Andrew Brunner ha scritto:
I would be interested in a reply to this. Under windows you need this to go
along with createparams();
Otherwise you can try to get along with Get/SetWindowLong right? But what
about on OSes other than windows?
From a quick look to documentation, RecreateWnd is just a dangerous
hack/workaround to overcome some Windows bugs/inadequacies.
In Windows it's impossible to change some properties of a window, such as:
* Changing the border style.
* Changing the CharCase, HideSelection or OEMConvert property of an
edit control.
* Changing the Alignment or ScrollBars property of a memo control.
* Changing the Sorted or Style property of a listbox control.
* Changing the Sorted or Style property of a listbox control.
* Changing the Alignment property of a listbox control.
* Changing the Ctl3D appearance of a checkbox control.
and the only thing that can be done is to destroy it, and then recreate
it with new properties. It's just one of the 65000-plus known bugs of
Windows. This is not only unneeded, but not even thought of in other
OS's. Only in Redmond such a thing can be considered "normal".
The call releases the old handle, and creates a new one. Meaning that if
there are other widgets, siblings or descendants, which have registered
the old handle (for anchoring, z-order or whatever), they will be left
with an invalid handle.
With honest to God OS's you may use the Invalidate method, to force a
repaint of the window, but that's usually not required, because the LCL
will take care of that automatically.
Giuliano
_________________________________________________________________
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject
archives at http://www.lazarus.freepascal.org/mailarchives
