// 读取控制台输入缓冲事件,ReadProcessInputBufferDemo
// 简单介绍如何处理输入缓冲的事件
// 建议使用vs2005以上版本编译 unicode编码
#include <windows.h>
#include <iostream>
using std::wcout;
using std::endl;

HANDLE hStdin; 
DWORD fdwSaveOldMode;

VOID ErrorExit(LPSTR);
VOID KeyEventProc(KEY_EVENT_RECORD); 
VOID MouseEventProc(MOUSE_EVENT_RECORD); 
VOID ResizeEventProc(WINDOW_BUFFER_SIZE_RECORD);

int _tmain(int argc, _TCHAR* argv[])
{
	// 输出中文
	std::wcout.imbue(std::locale("chs"));

	// 设置控制台标题栏
	SetConsoleTitle(TEXT("ReadProcessInputBufferDemo"));

	DWORD cNumRead, fdwMode, i; 
	INPUT_RECORD irInBuf[128]; 
	int counter=0;

	// Get the standard input handle.
	hStdin = GetStdHandle(STD_INPUT_HANDLE); 
	if (hStdin == INVALID_HANDLE_VALUE) 
		ErrorExit("GetStdHandle"); 

	// Save the current input mode, to be restored on exit. 
	if (! GetConsoleMode(hStdin, &fdwSaveOldMode) ) 
		ErrorExit("GetConsoleMode"); 

	// Enable the window and mouse input events. 
	fdwMode = ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT| ENABLE_EXTENDED_FLAGS; 
	if (! SetConsoleMode(hStdin, fdwMode) ) 
		ErrorExit("SetConsoleMode"); 

	// Loop to read and handle the next 100 input events.
	while (counter++ <= 100) 
	{ 
		// Wait for the events. 
		if (! ReadConsoleInput( 
			hStdin, // input buffer handle 
			irInBuf, // buffer to read into 
			128, // size of read buffer 
			&cNumRead) ) // number of records read 
			ErrorExit("ReadConsoleInput"); 

		// Dispatch the events to the appropriate handler. 
		for (i = 0; i < cNumRead; i++) 
		{
			switch(irInBuf[i].EventType) 
			{ 
			case KEY_EVENT: // keyboard input 
				KeyEventProc(irInBuf[i].Event.KeyEvent); 
				break; 

			case MOUSE_EVENT: // mouse input 
				MouseEventProc(irInBuf[i].Event.MouseEvent); 
				break; 

			case WINDOW_BUFFER_SIZE_EVENT: // scrn buf. resizing 
				ResizeEventProc( irInBuf[i].Event.WindowBufferSizeEvent ); 
				break; 

			case FOCUS_EVENT: // disregard focus events 

			case MENU_EVENT: // disregard menu events 
				break; 

			default: 
				ErrorExit("Unknown event type"); 
				break; 
			} 
		}
	} 

	// Restore input mode on exit.
	SetConsoleMode(hStdin, fdwSaveOldMode);

	return 0; 
}

VOID ErrorExit (LPSTR lpszMessage) 
{ 
	fprintf(stderr, "%s\n", lpszMessage); 

	// Restore input mode on exit.
	SetConsoleMode(hStdin, fdwSaveOldMode);

	ExitProcess(0); 
}

VOID KeyEventProc(KEY_EVENT_RECORD ker)
{
	printf("Key event: ");

	if(ker.bKeyDown)
		printf("key pressed\n");
	else printf("key released\n");
}

VOID MouseEventProc(MOUSE_EVENT_RECORD mer)
{
#ifndef MOUSE_HWHEELED
#define MOUSE_HWHEELED 0x0008
#endif
	printf("Mouse event: ");

	switch(mer.dwEventFlags)
	{
	case 0:

		if(mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
		{
			printf("left button press \n");
		}
		else if(mer.dwButtonState == RIGHTMOST_BUTTON_PRESSED)
		{
			printf("right button press \n");
		}
		else
		{
			printf("button press\n");
		}
		break;
	case DOUBLE_CLICK:
		printf("double click\n");
		break;
	case MOUSE_HWHEELED:
		printf("horizontal mouse wheel\n");
		break;
	case MOUSE_MOVED:
		printf("mouse moved\n");
		break;
	case MOUSE_WHEELED:
		printf("vertical mouse wheel\n");
		break;
	default:
		printf("unknown\n");
		break;
	}
}

VOID ResizeEventProc(WINDOW_BUFFER_SIZE_RECORD wbsr)
{
	printf("Resize event\n");
	printf("Console screen buffer is %d columns by %d rows.\n", wbsr.dwSize.X, wbsr.dwSize.Y);
}