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this.ActivateMdiChild(frm2);
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.Control && e.KeyCode == Keys.C)
{
MessageBox.Show("按下了ctrl + c");
}
if (e.Control && e.KeyCode == Keys.V)
{
MessageBox.Show("按下了ctrl + v");
}
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.C && e.Control)
{
MessageBox.Show("Test");
}
}
if (e.Control && e.KeyCode == Keys.C)