CODEWITHSUNDEEP
windowsmodal-dialogexitmessagebox
kambi
kambi

Reputation: 3433

MessageBox prevents exiting from application

Our application loads 3rd party DLLs that sometimes pops MessageBoxes. We've notices that sometimes we can't just use exit(0) when there's an open MessageBox.

How can we still force an exist in such a case?

Thanks

Upvotes: 0

Views: 186

Answers (2)

valdo
valdo

Reputation: 12943

Seems like your ugly DLL calls MessageBox (or whatever) from within DLL_THREAD_DETACH or DLL_PROCESS_DETACH.

If this happens in the same thread (i.e. the thread the calls exit) you may try to call PostQuitMessage right before the application exit. This should abort any message loop. If this happens in another thread - you may call PostThreadMessage.

There's also an option to intercept calls to Win32 API functions by hooking the appropriate module (Exe/Dll) import table. Invented by J.Richter (if I remember correctly). http://www.player.idv.tw/prog/index.php/APIHook

Upvotes: 1

Adriano Repetti
Adriano Repetti

Reputation: 67118

If you want to use brute force you may call the TerminateProcess() function. I'm not sure this is a good idea, you may want to detect if there's an open message box and send a close to it (for example using a FindWindow())

Take a look at MSDN.

Upvotes: 0

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