#ifndef _MY_CONIO_H_FILE_INCLUDED 
#define _MY_CONIO_H_FILE_INCLUDED 

#include<stdio.h> 
#include<conio.h> 
#include<windows.h> 

#define PERR(bSuccess,api) {if(!(bSuccess)) printf("%s:Error %d from %s on line %d\n",__FILE__,GetLastError(),api,__LINE__);} 

void MyCls(HANDLE);
void GotoConsoleXY(HANDLE,int,int);

void clrscr()
{
HANDLE hStdOut=GetStdHandle(STD_OUTPUT_HANDLE);
MyCls(hStdOut); 
return;
}

void gotoxy(int x,int y) 
{ 
HANDLE hStdOut=GetStdHandle(STD_OUTPUT_HANDLE); 
GotoConsoleXY(hStdOut,x,y); 
return; 
} 

void MyCls(HANDLE hConsole) 
{ 
COORD coordScreen={0,0};//設置清屏后光標返回的屏幕左上角坐標 
BOOL bSuccess; 
DWORD cCharsWritten; 
CONSOLE_SCREEN_BUFFER_INFO csbi;//保存緩沖區(qū)信息 

DWORD dwConSize;//當前緩沖區(qū)可容納的字符數(shù) 

bSuccess=GetConsoleScreenBufferInfo(hConsole,&csbi);//獲得緩沖區(qū)信息 
PERR(bSuccess,"GetConsoleScreenBufferInfo"); 
dwConSize=csbi.dwSize.X * csbi.dwSize.Y;//緩沖區(qū)容納字符數(shù)目 

//用空格填充緩沖區(qū) 
bSuccess=FillConsoleOutputCharacter(hConsole,(TCHAR)' ',dwConSize,coordScreen,&cCharsWritten); 
PERR(bSuccess,"FillConsoleOutputCharacter"); 

bSuccess=GetConsoleScreenBufferInfo(hConsole,&csbi);//獲得緩沖區(qū)信息 
PERR(bSuccess,"ConsoleScreenBufferInfo"); 

//填充緩沖區(qū)屬性 
bSuccess=FillConsoleOutputAttribute(hConsole,csbi.wAttributes,dwConSize,coordScreen,&cCharsWritten); 
PERR(bSuccess,"FillConsoleOutputAttribute"); 

//光標返回屏幕左上角坐標 
bSuccess=SetConsoleCursorPosition(hConsole,coordScreen); 
PERR(bSuccess,"SetConsoleCursorPosition"); 
return; 
} 

void GotoConsoleXY(HANDLE hConsole,int x,int y) 
{ 
COORD coordScreen={x,y}; 
SetConsoleCursorPosition(hConsole,coordScreen); 
return; 
} 

#endif //_MY_CONIO_H_FILE_INCLUDED