给出Windows API 绘制交互式K线的详细代码？

以下是一个简单的 Windows API 绘制交互式 K 线图的示例代码，其中使用了 GDI+ 库进行绘制。

#include <windows.h>
#include <gdiplus.h>

#pragma comment(lib, "gdiplus.lib")

using namespace Gdiplus;

// K 线数据结构
struct KLine
{
    double open;
    double high;
    double low;
    double close;
};

// K 线图数据
KLine klines[] = {
    { 100, 120, 80, 110 },
    { 110, 130, 90, 120 },
    { 120, 140, 100, 130 },
    { 130, 150, 110, 140 },
    { 140, 160, 120, 150 },
    { 150, 170, 130, 160 },
    { 160, 180, 140, 170 },
    { 170, 190, 150, 180 },
    { 180, 200, 160, 190 },
    { 190, 210, 170, 200 },
};

// K 线图参数
const int klineCount = sizeof(klines) / sizeof(KLine);
const int margin = 50;
const int width = 800;
const int height = 600;
const int barWidth = (width - margin * 2) / klineCount;
const double maxValue = 220;
const double minValue = 70;

// 绘制 K 线图
void DrawKLine(HDC hdc)
{
    Graphics graphics(hdc);
    Pen pen(Color(255, 255, 255));
    SolidBrush brush(Color(255, 255, 255));

    // 绘制坐标轴
    graphics.DrawLine(&pen, margin, margin, margin, height - margin);
    graphics.DrawLine(&pen, margin, height - margin, width - margin, height - margin);

    // 绘制 Y 轴标尺
    for (double value = minValue; value <= maxValue; value += 20)
    {
        int y = height - margin - (value - minValue) * (height - margin * 2) / (maxValue - minValue);
        graphics.DrawLine(&pen, margin - 5, y, margin, y);
        graphics.DrawString(std::to_wstring(value).c_str(), -1, &FontFamily(L"Arial"), PointF(0, y - 10), &brush);
    }

    // 绘制 K 线
    for (int i = 0; i < klineCount; i++)
    {
        int x = margin + i * barWidth + barWidth / 2;
        int openY = height - margin - (klines[i].open - minValue) * (height - margin * 2) / (maxValue - minValue);
        int highY = height - margin - (klines[i].high - minValue) * (height - margin * 2) / (maxValue - minValue);
        int lowY = height - margin - (klines[i].low - minValue) * (height - margin * 2) / (maxValue - minValue);
        int closeY = height - margin - (klines[i].close - minValue) * (height - margin * 2) / (maxValue - minValue);

        if (klines[i].close > klines[i].open)
        {
            // 绘制阳线
            graphics.DrawLine(&pen, x, highY, x, lowY);
            graphics.DrawLine(&pen, x - barWidth / 2, closeY, x, closeY);
            graphics.DrawLine(&pen, x, openY, x + barWidth / 2, openY);
        }
        else
        {
            // 绘制阴线
            graphics.DrawLine(&pen, x, highY, x, lowY);
            graphics.DrawLine(&pen, x - barWidth / 2, openY, x, openY);
            graphics.DrawLine(&pen, x, closeY, x + barWidth / 2, closeY);
        }
    }
}

// 窗口过程
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hwnd, &ps);
            DrawKLine(hdc);
            EndPaint(hwnd, &ps);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}

// 程序入口
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 初始化 GDI+
    GdiplusStartupInput gdiplusStartupInput;
    ULONG_PTR gdiplusToken;
    GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

    // 创建窗口
    WNDCLASS wc = { 0 };
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInstance;
    wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND);
    wc.lpszClassName = L"KLineWindowClass";
    RegisterClass(&wc);
    HWND hwnd = CreateWindow(L"KLineWindowClass", L"K 线图", WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, width, height, NULL, NULL, hInstance, NULL);
    ShowWindow(hwnd, nCmdShow);

    // 消息循环
    MSG msg = { 0 };
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    // 关闭 GDI+
    GdiplusShutdown(gdiplusToken);

    return (int)msg.wParam;
}

这个示例代码使用了一个简单的 K 线数据结构和一些固定的绘图参数进行绘制。在实际应用中，你需要根据实际的数据进行计算和绘制。