Exception EOSError in model at System Error. Code: Invalid window handle. It doesn’t happen every time I close. Upgraded to Move a few columns around on a MariaDB database on a Synology NAS When done with editing data simply closed. System Error. Code: Invalid window handle # Closed. jhansen31 opened this Issue on Jan 1 ยท 3 comments.

Author: Dum Viran
Country: Yemen
Language: English (Spanish)
Genre: Relationship
Published (Last): 18 May 2006
Pages: 398
PDF File Size: 16.76 Mb
ePub File Size: 9.81 Mb
ISBN: 737-1-55987-714-9
Downloads: 95252
Price: Free* [*Free Regsitration Required]
Uploader: Donris

This visual toolkit allows creating secure, managed, isolated, deployable and version-neutral plug-ins for Outlook Express and Windows Mail.

How to correct Error Code L Invalid Window Handle – Microsoft Community

LU – yes, although the OnTerminate mechanism itself employs Synchronize so isn’t really an alternative to it, just a “built in” Synchronize’d completion event.

Overview This technology is srror available for our custom development services only. VS – ; VB.

All seems to go well until I exit the application and get this error using madExcept exceptions handler “System Error. Apr 26 ’16 at Embarcadero Delphi XE2 – Delphi Overview Take invaalid tour Customers say This technology is now available for our custom development system error code 1400 invalid window handle only.

Depending on the situation this can be solved with Synchronizeposting messages async PostMessage or synchronized SendMessage.

Similarly changing errod properties of a control can trigger the VCL to attempt to recreate the window for that control, destroying the current one in the process. If I check the listview there is something very odd with it after the thread ends, sometimes the listview isn’t even visible, or the added items aren’t clickable. Get every solution instantly with premium.


You have posted a lot of code but not the key, relevant part. TObject ; begin adxcoSSheet: Thank you for letting us know. So you could, for example, pass a window handle to a form or control or anything with a window handle to your HTTP async thread during initialisation, identifying a VCL window that wishes to receive the “request complete” or other notifications from the thread.

The golden rule with threading is to not touch the GUI from another thread. Outlook Express plug-ins Versions: You won’t necessarily see an explicit creation of a control that marks the creation of the underlying window handle. Based on the Add-in Express for Office core, it is designed for building custom-tailored Office add-ins with far less coding than you usually have to do.

Create Self ; FThread. A clean boot helps to verify if any third party application services or startup item is causing this issue. The only thing I managed to find is an item added to the TaskPanes collection of the add-in module. This site uses cookies to deliver our services and to show you system error code 1400 invalid window handle ads and job listings.

Experts Exchange Solution brought to you by Enjoy your complimentary solution view. Add-in Express for Internet Explorer and.

Don’t just system error code 1400 invalid window handle that this solves the problem – altogether better if you come to understand why this solves the problem. Backup failed due to Error Code L invalid window handle; how do I fix this? By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Delphi 5 – XE. System error code 1400 invalid window handle, ; VB.


Andrei Smolin Add-in Express team Posts: Posted 12 Apr, After the trouble shooting steps, refer to Step 3 from clean boot link to set the computer back to normal start up mode. This method is being executed in the context of the TMySynHTTPAsync thread and based on the behaviour you are describing – particularly the fact that Synchronize resolves your problem – it is highly likely that some activity in that event handler is creating a window handle.

Help!!! What is invalid Error code 1400 invalid window handle

Contact us to request a quote. Posted winvow Apr, It should be fairly apparent that these mechanisms are highly vulnerable to problems that can arise when VCL methods are called by threads other than the VCL thread.

Thank you for the system error code 1400 invalid window handle explanation, much appreciated. If this doesn’t help to solve the problem, I’d need to have a shortened edition of your project if it is possible.

This is why you will often here it said that ” the VCL is not thread-safe “. Vijay Korupolu M Replied on November 27, Hence your xystem is solved.

Add OriginalFilename ; SubItems.

Custom solutions for Microsoft Office. By using this site, you accept the Terms of Use and Rules of Participation. Use this visual tool to create thread-safe, secure, isolated, deployable and context-sensitive Internet Explorer add-ons.

Tell us about your experience with our site.

– invalid window handle

All access to the VCL must be synchronized from a thread. Anytime your threads need to call clde the main thread the VCL is not thread safe they need to use Synchronize.


This is a fundamental of Windows, not Delphi.