private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{
Class3ChildForm chd = new Class3ChildForm();
chd.MdiParent = this;
chd.Show();
}
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "富文本文件(*.ustb)|*.ustb";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
Class3ChildForm childForm = new Class3ChildForm();
childForm.MdiParent = this;
childForm.Show();
childForm.richTextBox1.LoadFile(openFileDialog.FileName);
childForm.filePath = openFileDialog.FileName;
}
}
