不能改。
如果确实要做,你可以做一个计划任务,然后输入代码(不过测试的效果也不是太好)
Dim frm = Windows.Forms.Form.ActiveForm
If frm IsNot Nothing Then
If frm.name = "frmTalker" Then
For Each c As object In frm.controls("SplitContainer1").panel1.controls
c.font = new font("宋体", 15)
Next
For Each c As object In frm.controls("SplitContainer1").panel2.controls
c.font = new font("宋体", 15)
Next
End If
If frm.name = "frmPopmessage" Then
For Each c As object In frm.controls
c.font = new font("宋体", 15)
Next
End If
End If