こんにちは。
aviatorさんが仰っている方向になると思いますが。
private void button1_Click(object sender, EventArgs e)
{
currentFrm = new Form2();
currentFrm.StartPosition = FormStartPosition.CenterScreen;
currentFrm.Show();
startLeft = currentFrm.Left;
startTop = currentFrm.Top;
}
private Form2 currentFrm;
private int startLeft;
private int startTop;
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
if (currentFrm == null) return;
currentFrm.Left = startLeft + (int)numericUpDown1.Value;
}
private void numericUpDown2_ValueChanged(object sender, EventArgs e)
{
if (currentFrm == null) return;
currentFrm.Top = startTop + (int)numericUpDown2.Value;
}
