protected override void OnKeyPress(KeyPressEventArgs kpea)
{
caret.Hide();
Graphics grfx = CreateGraphics();
grfx.FillRectangle(new SolidBrush(BackColor),
new RectangleF(Point.Empty,
grfx.MeasureString(strText, Font,
Point.Empty, StringFormat.GenericTypographic)));
switch (kpea.KeyChar)
{
case '\b':
if (iInsert > 0)
{
strText = strText.Substring(0, iInsert - 1) +
strText.Substring(iInsert);
iInsert -= 1;
}
break;
case '\r':
case '\n':
break;
default:
if (iInsert == strText.Length)
{
strText += kpea.KeyChar;
}
else
{
strText = strText.Substring(0, iInsert) +
kpea.KeyChar +
strText.Substring(iInsert);
}
iInsert++;
break;
}
grfx.TextRenderingHint = TextRenderingHint.AntiAlias;
grfx.DrawString(strText, Font, new SolidBrush(ForeColor),
0, 0, StringFormat.GenericTypographic);
grfx.Dispose();
PositionCaret();
caret.Show();
}
/// <inheritdoc/>
protected override void OnLostKeyboardFocus(KeyboardFocusChangedEventArgs e)
{
base.OnLostKeyboardFocus(e);
caret.Hide();
}