TnbConsoleScreen.h

[詳解]

#pragma once
#include "TnbDef.h"
#include <io.h>
#include <fcntl.h>
 
 
 
//TNB Library
namespace TNB
{
 
 
 
class CConsoleScreen : CCopyImpossible
{
public:
 
    CConsoleScreen(void) : m_console(-1)
    {
    }
 
    ~CConsoleScreen(void)
    {
        Close();
    }
 
    bool Open(void)
    {
        Close();
        ::AllocConsole();
        HANDLE h = ::GetStdHandle(STD_OUTPUT_HANDLE);
        m_console = ::_open_osfhandle(reinterpret_cast<INT_PTR>(h), _O_TEXT);
        if ( m_console < 0 )
        {
            ::FreeConsole();
            return false;
        }
        *stdout = *::_fdopen(m_console, "w");
        ::setvbuf(stdout, NULL, _IONBF, 0);
        return true;
    }
 
    void Close(void)
    {
        if ( m_console >= 0 )
        {
            _close(m_console);
            ::FreeConsole();
            m_console = -1;
        }
    }
 
    bool IsOpened(void) const
    {
        return m_console >= 0;
    }
 
    int Print(LPCTSTR lpFmt, ...)
    {
        int r = -1;
        if ( IsOpened() )
        {
            va_list args;
            va_start(args, lpFmt);
            r = _vftprintf(stdout, lpFmt, args);
            va_end(args);
        }
        return r;
    }
 
private:
    int     m_console;
};
 
 
 
}; // TNB