[Lazarus] Package main source on project lpr
mschnell at lumino.de
Wed Jul 3 09:19:11 CEST 2013
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
- Postmessage -> Procedure .... message
I have a testing program that checks if those decently work.
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