+ textCtrl.WriteText( (wxChar)(ch + wxT('0')) );
+ textCtrl.WriteText( wxT("\n\n\n") );
+
+}
+
+void MyApp::DoStreamDemo3(wxCommandEvent& WXUNUSED(event))
+{
+ wxTextCtrl& textCtrl = * GetTextCtrl();
+
+ textCtrl.Clear();
+ textCtrl << wxT("\nTesting wxFileInputStream's and wxFFileInputStream's error handling:\n\n");
+
+ char ch,ch2;
+
+ textCtrl.WriteText( wxT("Writing number 0 to 9 to wxFileOutputStream:\n\n") );
+
+ wxFileOutputStream file_output( file_name );
+ for (ch = 0; ch < 10; ch++)
+ file_output.Write( &ch, 1 );
+
+ // Testing wxFileInputStream
+
+ textCtrl.WriteText( wxT("Reading 0 to 10 to wxFileInputStream:\n\n") );
+
+ wxFileInputStream file_input( file_name );
+ for (ch2 = 0; ch2 < 11; ch2++)
+ {
+ file_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + '0') );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (file_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ textCtrl.WriteText( wxT("Seeking to 0; stream.GetLastError() returns: ") );
+ file_input.SeekI( 0 );
+ switch (file_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ file_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + wxT('0')) );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (file_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ textCtrl.WriteText( wxT("\n\n") );
+
+
+ // Testing wxFFileInputStream
+
+ textCtrl.WriteText( wxT("Reading 0 to 10 to wxFFileInputStream:\n\n") );
+
+ wxFFileInputStream ffile_input( file_name );
+ for (ch2 = 0; ch2 < 11; ch2++)
+ {
+ ffile_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + '0') );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (ffile_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ textCtrl.WriteText( wxT("Seeking to 0; stream.GetLastError() returns: ") );
+ ffile_input.SeekI( 0 );
+ switch (ffile_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ ffile_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + '0') );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (ffile_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ textCtrl.WriteText( wxT("\n\n") );
+
+ // Testing wxFFileInputStream
+
+ textCtrl.WriteText( wxT("Reading 0 to 10 to buffered wxFFileInputStream:\n\n") );
+
+ wxFFileInputStream ffile_input2( file_name );
+ wxBufferedInputStream buf_input( ffile_input2 );
+ for (ch2 = 0; ch2 < 11; ch2++)
+ {
+ buf_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + '0') );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ textCtrl.WriteText( wxT("Seeking to 0; stream.GetLastError() returns: ") );
+ buf_input.SeekI( 0 );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ textCtrl.WriteText( wxT("\n") );
+
+ buf_input.Read( &ch, 1 );
+ textCtrl.WriteText( wxT("Value read: ") );
+ textCtrl.WriteText( (wxChar)(ch + '0') );
+ textCtrl.WriteText( wxT("; stream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+}
+
+void MyApp::DoStreamDemo4(wxCommandEvent& WXUNUSED(event))
+{
+ wxTextCtrl& textCtrl = * GetTextCtrl();
+
+ wxString msg;
+
+ textCtrl.Clear();
+ textCtrl << wxT("\nTesting wxStreamBuffer:\n\n");
+
+ // bigger than buffer
+ textCtrl.WriteText( wxT("Writing 2000x 1 to wxFileOutputStream.\n\n") );
+
+ wxFileOutputStream file_output( file_name );
+ for (int i = 0; i < 2000; i++)
+ {
+ char ch = 1;
+ file_output.Write( &ch, 1 );
+ }
+
+ textCtrl.WriteText( wxT("Opening with a buffered wxFileInputStream:\n\n") );
+
+ wxFileInputStream file_input( file_name );
+ wxBufferedInputStream buf_input( file_input );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+
+
+ textCtrl.WriteText( wxT("Seeking to position 300:\n\n") );
+
+ buf_input.SeekI( 300 );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+
+
+ char buf[2000];
+
+ textCtrl.WriteText( wxT("Reading 500 bytes:\n\n") );
+
+ buf_input.Read( buf, 500 );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+
+ textCtrl.WriteText( wxT("Reading another 500 bytes:\n\n") );
+
+ buf_input.Read( buf, 500 );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+
+ textCtrl.WriteText( wxT("Reading another 500 bytes:\n\n") );
+
+ buf_input.Read( buf, 500 );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+
+ textCtrl.WriteText( wxT("Reading another 500 bytes:\n\n") );
+
+ buf_input.Read( buf, 500 );
+
+ textCtrl.WriteText( wxT("wxBufferedInputStream.GetLastError() returns: ") );
+ switch (buf_input.GetLastError())
+ {
+ case wxSTREAM_NO_ERROR: textCtrl.WriteText( wxT("wxSTREAM_NO_ERROR\n") ); break;
+ case wxSTREAM_EOF: textCtrl.WriteText( wxT("wxSTREAM_EOF\n") ); break;
+ case wxSTREAM_READ_ERROR: textCtrl.WriteText( wxT("wxSTREAM_READ_ERROR\n") ); break;
+ case wxSTREAM_WRITE_ERROR: textCtrl.WriteText( wxT("wxSTREAM_WRITE_ERROR\n") ); break;
+ default: textCtrl.WriteText( wxT("Huh?\n") ); break;
+ }
+ msg.Printf( wxT("wxBufferedInputStream.LastRead() returns: %d\n"), (int)buf_input.LastRead() );
+ textCtrl.WriteText( msg );
+ msg.Printf( wxT("wxBufferedInputStream.TellI() returns: %d\n"), (int)buf_input.TellI() );
+ textCtrl.WriteText( msg );
+ textCtrl.WriteText( wxT("\n\n") );
+}
+
+void MyApp::DoStreamDemo5(wxCommandEvent& WXUNUSED(event))
+{
+ wxTextCtrl& textCtrl = * GetTextCtrl();
+
+ textCtrl.Clear();
+ textCtrl << wxT("\nTesting wxFileInputStream's Peek():\n\n");
+
+ char ch;
+ wxString str;
+
+ textCtrl.WriteText( wxT("Writing number 0 to 9 to wxFileOutputStream:\n\n") );
+
+ wxFileOutputStream file_output( file_name );
