Home > Cannot Create > Cannot Create An Mfc Thread During Dll Startup

Cannot Create An Mfc Thread During Dll Startup

This meant that the thread running FindWindow had to SendMessage a WM_GETTEXT message to the window whose handle it had just found via EnumWindows. loop computations } Note that I haven't done anything about dealing with the fact that the startup timeout may be incorrect and the thread is still trying to start; this could My problem: When i show message dialog, user can interact with windows created by main thread (main dialog or its child windows). The generalization, changing the test toif(x % 10 == 0 && PeekMessage(...)) will work if the rows are too short. http://skimwp.org/cannot-create/cannot-create-worker-gc-thread.php

Ignore the existence of these functions. Don't ****ing do this. This is usually because you failed to shut down one or more worker threads. The Thread Solution It is almost always the case that you can use threads to do the job more easily. https://msdn.microsoft.com/en-us/library/h23hktw9.aspx

This requires a more graceful shutdown mechanism. Well, almost. please ... The CreateThread function may succeed even if lpStartAddress points to data, code, or is not accessible.

Here is what I have:[code]void MyClass::OnFileAutopopulate() { if (m_IsAutopopulating){ // kills the child thread if (TerminateThread(m_ThreadHandle, 1)){ m_IsAutopopulating = FALSE; } else perror("Error ending thread"); } else{ // starts the child I've also defined WPARAM of the message to include a flag that indicates if the thread stopped because it stopped normally or stopped because the user cancelled it (which I might This means that the following restrictions hold: During process startup and DLL initialization routines, new threads can be created, but they do not begin execution until DLL initialization is done for Anyway, this post has terrible structure and was written up really quickly caus I'm in a rush atm, if you need more info post here and I'll be glad to help

Shout-Out buymmoservice: TEN NM/HC/Mythic ; Karazhan; Karazhan mount; Mythic Dungeons ; Mythic+ Epiccarry: [EU/US] [H/A] Leveling || Mythic dungeons || The Emerald Nightmare || Jessy.Boosting: Grab your FREE Battle.net Gift Balance, if we don't want to shut down the view, // ... No other work will be done in the thread. This alone is enough reason to throw the code out.

Also, whenever your DLL causes and unhandled exception you'll get a popup window which will let you debug it, if you feed your debugger the PDB file generated by your compiler We appreciate your feedback. The errors I committed were so obvious, and you already mentioned something similar in the article. I use Registered Window Messages, so my code looks like this: static UINT UWM_DO_SOMETHING = ::RegisterWindowMessage(_T("UWM_DO_SOMETHING") _T("")); ON_REGISTERED_MESSAGE(UWM_DO_SOMETHING, OnDoSomething) LRESULT CMyClass::OnDoSomething(WPARAM wParam, LPARAM) { SomethingParametersBlock * b = (SomethingParametersBlock *)wParam;

Bottom line: Calling CreateThread from DllMain is safe (even if not recommended). –IInspectable May 4 at 19:55 add a comment| up vote 5 down vote No. http://stackoverflow.com/questions/16945993/using-mfc-with-qt-modal-dialog-and-main-process Why put a warning sticker over the warning on this product? The GUI has a menu item or other means of saying "Invert it now". I would´t like to usu notifications to UI Thread.

WhenevernewthreadsarecreatedthatusecodeintheDLL,DllMainiscalledwithaReasonForCallofDLL_THREAD_ATTACHtoannouncetotheDLLthatanewthreadisattachingtoit.IfanewthreadiscreatedintheInitInstanceofanMFCRegularDLLorintheDllMainofanyMFCDLLduringDLL_PROCESS_ATTACH,thissecondthreadwillattempttore-entertheDllMain,whichhasnotyetbeenexitedfrominanefforttoannounceDLL_THREAD_ATTACH. this contact form If you have a thread that is blocked on I/O or a synchronization object, you will need to add a timeout mechanism as I have already described. I am only allowed to change the DLL Source. How to convert numbers to currency values?

The only way you can handle this is to post a user-defined message back to the main GUI loop to perform this service for you. Interesting, as in the traditional Chinese curse. Browse other questions tagged winapi dll multithreading or ask your own question. have a peek here Reason: added whitespace Reply With Quote 08-20-2008 #3 object View Profile View Forum Posts Private Message View Articles Private Reputation 5 Join Date Aug 2008 Posts 13 Thanks G/R 0/0 CoreCoins

Thanks, Ghislain ----- Original Message ----- From: "Mark Billingham" To: Sent: Tuesday, April 10, 2001 9:05 PM Subject: Re: WaitForSingleObject times out on thread handle > This is a Pass it as a parent to your dialog and call DoModal. This means that at most one thread at a time is permitted to be executing it.

If this is the proper way could you explain how do you pause threads?

asked 3 years ago viewed 711 times active 3 years ago Linked 6 Qt modal dialog and main process Related 2MFC Control in a Qt Tab Widget2QWinWidget Inside MFC Dialog Not If a security descriptor is not provided, the handle can be used in any function that requires a thread object handle. Add a prototype by hand or place the function before before the call to the thread.: : : : It should be:: : [CODE]: : UINT autopopulateThread(LPVOID lpParameter){: : [/CODE]: : But the MFC library is fairly liberal in using memory allocation, so there is an excellent chance that the next call to the MFC library from any thread will simply stop

Win32 Thread Hamed Mosavi29-Jul-07 10:48 Hamed Mosavi29-Jul-07 10:48 Thanks, mctenner. Windows CE: The lpThreadAttributes parameter must be set to NULL. If your thread needs to take the loader lock, it will wait until the first thread finishes using it. http://skimwp.org/cannot-create/cannot-create-thread-to-manage-tcp-connection.php No files were extracted, and my application crashed...

The content you requested has been removed. it does load the dll when i remove the "if (DllThread == NULL)" a messagebox is poped up the problem is that the thread is not working –Dan Revah Nov 25 winapi dll multithreading share|improve this question asked Nov 6 '09 at 15:22 sold 80131528 add a comment| 4 Answers 4 active oldest votes up vote 10 down vote accepted You shouldn't However this does not work if any static > thread local storage is in use (i.e. _declspec(thread)).

Really Discussions Best Of... But even if it were acceptable, it is still wrong. I might also extend this to a set of enumerated types to communicate back error codes in case the thread decided to terminate because of some problem. Thank you again ThatsAlok.

Good luck. I wish there was some more about thread synchronization, however I found one of the other articles you've written about semaphores. this is MUCH easier than calling ReadProcessMemory() and WriteProcessMemory() all the time. If this function returns, the DWORD return value is used to terminate the thread in an implicit call to the ExitThread function.

There's another, slightly more complex, mechanism for doing a thread shutdown without polling, which I discuss in a later section. Meanwhile, the thread does something apparently innocuous, such as add something to a list box, or, in the example that was posted, calls FindWindow. Right now. There is a caution here: this assumes that the thread will actually terminate "within a reasonable time".

Just doAfxGetMainWnd()->PostMessage(...) and you're done! The code to run the thread is the same.