wg_error.h

一个小巧的嵌入式图形系统wGUI, 可以用VC编译

// wg_error.h
//
// wGui error classes
//
//
// Copyright (c) 2002 Rob Wiskow
// [e-mail]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


// This is for all the exception classes that are used in wGui

#ifndef _WG_ERROR_H_
#define _WG_ERROR_H_

#include <exception>
#include <string>


namespace wGui
{

//! All wGui exception classes are derived from here
class Wg_Ex_Base : public std::exception
{
public:
	//! \param sWhat A string for more information on what caused the exception
	Wg_Ex_Base(const std::string& sWhat) : m_sWhat(sWhat) { }

	//! Standard Destructor
	virtual ~Wg_Ex_Base(void) throw() { }

	//! \return A string describing what caused the exception
	virtual const char* what() const throw() { return m_sWhat.c_str(); }

	//! \return A std::string reference describing what caused the exception
	virtual const std::string& std_what() const throw() { return m_sWhat; }

private:
	std::string m_sWhat;
};


//! Exceptions caused by SDL errors
class Wg_Ex_SDL : public Wg_Ex_Base
{
public:
	//! \param sWhat A string for more information on what caused the exception
	Wg_Ex_SDL(const std::string& sWhat) : Wg_Ex_Base(sWhat) { }
};


//! Exceptions caused by FreeType errors
class Wg_Ex_FreeType : public Wg_Ex_Base
{
public:
	//! \param sWhat A string for more information on what caused the exception
	Wg_Ex_FreeType(const std::string& sWhat) : Wg_Ex_Base(sWhat) { }
};


//! General wGui errors
class Wg_Ex_App : public Wg_Ex_Base
{
public:
	//! \param sWhat A string for more information on what caused the exception
	Wg_Ex_App(const std::string& sWhat) : Wg_Ex_Base(sWhat) { }
};


//! Exceptions caused by out-of-range type errors
class Wg_Ex_Range : public Wg_Ex_Base
{
public:
	//! \param sWhat A string for more information on what caused the exception
	Wg_Ex_Range(const std::string& sWhat) : Wg_Ex_Base(sWhat) { }
};

}

#endif // _WG_ERROR_H_