May be you can help me.
I use a Custom Renderer based on GridCellRendererBase.
The Control which takes the focus
has overriden then ProcessCmdKey method
When it is placed standalone on a Form
it works fine.
When it is activated from Renderer
if I press the Keys.Back (this is my problem) and I leave it to base.ProcessCmdKey (under certain circumstances) then
I receive an ArgumentException from system.windows.forms.dll.
''-1'' is not a valid value for ''start''.
The GridSelectionMode is set to .One.
but it does not influense.
Do you have any good advice ?