Board index » delphi » How to find which component causes system crash?

Alexander Kornacki

Delphi Developer
Mon, 22 Mar 2004 16:21:15 GMT

How to find which component causes system crash?

Hi all,

I have an application designed on Win98, now I need to put it on NT
machine. But when I launch it there, it just crashes, saying nothing,
just Dr Watson appears...
There's pretty little info what caused the crash, I could just insert
some messages in my program and track it down a little way. I figured
that main form's OnCreate handler doesn't take control, so I thought
that there's something wrong with the form itself. Deleting components
in several steps, I cleaned the form altogether, now I can run it... How
can I figure exactly what component caused the crash? Repeat the
procedure deleting components one by one? Or maybe there is something
better?

TIA

Alex.

 
BlueYonde

Delphi Developer
Mon, 22 Mar 2004 19:35:35 GMT

Re:How to find which component causes system crash?


Alexander

The most sensible root is to load DELPHI on the OS in question and debug
from there.

A bit long winded but must be quicker than removing stuff and recompiling
etc.

Regards
Andrew Wood

Quote
"Alexander Kornacki" <ac...@pronet.kiev.ua> wrote in message

news:3BBC1BFB.481D5092@pronet.kiev.ua...
Quote
> Hi all,

> I have an application designed on Win98, now I need to put it on NT
> machine. But when I launch it there, it just crashes, saying nothing,
> just Dr Watson appears...
> There's pretty little info what caused the crash, I could just insert
> some messages in my program and track it down a little way. I figured
> that main form's OnCreate handler doesn't take control, so I thought
> that there's something wrong with the form itself. Deleting components
> in several steps, I cleaned the form altogether, now I can run it... How
> can I figure exactly what component caused the crash? Repeat the
> procedure deleting components one by one? Or maybe there is something
> better?

> TIA

> Alex.

Simon Moscro

Delphi Developer
Mon, 22 Mar 2004 23:56:29 GMT

Re:How to find which component causes system crash?


Alexander

I dont know if you've tried this but... Have a look at your project options
and on the compiler page check the 'Use Debug DCUs' box. Put a breakpoint on
the first line of your project source and step into the application ..
tracing down until you reach the line that cause the crash--sometimes a
painful and slow procedure - but you'll probably find what you're looking
for.

- Si

Quote
"Alexander Kornacki" <ac...@pronet.kiev.ua> wrote in message

news:3BBC1BFB.481D5092@pronet.kiev.ua...
Quote
> Hi all,

> I have an application designed on Win98, now I need to put it on NT
> machine. But when I launch it there, it just crashes, saying nothing,
> just Dr Watson appears...
> There's pretty little info what caused the crash, I could just insert
> some messages in my program and track it down a little way. I figured
> that main form's OnCreate handler doesn't take control, so I thought
> that there's something wrong with the form itself. Deleting components
> in several steps, I cleaned the form altogether, now I can run it... How
> can I figure exactly what component caused the crash? Repeat the
> procedure deleting components one by one? Or maybe there is something
> better?

> TIA

> Alex.

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