JEDI Windows API
Things you should know about exceptions.
14 Apr
Posted by: Christian Wimmer in: Common, JEDI Windows Security Code Lib
I found this very interesting article about exceptions. You should read “Ten Things (or more) You Might Not Know About Exception Handling in Delphi” (or get it from Google Cache) and learn why exception inheritance ist important. The same reason applies to the exceptions of the JWSCL. EJwsclSecurityException is the main exception inherited from generic Exception class. All the other exception are inherited from EJwsclSecurityException or another JWSCL exception. The following partial tree shows the inheritance of JWSCL exception classes:
Exception (Delphi)
- EJwsclSecurityException (JwsclExceptions.pas)
So if you are going to catch EJwsclSecurityException and e.g. EJwsclAccessDenied you have to catch the second exception first because EJwsclSecurityException would also catch EJwsclAccessDenied.
WRONG order:
-
try
-
…
-
except
-
on E1 : EJwsclSecurityException do
-
…
-
on E2 : EJwsclAccessDenied do
-
…
-
end;
CORRECT order:
-
try
-
…
-
except
-
on E1 : EJwsclAccessDenied do
-
…
-
on E2 : EJwsclSecurityException do
-
…
-
end;
convert this post to pdf.Search
Paypal donation (EUR)
Categories
Most Viewed
- New threads do not automatically impersonate themselves. - 2,449 views
- A rant concerning Unicode and Delphi - 2,022 views
- Run a program elevated. - 1,688 views
- The case of ShellExecute, ShellExecuteEx, CreateProcess and osk.exe (Update) - 1,514 views
- CreateProcess in full glory - 1,451 views
- Winlogon Notification Package - 1,388 views
- The Delphi JEDI Project needs your help - 1,255 views
- Roadmap of JWA & JWSCL - 1,089 views
- RunAsSYS 1.0 preview [update#1] - 1,085 views
- Translucent Windows with Aero - 1,084 views
Tags
ACL callback COM Conversion CreateProcess DACL Delphi dialog DidYouKnow DLL documentation Download elevation factory file Handle header HowTo interface JWA JWSCL Kernel Microsoft KillProcess Laptop mail mailinglist manifest permission Privilege Process ProcessExplorer RunEl Russinovich Service Setup Sid TerminateProcess Theme Thread Token UAC user Vista Window WindowsRecent Posts
Recent Comments
- I am told that size doesn’t matter (anymore)! at Assarbad’s blog on RunAsSYS 1.0 preview [update#1]
- So you want to write a service… by JEDI Windows API on RunAsSYS 1.0 preview [update#1]
- Linco on Calculating Binary Hashes using TJwFileStreamEx
- NeutralGeneral on Calculating Binary Hashes using TJwFileStreamEx
- Ilse on Calculating Binary Hashes using TJwFileStreamEx
2 Responses
Jim McKeeth
14|Apr|2008 1The link to “Ten Things (or more) You Might Not Know About Exception Handling in Delphi” isn’t working. It appears the destination has some WordPress configuration file issues, or their database changed. If you can contact them and let them know you might want to.
Christian Wimmer
14|Apr|2008 2Use Google Cache to read the content .
Leave a reply