include/wx/msw/private/pipestream.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/private/pipestream.h
   3 // Purpose:     MSW wxPipeInputStream and wxPipeOutputStream declarations
   4 // Author:      Vadim Zeitlin
   5 // Created:     2013-06-08 (extracted from src/msw/utilsexc.cpp)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2013 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_MSW_PRIVATE_PIPESTREAM_H_
  12 #define _WX_MSW_PRIVATE_PIPESTREAM_H_
  13
  14 class wxPipeInputStream : public wxInputStream
  15 {
  16 public:
  17     wxEXPLICIT wxPipeInputStream(HANDLE hInput);
  18     virtual ~wxPipeInputStream();
  19
  20     // returns true if the pipe is still opened
  21     bool IsOpened() const { return m_hInput != INVALID_HANDLE_VALUE; }
  22
  23     // returns true if there is any data to be read from the pipe
  24     virtual bool CanRead() const;
  25
  26 protected:
  27     virtual size_t OnSysRead(void *buffer, size_t len);
  28
  29 protected:
  30     HANDLE m_hInput;
  31
  32     wxDECLARE_NO_COPY_CLASS(wxPipeInputStream);
  33 };
  34
  35 class wxPipeOutputStream: public wxOutputStream
  36 {
  37 public:
  38     wxEXPLICIT wxPipeOutputStream(HANDLE hOutput);
  39     virtual ~wxPipeOutputStream() { Close(); }
  40     bool Close();
  41
  42 protected:
  43     size_t OnSysWrite(const void *buffer, size_t len);
  44
  45 protected:
  46     HANDLE m_hOutput;
  47
  48     wxDECLARE_NO_COPY_CLASS(wxPipeOutputStream);
  49 };
  50
  51 #endif // _WX_MSW_PRIVATE_PIPESTREAM_H_