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1.引用COM:MicroSoft Internet Controls 2. 核心代码如下: private void button2_Click(object sender, EventArgs e) { IWebBrowser2 axIWebBrowser2 =(IWebBrowser2) this.webBrowser1.ActiveXInstance; //关键代码 Zoom(axIWebBrowser2,150); } public void Zoom( IWebBrowser2 axIWebBrowser2,int factor) { object pvaIn = factor; try { axIWebBrowser2.ExecWB(OLECMDID.OLECMDID_OPTICAL_ZOOM, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref pvaIn, IntPtr.Zero); } catch (Exception ex) { MessageBox.Show(ex.Message); } }
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