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void CMyView::DrawDynamicLineChart(CDC* pDC)
{
    // 璁剧疆鍧愭爣绯荤殑鍘熺偣鍜屽ぇ灏?/span>
    int originX = 50;
    int originY = 250;
    int chartWidth = 400;
    int chartHeight = 200;

    // 璁剧疆鏁版嵁鐐?/span>
    int dataPoints[] = {50, 100, 150, 200, 250, 200, 150, 100, 50};

    // 缁樺埗鍧愭爣杞?/span>
    pDC->MoveTo(originX, originY);
    pDC->LineTo(originX + chartWidth, originY);
    pDC->MoveTo(originX, originY);
    pDC->LineTo(originX, originY - chartHeight);

    // 缁樺埗鎶樼嚎
    int numDataPoints = sizeof(dataPoints) / sizeof(dataPoints[0]);
    int stepX = chartWidth / (numDataPoints - 1);
    int prevX = originX;
    int prevY = originY - dataPoints[0];

    for (int i = 1; i < numDataPoints; i++) {
        int x = originX + i * stepX;
        int y = originY - dataPoints[i];
        pDC->MoveTo(prevX, prevY);
        pDC->LineTo(x, y);
        prevX = x;
        prevY = y;
    }
}

void CMyView::OnDraw(CDC* pDC)
{
    CDocument* pDoc = GetDocument();
    ASSERT_VALID(pDoc);

    if (!pDC)
        return;

    // 鍦ㄦ澶勬坊鍔犵粯鍒朵唬鐮?/span>
    DrawDynamicLineChart(pDC);
}

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void CMainFrame::OnTimer(UINT_PTR nIDEvent)
{
    CMyView* pView = (CMyView*)GetActiveView();
    if (pView != nullptr) {
        pView->Invalidate();
    }
    CFrameWnd::OnTimer(nIDEvent);
}

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BOOL CMyApp::InitInstance()
{
    // ...

    // 鍒涘缓骞跺惎鍔ㄥ畾鏃跺櫒
    SetTimer(1, 1000, nullptr);

    // ...
}

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