public static ShowBmp1 CreateInstrance()
{
if (frm == null || frm.IsDisposed)
{
frm = new ShowBmp1();
}
return(frm);
}
//印张开版
private void button1_Click(object sender, EventArgs e)
{
ShowBmp1 ShowBmp1 = ShowBmp1.CreateInstrance();
ShowBmp1.Show();
}
