Zitat von Zaher Dirkey <[email protected]>:
2009/12/22 Mattias Gärtner <[email protected]>:
Zitat von Graeme Geldenhuys <[email protected]>:
Mattias Gärtner wrote:
csOpaque:
- the control is treated as transparent
- but it does not make a control transparent
This makes no sense. :-) It's told to be transparent but isn't really
transparent because it still paints the background with clBtnFace.
I will try again with other words:
Let's assume you create a non rectangular control. Then you must tell this
the LCL by removing csOpaque. Normally when the user clicks with the mouse
on a pixel inside the rectangular area of a control the LCL will send the
mouse event to this control. Without csOpaque it must change this check.
Same when clipping child controls.
You need a new control TLayout derived from TGraphicControl but have
new component state csSomthing to bypass mouse action at runtime and
leave it other controls, but the real problem it must have child
controls and that need hard coding make many new bugs.
http://www.lazarus.freepascal.org/index.php/topic,4820.0.html
The stuff there is somewhat outdated.
TWincontrols and TControls are not separated anymore.
You can write your own layout manager, but at the moment it is
somewhat awkward. When the new auto size stuff is finished writing
layout managers will be easier. Maybe we can even put the default
layout code to another unit, saving 1-2% of exe size.
Mattias
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