keep dropDown-menu open while typing

Hi all,

I need a multicolumn-DropDown component, which can be droppedDown while typing.
I have tried to use the multicolumn dropDown component and the controlDropDown where I inserted a stringgrind.

I'm not able to keep it dropped down while typing. I can keep a normal Combobox open by sending a CB_SHOWDROPDOWN message to the component on keyPress, but this is not working with the TMS-components.

Any solution?

TAdvMultiColumnDropDown behaves as a TComboBox with style csDropDownList.
You can type values while the dropdown remains open and it will select the matching item (if it exists)

I cannot see a problem that the dropdown would close from just typing characters.