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 // Copyright:   (c) 2013 Vadim Zeitlin <vadim@wxwidgets.org>
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_MSW_PRIVATE_PIPESTREAM_H_
  11 #define _WX_MSW_PRIVATE_PIPESTREAM_H_
  12
  13 class wxPipeInputStream : public wxInputStream
  14 {
  15 public:
  16     wxEXPLICIT wxPipeInputStream(HANDLE hInput);
  17     virtual ~wxPipeInputStream();
  18
  19     // returns true if the pipe is still opened
  20     bool IsOpened() const { return m_hInput != INVALID_HANDLE_VALUE; }
  21
  22     // returns true if there is any data to be read from the pipe
  23     virtual bool CanRead() const;
  24
  25 protected:
  26     virtual size_t OnSysRead(void *buffer, size_t len);
  27
  28 protected:
  29     HANDLE m_hInput;
  30
  31     wxDECLARE_NO_COPY_CLASS(wxPipeInputStream);
  32 };
  33
  34 class wxPipeOutputStream: public wxOutputStream
  35 {
  36 public:
  37     wxEXPLICIT wxPipeOutputStream(HANDLE hOutput);
  38     virtual ~wxPipeOutputStream() { Close(); }
  39     bool Close();
  40
  41 protected:
  42     size_t OnSysWrite(const void *buffer, size_t len);
  43
  44 protected:
  45     HANDLE m_hOutput;
  46
  47     wxDECLARE_NO_COPY_CLASS(wxPipeOutputStream);
  48 };
  49
  50 #endif // _WX_MSW_PRIVATE_PIPESTREAM_H_