I need to follow up on my own question, having done some more
experimenting. I discovered that although the menu system locks up when
I do a "Run" from within the Lazarus environment (Version 0.9.10 beta),
if I get out of the IDE and double click on the exe file that was
produced it works fine. I still don't know if the reason Lazarus
produces bad results is because of a faulty configuration on my part or
a genuine bug. The error message I get when I stop the program is
"Project raised external exception class 'Externals: SIGSEGV'".
I tried stepping through the program with the debugger. What I got were
various messages saying Lazarus couldn't find different inc files. It
gave me an opportunity to supply my own path, so after searching around
I provided a path (C:\lazarus\fpcsrc\rtl\inc\...), after which it kept
working.
After exiting the program I tried finding where I could set the path and
found Compiler Options under the Project menu, which had a place to give
paths to different kinds of files. I set the path as above and got this
message when the program compiled again:
File C:\lazarus\fpcsrc\rtl\inc\genstr.inc is newer than Release PPU
file, C:\lazarus\pp\units\i386-win32\rtl\strings.ppu
along with a similar message for all the other inc files. I have no
idea what this really means, but it makes me wonder what version of FPC
Lazarus is using. (I have a separate installed copy of FPC, but Lazarus
apparently has its own built in with no apparent way to redirect it to a
different version.) Despite the messages, the program went ahead and
built, with the same flaw as before.
So that is the state of my experimentation.
David Chandler wrote:
I created a bare-bones do-nothing test menu and double clicked each
menu option to create an empty procedure in response to a mouse
click. If I have no submenus, everything seems to work. But if I add
submenus, the menu system locks up.
One of my questions is, do I need to create click-handling procedures
for the menu items whose only function is to open a submenu? The
system locks up whether I create these procedures or not, but I can't
imagine what I would put in such a procedure if it were required. Is
there some other property I need to set to get the menu system to
work? Is there a tutorial or documentation (short of reading the
source code) that leads me through this learning process? (I feel
awkward having to rely on the mailing list for questions I would
normally be able to answer for myself reading a book or online
document. I have been using Mastering Delphi 6, by the way, on the
assumption that the Lazarus IDE is roughly equivalent.)
--David Chandler
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