How can I force a FireMonkey TComboEdit to show its drop down programatically

Question

I have a TComboEdit in a FireMonkey application.

In VCL I could do something like this:

  SendMessage(myComboEdit.Handle, CB_SHOWDROPDOWN, 1, 0);

Of course, messaging in FMX works differently than in VCL so this trick appears not to work under FMX. (i.e., it's not exposed to us).

How can I coax my TCombiEdit to show the drop down?

Answer 1

To show the dropdown of a TComboEdit control you can use the DropDown method like this

 ComboEdit1.DropDown;

or send a PM_DROPDOWN message using the SendMessage method of the model.

 ComboEdit1.Model.SendMessage(PM_DROPDOWN);