How to get returned value from a spawned process?

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  - 1
    - Class & Global variables I have a question on how to avoid globals using classes: I have this: class cWorkElement { public: .... ..... Privat: ... ... } And then i have an array of 100 pointers to this array. cWorkElement *aMyElements[100]; The "problem" is, that i use some global variabels in this - and i was wondering if its normal pratice to include theese in a class instead ? Class cGlobalClass { public: // global variables cWorkElement *aMyElements[100]; } Is this a smart way to do it ? Thanks. Tag: How to get returned value from a spawned process? Tag: 226329
  - 2
    - [VC++.NET 2003] CRT memory leak detection I know there was a programming command in Visual C++ 6 to enable the CRT to use some crude memory leak detection. I am hoping I can do the same with the VC++ .NET 2003 CRT. I am interested in checking for memory leaks/memory overwrites for objects allocated with the C++ keyword new. How is this done? Tag: How to get returned value from a spawned process? Tag: 226292
  - 3
    - COMM port programming. Hi I have written a code to read from the COMM port. Below given is the code for the thread which reads the comm port and send the data to the object which process it. But there is a small problem in it. Some times the code doesn't read the complete content received at the comm port for exampl The data expected is *** BSC sous le LIC nominal ** Personnalisation du BSC [2 But the data which i get is *** BSC souersonnalisation du BSC [2 Please help me as this is very important UINT CSerialPort::CommThread(LPVOID pParam // Cast the void pointer passed to the thread back t // a pointer of CSerialPort clas CSerialPort* port = (CSerialPort*)pParam COMSTAT comStat DWORD dwRead,dwReadResult,dwResult,dwErrors DWORD dwEvtMask,dwErrorFlags COMSTAT ComStat ; BOOL bResult char lpszBlock[5000] int index char temp [40] OVERLAPPED osWaiter ZeroMemory (&osWaiter, sizeof(OVERLAPPED)) osWaiter.hEvent = CreateEvent ( NULL , TRUE , FALSE , NULL ); // auto reset - not signale if (!SetCommMask(port->m_hComm,EV_RXCHAR) return ( FALSE ) while(!port->m_bCloseSerialPort dwEvtMask = 0 bResult=::WaitCommEvent(port->m_hComm,&dwEvtMask,&osWaiter ); //ClearCommError(port->m_hComm,&dwErrorFlags,&ComStat) //strcpy(lpszBlock,"") if ( !bResult ) dwErrors = GetLastError () if ( dwErrors == ERROR_IO_PENDING ) switch ( WaitForSingleObject(osWaiter.hEvent,INFINITE ) ) case WAIT_OBJECT_0: // Wait Comm Event complete if(GetOverlappedResult ( port->m_hComm , &osWaiter, &dwReadResult , FALSE ) bResult = TRUE break case WAIT_TIMEOUT AfxMessageBox("WAIT_TIMEOUT") break default AfxMessageBox("Default") break if ( !bResult ) ClearCommError(port->m_hComm, &dwErrors, &comStat) PurgeComm ( port->m_hComm , PURGE_TXCLEAR | PURGE_RXCLEAR ); } else if ((dwEvtMask & EV_RXCHAR) == EV_RXCHAR ClearCommError(port->m_hComm, &dwErrors, &comStat) bResult=ReadFile(port->m_hComm,lpszBlock,comStat.cbInQue,&dwReadResult,&port->m_ovRead) if (!bResult switch (dwErrors = GetLastError()) case ERROR_IO_PENDING: // asynchronous I/O is still in progress switch ( WaitForSingleObject ( port->m_ovRead.hEvent , 6000 ) ) case WAIT_OBJECT_0 // Async I/O complete GetOverlappedResult ( port->m_hComm , &port->m_ovRead, &dwReadResult , FALSE ) break case WAIT_TIMEOUT default ClearCommError(port->m_hComm, &dwErrors, &comStat) dwReadResult = 0 break } // wait for IO to complet break default dwReadResult = 0 break } // switch ReadFile Erro if(dwReadResult>0) { lpszBlock[dwReadResult]='\0'; ::SendMessage((port->m_pOwner)->m_hWnd, WM_COMM_RXCHAR, (WPARAM)lpszBlock, (LPARAM) port->m_nPortNr); } } }while(dwReadResult>0); if(index!=0) { lpszBlock[index]='\0'; ::SendMessage((port->m_pOwner)->m_hWnd, WM_COMM_RXCHAR, (WPARAM)lpszBlock, (LPARAM) port->m_nPortNr); } } } AfxMessageBox("Port is closed"); EscapeCommFunction(port->m_hComm,CLRDTR); PurgeComm(port->m_hComm, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR); CloseHandle(port->m_hComm) ; return( TRUE ) ; } Tag: How to get returned value from a spawned process? Tag: 226282
