() );
+    textCtrl.WriteText( msg );
+    msg.Printf( "wxBufferedInputStream.TellI() returns: %d\n", (int)buf_input.TellI() );
+    textCtrl.WriteText( msg );
+    textCtrl.WriteText( "\n\n" );
+}
+
+void MyApp::DoStreamDemo5(wxCommandEvent& WXUNUSED(event))
+{
+    wxTextCtrl& textCtrl = * GetTextCtrl();
+
+    textCtrl.Clear();
+    textCtrl << "\nTesting wxFileInputStream's Peek():\n\n";
+
+    char ch;
+    wxString str;
+
+    textCtrl.WriteText( "Writing number 0 to 9 to wxFileOutputStream:\n\n" );
+
+    wxFileOutputStream file_output( wxString("test_wx.dat") );
+    for (ch = 0; ch < 10; ch++)
+        file_output.Write( &ch, 1 );
+        
+    file_output.Sync();
+    
+    wxFileInputStream file_input( wxString("test_wx.dat") );
+    
+    ch = file_input.Peek();
+    str.Printf( "First char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = file_input.GetC();
+    str.Printf( "First char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = file_input.Peek();
+    str.Printf( "Second char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = file_input.GetC();
+    str.Printf( "Second char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = file_input.Peek();
+    str.Printf( "Third char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = file_input.GetC();
+    str.Printf( "Third char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    
+    textCtrl << "\n\n\nTesting wxMemoryInputStream's Peek():\n\n";
+    
+    char buf[] = { 0,1,2,3,4,5,6,7,8,9,10 };
+    wxMemoryInputStream input( buf, 10 );
+    
+    ch = input.Peek();
+    str.Printf( "First char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = input.GetC();
+    str.Printf( "First char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = input.Peek();
+    str.Printf( "Second char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = input.GetC();
+    str.Printf( "Second char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = input.Peek();
+    str.Printf( "Third char peeked: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+    
+    ch = input.GetC();
+    str.Printf( "Third char read: %d\n", (int) ch );
+    textCtrl.WriteText( str );
+}
+
 #if wxUSE_UNICODE
 void MyApp::DoUnicodeDemo(wxCommandEvent& WXUNUSED(event))
 {