private void 输入框ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmchild1 frm = new frmchild1(); //创建 frmchild1 对象
frm.MdiParent = this; //设置当前窗体
frm.Show(); //打开窗体
}
private void 输入框ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmchild1 frm = new frmchild1(); //创建 frmchild1 对象
frm.MdiParent = this; //设置当前窗体
frm.Show(); //打开窗体
}