[Lazarus] Dispatching GUI messages from background threads

[Paul Ishenin]

David W Noon wrote:

> The only function like that I could find was SimpleSendMessage(), which
> produced the same result as Dispatch() and DeliverMessage(), but without
> supplying any message data. In which unit is SendMessage() defined?

add LCLIntf unit to your uses section and you'll get SendMessage and 
PostMessage.

Best regards,
Paul Ishenin.