LCL Interface Redesign Idea
From Lazarus wiki
This is current Idea for the structure of the interface and how it relates to handles
Overview:
- Fork a branch of lazarus/
- Replace TWinControl.Handle with TWinControl.LCLHandle (there should exist no Handle yet)
- Try to get the LCL compiled and maybe the IDE so it doesn't use the (inefficient) .Handle anymore
- Introduce .Handle again, now as WSclass call
- Merge the branches
The change to .Handle will not break existing code.
TWSxxWinControl.CreateHandle Returns a TLCLHandle
TLCLHandle = IInterface; // interfaces as com objects
TxxPrivate = class(TPrivate, TLCLHandle);
TGtkPrivateButton = class(TGtkBin, TLCLHandle);
All TWSxx. methods should be moved to the private class. for instance:
class procedure TWSGtkWinControl.SetText(const AWinControl; const AText: String); var PrivWinControl: TGtkPrivateWinControl; begin PrivWinControl := TGtkPrivateWinControl(AWinControl.LCLHandle); PrivWinControl.SetText(AText); end;
Other possibilities
{$IFDEF X11} TGtkPrivateWidget = class(TGtkPrivate, ILCLHandle, IX11);
then
(AWinControl.LCLHandle as IX11).XID
is possible