这样处理
Select Case e.Path
Case "test.htm",""
Dim wb As new weui
Dim rp As String = "http://xxx.cn/report.html?id=1&wq=2&bb=3&cc=中文"
With wb.AddButtonGroup("","btg1",True)
.Add("btn1", "确定", "", "mailto:aaa@bbb.com?subject=ccc&body=" & UrlEncode(rp))
End With
e.WriteString(wb.Build)
End Select