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How to convert metafile to bitmap Kannan Kalyanaraman18-Oct-01 4:35 Kannan Kalyanaraman 18-Oct-01 4:35  Hi, I need to convert a WMF (Windows Meta File) to Bitmap format. I would be grateful, if someone can throw some light on this. cheers kannan Re: How to convert metafile to bitmap #realJSOP18-Oct-01 4:44 #realJSOP 18-Oct-01 4:44  I would draw it to a window and then create a bitap from the contents of the window. To hell with those thin-skinned pillow-biters. - Me, 10/03/2001 Re: How to convert metafile to bitmap Kannan Kalyanaraman18-Oct-01 5:58 Kannan Kalyanaraman 18-Oct-01 5:58  Hi, thanks for replying. cheers kannan Timer function preempted 18-Oct-01 4:25 18-Oct-01 4:25  WindowsNT 4.0, 2 CPU system, Visual C++ 6.0 I have a timer in a view going off every 5 seconds, and it removes items from a CObList and processes them one at a time. Meanwhile, I have a worker thread (thread 2) which is creating the objects to be put in the CObList. After it creates a new object, it does a PostMessage back to the view with a pointer to the newly created object. Back in the view (thread 1), the message handler for this message takes the new object and adds it to the CObList. Then when the timer goes off, it removes this new object from the CObList and processes it (as stated earlier). Since the timer function is adding objects to the same list that the message handler function is removing them from, I set a lock flag before adding/removing and remove it after the add/removal is completed. The problem is that after several of these objects have been processed (but it's not a fixed number of times), in the middle of the timer function the program execution jumps to the message handler function. Since the lock for the timer function has been set, the message function is unable to obtain the lock and so it can't properly process the message. If I try to resend the message (do another PostMessage with the received message) then the program immediately handles the new message without returning to the timer function, effectively just spinning over and over in the message function. I have tried posting the message to the mainframe instead of the view, and the same thing happens. I have verified using GetCurrentThreadId() that the timer function and message handler function are in the same thread, and that the thread that does the PostMessage is in a different thread. I have verified that the timer function gets preempted by adding TRACE statements, and also by setting a member variable to different values at different points in the program. How is it possible that in the middle of a function, the program execution jumps to a message handler? I thought that this wasn't supposed to happen, and can't figure out what to do about it. Help! Thanks. Re: Timer function preempted Ravi Bhavnani18-Oct-01 4:33 Ravi Bhavnani 18-Oct-01 4:33  > ... I set a lock flag before adding/removing Is this a simple boolean variable? If so, this mechanism is error prone as thread1 may set it to true after the view thread has read it as false. /ravi "There is always one more bug..." http://www.ravib.com ravib@ravib.com Re: Timer function preempted Tomasz Sowinski18-Oct-01 4:35 Tomasz Sowinski 18-Oct-01 4:35  I have verified using GetCurrentThreadId() that the timer function and message handler function are in the same thread OK - this leaves only one possibility. One of statements in the timer function causes some messages to be sent to window, and handler fires. Put the breakpoint in message handler and check the stack when it happens - probably you'll see timer function somewhere below. Tomasz Sowinski -- http://www.shooltz.com Re: Timer function preempted 18-Oct-01 5:34 18-Oct-01 5:34  I posted the original problem. Thanks to everyone who had suggestions, after struggling with this for two days, of course I finally figured it out shortly after I posted this message to the board. In my timer function I had an assert similar to this: ASSERT(pointer1 == pointer2); when this assertion fails (as it does only sometimes), the program execution jumps from the timer function to the message handler function, and does this before it notifies me of a failed assertion. I don't really understand that, but by fixing the problem that was causing the ASSERT failure, I stopped my original problem from happening any more. Something about the ASSERT must allow it to go read the message queue. Thanks again. Determining if a file is running billb211218-Oct-01 4:02 billb2112 18-Oct-01 4:02  I'm moving some 16-bit Windows code over to 32-bit and one function that is giving me problems is a function that determines if a given filename is executing. More specifically, this program updates executables and DLLs from the network and before it performs a file copy, it calls a function called ProgramRunning(szFileName). Using TASKENTRY (which doesn't exist in 32-bit land) they enumerate the running processes and see if the filename passed in is in the tasklist. Is there anyway to do something like this in 32-bit? It's easy if you have a process handle, but all I have is a damn filename. Thanks, Bill http://www.ratebeer.com Re: Determining if a file is running Tomasz Sowinski18-Oct-01 4:08 Tomasz Sowinski 18-Oct-01 4:08  AFAIK, There's no solution for all 32-bit Windows versions. On Win9x and 2K you can use Process32First/Next. If you need to support NT4, you'll probably have to use EnumProcesses (which is also available on 2K, but not on 9x). Tomasz Sowinski -- http://www.shooltz.com Re: Determining if a file is running billb211218-Oct-01 4:21 billb2112 18-Oct-01 4:21  Process32First/Next were exactly what I was looking for. I'm about 99% certain that we'll never be running on NT4 (it's an inhouse application) so this should work perfectly. Thanks so much! Bill http://www.ratebeer.com Re: Determining if a file is running Jörgen Sigvardsson18-Oct-01 4:11 Jörgen Sigvardsson 18-Oct-01 4:11  HOWTO: Enumerate Applications in Win32 KB: Q175030 I think that will answer your question(s). Simple Console Question. The_Server18-Oct-01 3:54 The_Server 