C / C++ / MFC

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Detecting Mic atimpoo10-Jul-06 20:28 atimpoo 10-Jul-06 20:28  How can i find whether a microphone is connected or not in my system? Thanks, Poornima Re: Detecting Mic Hamid_RT10-Jul-06 20:34 Hamid_RT 10-Jul-06 20:34  im not sure see Here[^] maybe it is some helpful to you whitesky how to find the value of a macro? George_George10-Jul-06 20:15 George_George 10-Jul-06 20:15  Hello everyone, I am wondering what is the easiest and safest way to find the value of a macro? For example, if I, #define FOO "value1" The value of FOO I can get is "value1" and if then I, #undef FOO #define FOO "value2", then the value of FOO I can get is "value2". thanks in advance, George Re: how to find the value of a macro? Code_Zombie10-Jul-06 21:00 Code_Zombie 10-Jul-06 21:00  Hi, I didnt get the question,basically the macros are replaced by the preprocessor,so there is nothing like finding the value at the runtime. Hope this helps. Thanks Re: how to find the value of a macro? George_George10-Jul-06 21:14 George_George 10-Jul-06 21:14  Thank you Code_Zombie! Do you mean we can only get the value during compile time other than during runtime? My question is, during compile time, how can we (developer, other than compiler itself) know the exact value of a specific macro -- which compiler is using -- to avoid mis-defining the value of a macro? (I know compiler knows the value, but during normal compile stage, it is not exposed to the end user which value is defined to a specific macro, so there may be mis-defined macro value.) regards, George About CMutex And CSingleLock Diglu10-Jul-06 20:11 Diglu 10-Jul-06 20:11  I'm using CSingleLock , When one thread lock an object, and other thread wants to lock that object at that time , The second thread will wait for unlocking by the 1st thread or it just skip that locking code. If it need to wait, It will automatically wait or have to give code to wait ? -------------------------------------------------------------------------- CMutex g_m1; CSingleLock lock1(&g_m1) - - - - - - - -- - - - - - - - - - - - - - - - - - - - if (lock1.Lock()) { m_LockStatus = "Got Lock"; UpdateData(FALSE); } else { m_LockStatus = "Failed"; UpdateData(FALSE); } } ----------------------------------------------------------------------------- Thanks to all. Re: About CMutex And CSingleLock FarPointer10-Jul-06 23:46 FarPointer 10-Jul-06 23:46  you may try :- WaitForSingleObject Regards, FarPointer Blog:FARPOINTER How to get list of printer names Vinod Moorkkan10-Jul-06 20:10 Vinod Moorkkan 10-Jul-06 20:10  Hi all, I am working with vc++(6).I have an application,in which i need to display list of printer names in a Listbox.How can i get list of printers thanks vinod Re: How to get list of printer names Hamid_RT10-Jul-06 20:13 Hamid_RT 10-Jul-06 20:13  See EnumPrinters whitesky Re: How to get list of printer names Vinod Moorkkan10-Jul-06 23:10 Vinod Moorkkan 10-Jul-06 23:10  Thank you, Now i am getting list of printer names using EnumPrinters Assigning drive letter to raw volume kumarpavan10-Jul-06 20:03 kumarpavan 10-Jul-06 20:03  Hi, I am trying to assign a drive letter for the newly created raw volume. I used the code example mentioned for DefineDosDevice function. This program takes drive letter and devicename as parameters. I could successfully run the program on 2k3 servers. But when i try the same code on 2k server, it runs for first time. then again from disk management console, i delete the drive letter and try to run the same program but this time it fails with error 87. I have passed the drive letter for the program which is not existing on the system but still it throws an error. Can somebody please help me in this regard or any pointers to such related problems. I took the program from the link http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/editing_drive_letter_assignments.asp The error i got is as below editdrive.exe v:\ \device\harddisk2\partition1 (editdrive.exe is my program ) error 87: could not add v:\ I have compiled my program on windows XP. On 2k professional i saw that it assigns the drive letter but not the one i requested. even in this case the error is still popped out. Thanks with best Regards, Pavan Animation control ashish dogra10-Jul-06 19:58 ashish dogra 10-Jul-06 19:58  hello i want to know that as animation control is used to play clip of .avi type. now i use folloeing code in a button to play a clip m_ani.Open(_T("Findfile.avi")); m_ani.Play(0,-1,-1); but clip is not playing .now i want to know that (_T("Findfile.avi") how this will pick clip as .avi clip is stored at c:\MSDN\samples\vid98\content\mmedia now plz tell me. thanks Ashish Dogra MCA Noida Re: Animation control Hamid_RT10-Jul-06 20:22 Hamid_RT 10-Jul-06 20:22  whats m_ani? whitesky Re: Animation control ashish dogra10-Jul-06 20:24 ashish dogra 10-Jul-06 20:24  m_ani is member variable of animation control of type CAnimateCtrl Ashish Dogra MCA Noida Re: Animation control Hamid_RT10-Jul-06 20:31 Hamid_RT 10-Jul-06 20:31  Did you saw example CAnimateCtrl in msdn Here[^] and Here[^] whitesky Re: Animation control ashish dogra10-Jul-06 20:45 ashish dogra 10-Jul-06 20:45  this code does not help me as i want to know only that how avi file is loaded see my previous post thanks Ashish Dogra MCA Noida Re: Animation control Hamid_RT10-Jul-06 21:01 Hamid_RT 10-Jul-06 21:01  What your problem msdn example is good use open with filename for open an avi file and play(0 for begin frame,-1==last frame,-1==replay) for play whitesky Re: Animation control ashish dogra10-Jul-06 21:08 ashish dogra 10-Jul-06 21:08  sir yhaknks for your reply but i try this one and no clip is shown on anmated control Ashish Dogra MCA Noida Re: Animation control Hamid_RT10-Jul-06 21:29 Hamid_RT 10-Jul-06 21:29  Are you sure your file is avi whitesky Re: Animation control ashish dogra10-Jul-06 21:34 ashish dogra 10-Jul-06 21:34  yes sir as i search them as .avi and then i use one of the name in my code Ashish Dogra MCA Noida Re: Animation control Hamid_RT10-Jul-06 22:00 Hamid_RT 10-Jul-06 22:00  I dont know your code but i tested this code for you and it worked test this code CAnimateCtrl m_Ctrl; <code> m_Ctrl.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,100),this,1); m_Ctrl.Open("C:\\WINDOWS\\clock.avi"); m_Ctrl.Play(0,-1,-1); </code> whitesky Re: Animation control ashish dogra10-Jul-06 22:18 ashish dogra 10-Jul-06 22:18  thanks sir it works thanks a lot but sir can we resize this Ashish Dogra MCA Noida Re: Animation control Hamid_RT11-Jul-06 0:27 Hamid_RT 11-Jul-06 0:27  You can use form MoveWindow with new size whitesky how to display a 24 bit bitmap on a SDI View ashwath200510-Jul-06 19:47 ashwath2005 10-Jul-06 19:47  Hi all, I have a 24 bit bitmap image file. It needs to be displayed on a SDI View screen. Can anyone please tell me how i can do it. Re: how to display a 24 bit bitmap on a SDI View RockyJames10-Jul-06 19:57 RockyJames 10-Jul-06 19:57  use LoadImage function instead of LoadBitmap..LoadBitmap support 32X32..

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