在mfc中打開console窗口，備忘。
1 console.h
#ifndef __Console_H__
#define __Console_H__
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <io.h>
#include <Windows.h>
class Console : public Singleton<ARCConsole>
{
public:
Console()
{
if (!m_hConsoleOutput)
{
AllocConsole();
m_hConsoleOutput = GetStdHandle(STD_OUTPUT_HANDLE);
char str[512] = "start Console Log...\n";
WriteConsole(m_hConsoleOutput, str, strlen(str),NULL, NULL);
}
}
void printf(const char* format, ...)
{
va_list args;
int len = 0;
char str[512] = {0};
va_start(args, format);
len = vsprintf(str, format, args) + 1;
WriteConsole(m_hConsoleOutput, str, len,NULL, NULL);
va_end(args);
return;
}
~Console()
{
if (m_hConsoleOutput)
{
char str[512] = "destroy console...\n";
WriteConsole(m_hConsoleOutput, str, strlen(str),NULL, NULL);
CloseHandle(m_hConsoleOutput);
FreeConsole();
}
}
static ARCConsole& getSingleton( void )
{
assert( ms_Singleton ); return ( *ms_Singleton );
}
static ARCConsole* getSingletonPtr( void )
{
return ms_Singleton;
}
protected:
static HANDLE m_hConsoleOutput;
};
template<> Console* Ogre::Singleton<Console>::ms_Singleton = 0;
HANDLE Console::m_hConsoleOutput = 0;
extern Console _G_Console;
Console _G_Console;
偷懶繼承了ogre裏的singleton類。若不同的lib分別創建了實例，子類記得覆蓋父類的getSingleton()和getSingletonPtr()2個函數。 |
2 singleton.h
template <typename T> class Singleton
{
private:
/** \brief Explicit private copy constructor. This is a forbidden operation.*/
Singleton(const Singleton<T> &);
/** \brief Private operator= . This is a forbidden operation. */
Singleton& operator=(const Singleton<T> &);
protected:
static T* ms_Singleton;
public:
Singleton( void )
{
assert( !ms_Singleton );
#if defined( _MSC_VER ) && _MSC_VER < 1200
int offset = (int)(T*)1 - (int)(Singleton <T>*)(T*)1;
ms_Singleton = (T*)((int)this + offset);
#else
ms_Singleton = static_cast< T* >( this );
#endif
}
~Singleton( void )
{ assert( ms_Singleton ); ms_Singleton = 0; }
static T& getSingleton( void )
{ assert( ms_Singleton ); return ( *ms_Singleton ); }
static T* getSingletonPtr( void )
{ return ms_Singleton; }
};