18-Oct-01 3:54  Hi, All! ======== Does anyone know how can I change the caption of my API console application ? Thanks. BTW: come to #CodeProject on DalNet (mIRC) Re: Simple Console Question. Tomasz Sowinski18-Oct-01 3:59 Tomasz Sowinski 18-Oct-01 3:59  SetConsoleTitle? Tomasz Sowinski -- http://www.shooltz.com Delete File Fails Michael Martin18-Oct-01 3:53 Michael Martin 18-Oct-01 3:53  I posted earlier this week about a problem I had where I could delete files but not remove a directory. Someone mentioned they once had a similar problem which was due to a shortcut existing that referenced the directory. As it happened I had three on my Desktop which were to be deleted in the next step of the program. I have changed to order to delete the shortcuts from the Desktop. This is successful. Now when I try to delete the files with ::DeleteFile() or CFile::Remove() it fails. The return value from ::GetLastError() after ::DeleteFile() is ACCESS_DENIED. This is strange as earlier this week I could delete these files. I am running Windows 2000 Professional SP2 VC++ 6 SP5. The files I am trying to delete were added by me to a directory that I created. They are icons and batch files that are (I am positive) not in use. Anyone have any idea what the problem could be. Michael Martin Pegasystems Pty Ltd Australia martm@pegasystems.com +61 413-004-018 "Don't belong. Never join. Think for yourself. Peace" - Victor Stone Re: Delete File Fails Tomasz Sowinski18-Oct-01 3:57 Tomasz Sowinski 18-Oct-01 3:57  Did you try SHFileOperation? You could delete directory with files in one step. Tomasz Sowinski -- http://www.shooltz.com Re: Delete File Fails Michael Martin18-Oct-01 4:07 Michael Martin 18-Oct-01 4:07  No I haven't. Will give it a go in the morning. Michael Martin Pegasystems Pty Ltd Australia martm@pegasystems.com +61 413-004-018 "Don't belong. Never join. Think for yourself. Peace" - Victor Stone Getting floppy drive info Brigg Thorp18-Oct-01 3:10 Brigg Thorp 18-Oct-01 3:10  I would like to get the physical drive characteristics of the floppy drive in Win32. I am familiar with the diskinfo_t structure that was used for old DOS programs, but I am unfamiliar with how to do this in Windows. Does anyone have any idea on how to do this? Thanks... Brigg Thorp Software Engineer Timex Corporation Re: Getting floppy drive info Jon Hulatt18-Oct-01 4:58 Jon Hulatt 18-Oct-01 4:58  See MSDN: Platform SDK\WIndows base services\hardware\device input and output\ using device input and output control\ That contains all the info you need. Sorry to dissapoint you all with my lack of a witty or poignant signature. MFC DAO - Portable? Simon Walton18-Oct-01 2:36 Simon Walton 18-Oct-01 2:36  I'm writing an application using MFC, and i'm planning on using DAO for the main data source and serialisation for all the options etc. I was wondering if it would be possible to get the application to work on any machine? Could the MS Jet engine (i'm assuming DAO uses the jet engine) be installed on a machine that doesn't have it? Or could the neccesary functions be packed into the exe? Thanks guys. Re: MFC DAO - Portable? Christian Graus18-Oct-01 3:03 Christian Graus 18-Oct-01 3:03  Just install MDAC, and you can use DAO or ADO. There is an extra download for Jet, I'm not sure if it's needed now or not. Christian Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: MFC DAO - Portable? kumar_p318-Oct-01 3:04 kumar_p3 18-Oct-01 3:04  Hi , The MS Jet Engine has to be installed.(Although most systems have it, it may not be the exact version u need) They cannot be packed with ur exe. But since the installation package 'mdac_type.exe' is freely distrubutable, u can have it packaged as a secondary installation package along with our own installation. Best of Luck. Kumar Re: MFC DAO - Portable? Simon Walton18-Oct-01 7:20 Simon Walton 18-Oct-01 7:20  Thanks for the advice guys! I'll package the MDAC setup with my application. Re: MFC DAO - Portable? Carlos Antollini18-Oct-01 8:05 Carlos Antollini 18-Oct-01 8:05  If you are using the installshield, you only need to inlude the DAO Object, but in other case you need to add the following files to your seup. dao360.dll depends of the version AsyFilt.dll msjint40.dll depends of the version msjter40.dll depends of the version msvcrt.dll msvcrt40.dll stdole2.tlb comcat.dll oleaut32.dll olepro32.dll Note: if you are using the 3.5 version these are the files dao35.dll dao2535.tlb msjint35.dll msjter35.dll + the rest of the files of the previuos list. only I need to add that some files must be register, but that is your homework... -I can say you... SSShhhh bob!!! Cheers!!!! Carlos Antollini. Reusing a std::vector<> object after performing an erase() Franz Klein18-Oct-01 2:36 Franz Klein 18-Oct-01 2:36  I am using a std::vector object to contain data that I need when creating and displaying a graph. Initially the std::vector object is empty when created. As information is retrieved it is push_back() onto the std::vector. The std::vector object is declared in a CDocument object. When a CScrollView is displayed the information is retrieved from the std::vector object. On closure of the CScrollView the std::vector object is erased in CDocument::CanCloseFrame(). The problem lies in reusing the std::vector object after it is erase(). An error occurs when trying to perform a push_back(). The code is as follows: In CDocument - std::vector<edge> m_graphedge; In CDocument::CanCloseFrame() - m_graphedge.erase(m_graphedge.begin(), m_graphedge.end()); In CDocument::CreateGraph() - m_graphedge.push_back(anedge); //works for the first time before it is erased in CanCloseFrame(); //but doesn't work after m_graphedge.erase() is called. //HELP ??? Anybody with a solution? Thank you Franz Klein Re: Reusing a std::vector<> object after performing an erase() Christian Graus18-Oct-01 3:07 Christian Graus 18-Oct-01 3:07  I'm not sure why this would compile - erase is supposed to take an iterator or an iterator pair. Are you sure you don't want to call m_graphedge.clear() ? Christian This space for rent.

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