// D3D鼠標.cpp : 定義應用程序的入口點。
//

#include "stdafx.h"
#include "D3D鼠標.h"
#include <string.h>
#include <dinput.h>
#include <dinputd.h>
#define MAX_LOADSTRING 100
#define SAFE_RELEASE(p) if(p) {p->Release();p=NULL;}

LPDIRECTINPUT8			m_pDInput;//接口指針
DIMOUSESTATE			m_MouseState;//鼠標的狀態
LPDIRECTINPUTDEVICE8	m_pDInputMouse;//設備指針
DIMOUSESTATE			m_MouseStateOld;//鼠標上一次的狀態

char Mouse[16]="\0";
char MouseX[8]="\0";
char MouseY[8]="\0";
char MouseZ[8]="\0";

// 全局變量:
HINSTANCE hInst;								// 當前實例
TCHAR szTitle[MAX_LOADSTRING];					// 標題欄文本
TCHAR szWindowClass[MAX_LOADSTRING];			// 主窗口類名

// 此代碼模塊中包含的函數的前向聲明:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
 	// TODO: 在此放置代碼。
	MSG msg;
	HACCEL hAccelTable;

	// 初始化全局字符串
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_D3D, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// 執行應用程序初始化:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_D3D);

	// 主消息循環:
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}



//
//  函數: MyRegisterClass()
//
//  目的: 注冊窗口類。
//
//  注釋: 
//
//    僅當希望在已添加到 Windows 95 的
//    “RegisterClassEx”函數之前此代碼與 Win32 系統兼容時，
//    才需要此函數及其用法。調用此函數
//    十分重要，這樣應用程序就可以獲得關聯的
//   “格式正確的”小圖標。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_D3D);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= (LPCTSTR)IDC_D3D;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

	return RegisterClassEx(&wcex);
}

//
//   函數: InitInstance(HANDLE, int)
//
//   目的: 保存實例句柄并創建主窗口
//
//   注釋: 
//
//        在此函數中，我們在全局變量中保存實例句柄并
//        創建和顯示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // 將實例句柄存儲在全局變量中

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  函數: WndProc(HWND, unsigned, WORD, LONG)
//
//  目的: 處理主窗口的消息。
//
//  WM_COMMAND	- 處理應用程序菜單
//  WM_PAINT	- 繪制主窗口
//  WM_DESTROY	- 發送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message) 
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam); 
		wmEvent = HIWORD(wParam); 
		// 分析菜單選擇:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_CREATE:
		if(DI_OK!=DirectInput8Create( hInst,DIRECTINPUT_VERSION,
			IID_IDirectInput8,(LPVOID*)&m_pDInput,NULL))
			MessageBox(hWnd,"創建DirectInput 對象失敗!","ERROR",MB_ICONERROR|MB_OK);
		if(DI_OK!=m_pDInput->CreateDevice(GUID_SysMouse,&m_pDInputMouse,NULL))
			MessageBox(hWnd,"創建鼠標設備失敗!","ERROR",MB_ICONERROR|MB_OK);
		if(DI_OK!=	m_pDInputMouse->SetDataFormat(&c_dfDIMouse)) 
			MessageBox(hWnd,"設置鼠標數據格式失敗!","ERROR",MB_ICONERROR|MB_OK); 
		m_pDInputMouse->SetCooperativeLevel(hWnd,DISCL_FOREGROUND);//|DISCL_EXCLUSIVE 
		m_pDInputMouse->Acquire();	//如果失敗，獲取數據時再嘗試獲取
		memset(&m_MouseState,0,sizeof(m_MouseState));		
		memset(&m_MouseStateOld,0,sizeof(m_MouseState));
//		ShowCursor(true);
		SetTimer(hWnd,1,100,NULL);
		break;
	case WM_TIMER:
		memcpy(&m_MouseStateOld,&m_MouseState,sizeof(m_MouseState));  

		if(DI_OK!=m_pDInputMouse->GetDeviceState(sizeof(m_MouseState),&m_MouseState))
		{	
			memset(&m_MouseState,0,sizeof(m_MouseState));	//清除上一次的狀態
			m_pDInputMouse->Acquire();
		}
 
		itoa(m_MouseState.lX,MouseX,10);
		//memcpy(Mouse,MouseX,sizeof(MouseX));
		strcpy(Mouse,MouseX);
		strcat(Mouse,",");
		itoa(m_MouseState.lY,MouseY,10);
		strcat(Mouse,MouseY);
		strcat(Mouse,",");
		itoa(m_MouseState.lZ,MouseZ,10);
		strcat(Mouse,MouseZ);
		//if(m_MouseState.rgbButtons[0])
		//	MessageBox(NULL,"fdsa","fdas",0);
		SetWindowText(hWnd,Mouse);
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: 在此添加任意繪圖代碼...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		m_pDInputMouse->Unacquire();
		SAFE_RELEASE(m_pDInputMouse);
		SAFE_RELEASE(m_pDInput);
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// “關于”框的消息處理程序。
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_INITDIALOG:
		return TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) 
		{
			EndDialog(hDlg, LOWORD(wParam));
			return TRUE;
		}
		break;
	}
	return FALSE;
}