app.h

三汇CTI示例程序源码

#pragma once
#include "Resource.h"
#include "MainFrame.h"

class App : public CWinApp
{
public:
	virtual BOOL InitInstance();

DECLARE_MESSAGE_MAP()
};

// CHS:	这个模板检查了函数的返回值，但并不是一个通用的异常处理的实现，
//      您的程序可能更应该使用合适自己的方式。
// ENG: This template is intended for checking the return value of the specified function.
//      However it is not a generic expection handler.
//      You may deal with expections in a more appropriate way.
template<class T> class check_ret
{
public:
	T _ret_expected;
	check_ret(const T &ret_expected)
		: _ret_expected(ret_expected)
	{
		return;
	}
	friend const T & operator<<(const check_ret<T> &logger, const T &ret);
};

template<class T> inline const T & operator<<(const check_ret<T> &logger, const T &ret)
{
	if (logger._ret_expected != ret)
	{
		OutputDebugString("An error occurs.\n");
	}
	return ret;
}
// CHS: 如果返回值不是0，输出错误。
// ENG: Invoke OutputDebugString if return value is not 0.
#define CHECK_RETURN check_ret<int>(0) <<

extern App app;

extern MainFrame* pFrame;
extern int conf_active;
extern HWND child_hwnd;