+ for (ch = 0; ch < 10; ch++)
+ file_output.Write( &ch, 1 );
+
+ file_output.Sync();
+
+ wxFileInputStream file_input( file_name );
+
+ ch = file_input.Peek();
+ str.Printf( wxT("First char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = file_input.GetC();
+ str.Printf( wxT("First char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = file_input.Peek();
+ str.Printf( wxT("Second char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = file_input.GetC();
+ str.Printf( wxT("Second char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = file_input.Peek();
+ str.Printf( wxT("Third char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = file_input.GetC();
+ str.Printf( wxT("Third char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+
+ textCtrl << wxT("\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( wxT("First char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = input.GetC();
+ str.Printf( wxT("First char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = input.Peek();
+ str.Printf( wxT("Second char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = input.GetC();
+ str.Printf( wxT("Second char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = input.Peek();
+ str.Printf( wxT("Third char peeked: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+
+ ch = input.GetC();
+ str.Printf( wxT("Third char read: %d\n"), (int) ch );
+ textCtrl.WriteText( str );
+}
+
+void MyApp::DoStreamDemo6(wxCommandEvent& WXUNUSED(event))
+{
+ wxTextCtrl& textCtrl = * GetTextCtrl();
+
+ textCtrl.Clear();
+ textCtrl.WriteText( wxT("\nTesting Ungetch():\n\n") );
+
+ char ch = 0;
+ wxString str;
+
+ textCtrl.WriteText( wxT("Writing number 0 to 9 to wxFileOutputStream...\n\n") );
+
+ wxFileOutputStream file_output( file_name );
+ for (ch = 0; ch < 10; ch++)
+ file_output.Write( &ch, 1 );
+
+ file_output.Sync();
+
+ textCtrl.WriteText( wxT("Reading char from wxFileInputStream:\n\n") );
+
+ wxFileInputStream file_input( file_name );
+
+ ch = file_input.GetC();
+ size_t pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading another char from wxFileInputStream:\n\n") );
+
+ ch = file_input.GetC();
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading yet another char from wxFileInputStream:\n\n") );
+
+ ch = file_input.GetC();
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Now calling Ungetch( 5 ) from wxFileInputStream...\n\n") );
+
+ file_input.Ungetch( 5 );
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Now at position %d\n\n"), (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading char from wxFileInputStream:\n\n") );
+
+ ch = file_input.GetC();
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading another char from wxFileInputStream:\n\n") );
+
+ ch = file_input.GetC();
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Now calling Ungetch( 5 ) from wxFileInputStream again...\n\n") );
+
+ file_input.Ungetch( 5 );
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Now at position %d\n\n"), (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Seeking to pos 3 in wxFileInputStream. This invalidates the writeback buffer.\n\n") );
+
+ file_input.SeekI( 3 );
+
+ ch = file_input.GetC();
+ pos = (size_t)file_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+}
+
+void MyApp::DoStreamDemo7(wxCommandEvent& WXUNUSED(event))
+{
+ wxTextCtrl& textCtrl = * GetTextCtrl();
+
+ textCtrl.Clear();
+ textCtrl.WriteText( wxT("\nTesting Ungetch() in buffered input stream:\n\n") );
+
+ char ch = 0;
+ wxString str;
+
+ textCtrl.WriteText( wxT("Writing number 0 to 9 to wxFileOutputStream...\n\n") );
+
+ wxFileOutputStream file_output( file_name );
+ for (ch = 0; ch < 10; ch++)
+ file_output.Write( &ch, 1 );
+
+ file_output.Sync();
+
+ textCtrl.WriteText( wxT("Reading char from wxBufferedInputStream via wxFileInputStream:\n\n") );
+
+ wxFileInputStream file_input( file_name );
+ wxBufferedInputStream buf_input( file_input );
+
+ ch = buf_input.GetC();
+ size_t pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading another char from wxBufferedInputStream:\n\n") );
+
+ ch = buf_input.GetC();
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading yet another char from wxBufferedInputStream:\n\n") );
+
+ ch = buf_input.GetC();
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Now calling Ungetch( 5 ) from wxBufferedInputStream...\n\n") );
+
+ buf_input.Ungetch( 5 );
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Now at position %d\n\n"), (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading char from wxBufferedInputStream:\n\n") );
+
+ ch = buf_input.GetC();
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Reading another char from wxBufferedInputStream:\n\n") );
+
+ ch = buf_input.GetC();
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Now calling Ungetch( 5 ) from wxBufferedInputStream again...\n\n") );
+
+ buf_input.Ungetch( 5 );
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Now at position %d\n\n"), (int) pos );
+ textCtrl.WriteText( str );
+
+ textCtrl.WriteText( wxT("Seeking to pos 3 in wxBufferedInputStream. This invalidates the writeback buffer.\n\n") );
+
+ buf_input.SeekI( 3 );
+
+ ch = buf_input.GetC();
+ pos = (size_t)buf_input.TellI();
+ str.Printf( wxT("Read char: %d. Now at position %d\n\n"), (int) ch, (int) pos );
+ textCtrl.WriteText( str );