利用mfc编写activex控件

利用mfc编写activex控件(4)

我们可以添加一些画图操作来使得事件表现得更明显，更改代码如下：

static int i = 0;

            if (InCircle(point))

            {

                        FireClickIn();

                        CString num;

                        CBrush brush;

                        CDC* pDC = GetDC();

                        CRect rt;

                        GetClientRect(rt);

                        CRgn rgn;

                        rgn.CreateEllipticRgnIndirect(rt);

                        num.Format("%d", j);

                        brush.CreateSolidBrush(RGB(0, 0, 255));

                        pDC->FillRgn(&rgn, &brush);

                        pDC->SetBkMode(TRANSPARENT);

                        pDC->TextOut((rt.left + rt.right) / 2, (rt.top + rt.bottom) / 2, num);

            }