Forms loosing focus with formStyle = bsSingle
lazarus / 31-LCL

----------------------------------------------------------------------
boznz · 2015-10-09 18:59

Hi

First and foremost, this is the best free software I have worked with,
ever 

I am currently writing a large factory production system with Lazarus
and MySQL and Win32. It is currently 70+ forms and growing (screenshot
attached). I have done previous big systems with Delphi XE2 and found
the transition almost seemelss to become productive, I now prefer
lazarus over delphi and glad I made the switch. just the fact I can
right-click and get every declaration of every unit alone is amazing!

One annoyance I did have was I was having problems with child forms
loosing focus when you click away from the application. When you
returned to the application the main form would show but the child
form remained hidden until the form was clicked on. It has been
driving me and the client nuts on an otherwise flawless looking
program.

I had tried every combination of popupparent, dabbled with the other
widgetset settings (compiled but nothing shows!) and just assumed it
was because I was embedding forms. The bottom line is I had been
setting a lot of forms to formstyle=bssingle, changing them to
bsSizeable or bddialog has completely fixed the problem.

Hopefully it will help someone else.

Note: the program will eventually become open source and I will put it
up on my website at rodyne.com in the next month or so.

Another $$ donation on its way to just say keep up the good work..

----------------------------------------------------------------------
balazsszekely · 2015-10-09 19:13

You should make a small demo project where the issue is reproducible.
Please also specify lazarus/fpc version and your OS.

----------------------------------------------------------------------
Handoko · 2015-10-09 19:25

Welcome boznz. I have no experience about your issue, but I recently
heard some discussions that I think might be helpful:
http://forum.lazarus.freepascal.org/index.php/topic,29822.0.html
http://forum.lazarus.freepascal.org/index.php/topic,29764.0.html

----------------------------------------------------------------------
boznz · 2015-10-10 08:49

Thanks for the responses guys

No issue now, my work-around has fixed the problem for me and I hope
will help someone else possibly having similar issues.

I am compiling on Lazarus 1.4.0 running under Window 7 using the
default win32 widgetset. The project has a main form with menus on the
left and embeds different child forms in a panel on the right when an
option is clicked. The main form is called by the splash form on start
and the embedded forms then call other child forms etc which have the
problem. This is my preferred way to build complex programs so I
needed it to all work if I was to migrate from delphi, and it does

Time is my enemy at the moment so no demo program for now,  I will
simply avoid formstyle=fssingle for the rest of this project.

I will publish the whole project source code and documentation on my
web site (rodyne.com) in a month or two and I will come back and
review this problem then with the latest compiler. If it is still
reproducible I will try and dig deeper for a fix and let you know the
outcome and the code to reproduce it.

Cheers

Boz