protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
var hasCtrl = keyData.AnyKey(Keys.Control);
var hasShift = keyData.AnyKey(Keys.Shift);
var sleepTimer = hasCtrl ? 0 : hasShift ? 100 : 50;
if (keyData.AnyKey(Keys.Oemplus, Keys.Add))
{
image.aZoom((decimal)0.1 * zoom);
}
else if (keyData.AnyKey(Keys.OemMinus, Keys.Subtract))
{
image.aZoom(-(decimal)0.1 * zoom);
}
else if (keyData.AnyKey(Keys.Up))
{
image.aZoom(baseZoom - zoom);
}
else if (keyData.AnyKey(Keys.Left))
{
backward(sleepTimer);
}
else if (keyData.AnyKey(Keys.Right))
{
forward(sleepTimer);
}
else if (keyData.AnyKey(Keys.Delete))
{
delete();
}
else if (keyData.AnyKey(Keys.F11))
{
fullscreen();
}
else if (keyData.AnyKey(Keys.Escape))
{
tb_zoom.Visible = false;
}
return(base.ProcessCmdKey(ref msg, keyData));
}