private void Mainframe_Load(object sender, EventArgs e)
{
Form1 _2d = new Form1();
_2d.MdiParent = this;
_2d.Show();
_3dForm _3d = new _3dForm();
_3d.MdiParent = this;
_3d.Show();
}
private void dToolStripMenuItem1_Click(object sender, EventArgs e)
{
_3dForm _3d = new _3dForm();
_3d.MdiParent = this;
_3d.Show();
}
