#include<Windows.h>
#include<d3d9.h>
#include<d3dx9.h>
#include<iostream>
#include <dinput.h>
using namespace std;
#pragma comment(lib,"d3d9.lib")
#pragma comment(lib,"d3dx9.lib")
#pragma comment(lib,"dinput8.lib")
#pragma comment(lib,"dxguid.lib")
#define KEY_DOWN(vk_code)((GetAsyncKeyState(vk_code)&0x8000)?1:0)
const string APPTITLE = "XInput Test Program";
const int SCREENW = 640;
const int SCREENH = 480;
LPDIRECT3D9 d3d = NULL;
LPDIRECT3DDEVICE9 d3ddev = NULL;

LPDIRECTINPUT8 lpdi = NULL;
LPDIRECTINPUTDEVICE8 dimouse = NULL;
DIMOUSESTATE mouse_state;

bool gameover = false;

bool Game_Init(HWND hwnd)
{
    if (lpdi->CreateDevice(GUID_SysMouse, &dimouse, NULL) != DI_OK)
        return(0);

    //设置鼠标协作等级，设置为后台/非独占模式
    if (dimouse->SetCooperativeLevel(hwnd, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND) != DI_OK)
        return(0);

    //设置数据格式,鼠标对应的数据格式为c_dfDIMouse
    if (dimouse->SetDataFormat(&c_dfDIMouse) != DI_OK)
        return(0);

    //获取鼠标
    if (dimouse->Acquire() != DI_OK)
        return(0);
}
void Game_Run(HWND hwnd)
{
    //读取鼠标数据
    if (dimouse)
    {
        if (dimouse->GetDeviceState(sizeof(DIMOUSESTATE), (LPVOID)&mouse_state) != DI_OK)
            return;
    }
    else
    {
        //如果没有插入鼠标，则将鼠标数据结构置为0
        memset(&mouse_state, 0, sizeof(mouse_state));
        return;
    }
    return;
}
void Game_End(HWND hwnd)
{
    if (d3ddev) d3ddev->Release();
    if (d3d)d3d->Release();
    if (dimouse)dimouse->Release();
}
LRESULT WINAPI WinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case WM_DESTROY:
        gameover = true;
        break;
    }
    return DefWindowProc(hWnd, msg, wParam, lParam);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wc;
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = (WNDPROC)WinProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hIcon = NULL;
    wc.hIconSm = NULL;
    wc.lpszMenuName = NULL;
    wc.hInstance = hInstance;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wc.lpszClassName = "MainWindowClass";
    if (!RegisterClassEx(&wc))
        return FALSE;
    HWND window = CreateWindow("MainWindowClass", APPTITLE.c_str(), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, SCREENW, SCREENH, NULL, NULL, hInstance, NULL);
    if (window == 0) return 0;
    ShowWindow(window, nCmdShow);
    UpdateWindow(window);
    if (!Game_Init(window))return 0;
    MSG message;
    while (!gameover)
    {
        if (PeekMessage(&message, NULL, 0, 0, PM_REMOVE))
        {
            TranslateMessage(&message);
            DispatchMessage(&message);
        }
        Game_Run(window);
        if (mouse_state.rgbButtons[0] & 0x80) //左键是否按下
        {
            int i = 0;
            MessageBox(window, "ok", "ok", 0);
        }
        //mouse_state.lX;            ///鼠标横向移动的距离
        //mouse_state.lY;           ///鼠标纵向移动的距离
        //mouse_state.rgbButtons[0];  ///鼠标左键是否按下
        //mouse_state.rgbButtons[1];  ///鼠标右键是否按下
        //mouse_state.rgbButtons[2];  ///鼠标中键是否按下
    }
    Game_End(window);
    return message.wParam;
}