On 07/02/2013 04:14 PM, Fabio Luis Girardi wrote:
Hi to everybody!
A friend are working in redesigning all PascalSCADA packages, with the
main target to remove all graphical dependencies, to make it usable on
console applications and service applications.
To stay compatible with the existing stuff you need to create a new
dedicated value for the "LCLWidgetType" macro that is selectable in the
Project Options (using then new "Additions and Overrides" menu.
I once tried to do that (and failed, because the infrastructure is not
done appropriately). Right now
- the LCL provides the normal event queue that is necessary for the
normal Object pascal "event driven programming" paradigm
- this is not done in a centralized way, but each "LCLWidgetType" has
it's own code to implement this
- on top of this, there is another event queue done in the RTL that
needs to be synchronized with the GUI event queue
The things that need to get working in a decent non-GUI LCLWidgetType
include:
- TTimer
- TThread.Synchronize
- TThread.Queue
- Application.QueuAsyncCall
- Postmessage -> Procedure .... message
I have a testing program that checks if those decently work.
-Michael
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