On 03/14/2011 12:58 PM, Marc Weustink wrote:
brian wrote:
I have a fairly simple Lazarus program, just a few edit boxes on a form
to enter some filenames and then it's doing a bunch of simple
manipulations on a text file.
Using Linux Mint 9 (a fork from Ubuntu), Free Pascal 2.4.0 and Lazarus
0.9.28.2, all 64-bit versions, when I run the program from konsole (run
from within GNOME) I get the following messages, before the program
(appears to?) run correctly
[WARNING] Out of OEM specific VK codes, changing to unassigned
[WARNING] Out of unassigned VK codes, assigning $FF
Can anyone tell me what's going on? The only things I can find about VK
codes pertain to Windows.
Since the LCL is compatible with the Delphi VCL, lazarus needed to
mimic the virtual keycodes used in OnKeyDown/Press/Up on other
platforms than windows. To generate code compilable for different
platforms, those virtual codes need to be the same for every platform.
For the X based GTK1/2 some logic is added to map the keyboard layout
reported by the X server to the Virtual keycodes.
Modern distros nowadays tend to provide one keyboard map fitting most
of the available keyboards. This leads a map with over the 150
possible, sometimes exotic keys.
From a software pov. the LCL cannot tell what kind of keyboard the
user has plugged in, so it maps all keys reported by the X server.
Since the number of free to choose virtual keycodes is limited, the
gtk1/2 logic runs out of codes for some of the exotic keys.
So if you happen to have a keyboard with say functionkeys F24-F48 and
those keys are mapped last by the X server, you may have problems in
Lazarus when detecting KeyUp/Press/Down.
Thanks for the explanation, Marc. I'm relatively new to Lazarus,
having programmed with Delphi/Windows since the Early Experience
version, but I'd not seen this message before. I just have the
standard 105 key USA keyboard here, so I wonder what has changed with
the keys reported by the X server? I've written something like 20-30
small utility programs for my own use since I switched to Linux on
retirement, and as above, it's the first time I've seen the message.
I guess I just wait for the new releases to work their way through the
packaging process and not worry about it further. :)
Thanks again,
Brian.
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