private void Form1_KeyDown(object sender, KeyEventArgs e)
{
isControlKeyPress = e.Control;
PanelPaint.Focus();
if (e.KeyCode == Keys.Delete)
{
btnDelete.PerformClick();
}
}
private void Form1_KeyUp(object sender, KeyEventArgs e)
{
isControlKeyPress = e.Control;
PanelPaint.Focus();
}