悄悄的显示实时股票数据

定时从腾讯股票数据接口读取实时数据，在半透明的置顶小窗口显示。

股票的代码由命令行参数输入，可以通过建立批处理文件，显示关心的几个指数。

显示效果如图：

批处理文件：在执行文件后面加上股票代码即可。

 

代码如下：为了尽量单个文件实现，删掉了一些模板生成的资源量。

// XStock.cpp 
// 读取并显示股票实时数据 
// XGZ 2022-4-26 SZ 
//

#include "stdafx.h"

#include <WinInet.h>
#pragma comment(lib, "Wininet.lib")

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;                                // current instance
TCHAR szTitle[MAX_LOADSTRING] = _T("X");                    // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING] = _T("XStock20220426");            // the main window class name

TCHAR szCode[16] = _T("sh000001");

// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);


int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    wcscpy_s(szCode,16,lpCmdLine);
    
     // TODO: Place code here.
    MSG msg;
        
    MyRegisterClass(hInstance);

    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }
    
    // Main message loop:
    while (GetMessage(&msg, NULL, 0, 0))
    {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
    }

    return (int) msg.wParam;
}

ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEX wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

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

    return RegisterClassEx(&wcex);
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, 
      WS_VISIBLE |WS_CAPTION |WS_SYSMENU,
      CW_USEDEFAULT, 0, 250, 0, 
      NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

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

   return TRUE;
}

struct XSTOCK
{
    TCHAR url[256];
    float    RealValue;
    float    LastValue;
    float    change;
};

BOOL ReadStock(XSTOCK &stXStock);
typedef BOOL (WINAPI *lpfn)(HWND hWnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HMODULE hUser32 = GetModuleHandle(_T("user32.dll"));
    lpfn SetLayeredWindowAttributes1;

    static XSTOCK stXStock;

    switch (message)
    {
    case WM_CREATE:
        
        SetLayeredWindowAttributes1 = (lpfn)GetProcAddress(hUser32,"SetLayeredWindowAttributes");
        SetWindowLong(hWnd, GWL_EXSTYLE,GetWindowLong(hWnd, GWL_EXSTYLE) | WS_EX_LAYERED);
        SetLayeredWindowAttributes1( hWnd, RGB(255,255,255),  100, LWA_ALPHA );//设置透明度；
        FreeLibrary(hUser32); 
    
        swprintf(stXStock.url,  _T("http://qt.gtimg.cn/q=%s"),szCode );
        //swprintf(stXStock.url,  _T("http://qt.gtimg.cn/q=%s"),_T("sh000001") );
        
        if(ReadStock( stXStock))
        {
            swprintf(szTitle,  _T("%s %8.2f  %8.4f%%"),szCode, stXStock.RealValue,  stXStock.change * 100.0 );
        }
        else
        {
            swprintf(szTitle,  _T("%s      ----     ----%%"),szCode );
        }
        SetWindowText(hWnd, szTitle);
        SetWindowPos(hWnd, HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED); 
  
        SetTimer(hWnd, 1, 10000, NULL);   //10s
        break;
    case WM_TIMER:
        if(ReadStock( stXStock))
        {
            swprintf(szTitle,  _T("%s %8.2f  %8.4f%%"),szCode, stXStock.RealValue,  stXStock.change * 100.0 );
        }
        else
        {
            swprintf(szTitle,  _T("%s     ----      ----%%"),szCode );
        }
        SetWindowText(hWnd, szTitle);
        SetWindowPos(hWnd, HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED); 
        break;
case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

BOOL ReadStock(XSTOCK &stXStock)
{
    char strRead[1024]="";
    
    char *token;
    char *next_token = NULL;

    DWORD strLength = 1;

    HINTERNET hSession = InternetOpen(_T("UrlTest"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
    if(hSession != NULL)
    {
        HINTERNET hHttp = InternetOpenUrl(hSession, stXStock.url, NULL, 0, INTERNET_FLAG_DONT_CACHE, 0);
        if (hHttp != NULL)
        {
            InternetReadFile(hHttp, strRead, 1023, &strLength);  
            strRead[strLength] = '\0';

            token = strtok_s(strRead, "~", &next_token);  //交易所
            token = strtok_s(NULL, "~", &next_token); //股票名字
            token = strtok_s(NULL, "~", &next_token); //股票代码
            token = strtok_s(NULL, "~", &next_token); //当前价格
            stXStock.RealValue = atof(token);
            token = strtok_s(NULL, "~", &next_token); //昨收
            stXStock.LastValue = atof(token);
            stXStock.change = (stXStock.RealValue - stXStock.LastValue)/stXStock.LastValue;

            return TRUE;
        }
    }

    return FALSE;
};