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Hello,
The spreadsheet lost the focus because the hosted Cell's RichTextBox Editor got the focus in order to allow users input.
I can suggest handling LostFocus on the Cell's Editor as well and check in this event where the focus is. I have created a RadSpreadSheet inheritor which demonstrates this idea:
public class MyRadSpreedsheet : RadSpreadsheet
{
protected override void OnLostFocus(EventArgs e)
{
Control ctrl = GetFocusedControl();
if (ctrl!=null && ctrl.Parent == this)
{
foreach (Control control in this.Controls)
{
control.LostFocus -= Control_LostFocus;
control.LostFocus += Control_LostFocus;
}
}
else
{
base.OnLostFocus(e);
}
}
private void Control_LostFocus(object sender, EventArgs e)
{
Control ctrl = GetFocusedControl();
if (!ContainsSpread(ctrl))
{
this.OnLostFocus(e);
}
}
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.Winapi)]
internal static extern IntPtr GetFocus();
private Control GetFocusedControl()
{
Control focusedControl = null;
IntPtr focusedHandle = GetFocus();
if (focusedHandle != IntPtr.Zero)
focusedControl = Control.FromHandle(focusedHandle);
return focusedControl;
}
private bool ContainsSpread(Control control)
{
if(control == null)
{
return false;
}
if(control == this)
{
return true;
}
foreach(Control ctr in control.Controls)
{
if(ContainsSpread(ctr))
{
return true;
}
}
return false;
}
}We will discuss this case in the team and maybe will consider to include a better way to handle it.
Regards,
Peter
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