  - 4
    - VC 7 compiler q HI I just need a little info: Anybody know if there's a point in getting VC7 stand alone? What does it mean , no optimized compiler and. Will all my VC6 application compile ?? Also, i Have C# , stan alone. Can i mix C# stand alone and VC7 stand alone ? Why stand alone ? cause VC7 is only 150$, but .NET is over a 1000$ :( Thanks a lot . Tag: How to get returned value from a spawned process? Tag: 226281
  - 5
    - [VC++.NET] long long ========= Windows 2000 Professional Microsoft Visual C++ .NET (Version 7.0) ========= ====== C++ code : File foo.cpp : BEGIN ====== int main() { long long var; return 0; } ====== C++ code : File foo.cpp : END ======== ====== Compilation : BEGIN ====== ------ Build started: Project: proj-02, Configuration: Release Win32 ------ Compiling... foo.cpp \src\foo.cpp(3) : error C2632: 'long' followed by 'long' is illegal [---omitted---] ---------------------- Done ---------------------- Build: 0 succeeded, 1 failed, 0 skipped ====== Compilation : END ======== Is there any way to use 'long long' in VC++.NET? -- Alex Vinokur mailto:alexvn@connect.to http://mathforum.org/library/view/10978.html Tag: How to get returned value from a spawned process? Tag: 226280
  - 6
    - Performance Monitor customization Hi I Wonder... Is it possible to add custom counters to the performance monito ( that is provided with the OS )? how? any samples or pointers will b appreciated Thanks Nadav Tag: How to get returned value from a spawned process? Tag: 226275
  - 7
    - !gle If you can use !gle to dynamically view the value of GetLastError in code without actually having it in the code in WinDbg, is there any way you can use it in VC6 or VS.NET What window do you type this into? Tag: How to get returned value from a spawned process? Tag: 226274
  - 8
    - PostQuitMessage Apparently, PostQuitMessage 'posts a quit message to the calling thread's message queue'. How does it know which window this relates to? What if the calling thread's message pump is sending messages to more than one window, or what if there is more than one window in the calling thread but each with their own message pump How would the function know which window to send the quit message to in both of the above cases? Tag: How to get returned value from a spawned process? Tag: 226272
  - 9
    - LONGLONG How expensive is multiplying and dividing by a LONGLONG (i.e. 64-bit variable), and what ways can be got around it for performance critical stuff? Tag: How to get returned value from a spawned process? Tag: 226270
  - 10
    - LONGLONG How expensive is multiplying and dividing by a LONGLONG (i.e. 64-bit variable), and what ways can be got around it for performance critical stuff? Tag: How to get returned value from a spawned process? Tag: 226269
  - 11
    - handle leaks..? Hi all, It works fine on XP Professional but not on WinNT 4.0 and Win2k. While PrivateBytes, VirtualBytes,etc doing very fine I see Handle count keep going up in the Task Manger and PerfMon. Its about handle leaks but I wonder if anything special about winnt 4.0 and win2k. In the NT Service I'm creating threads in a loop, threads return fine and I do close handles using CloseHandle() in a loop. And the return value of CloseHandle() for all the handles looks fine (as viewed using OutputDebugString() in the debugger and WaitForMultipleObjects always is WAIT_OBJECT_0) for(i = 0;i<z;i++) { array[i] = CreateThread(0, 0, // use default stack size (LPTHREAD_START_ROUTINE) ThreadProc, // thread function NULL, // argument to thread function 0, // use default creation flags &dwThreadID); } DWORD waitfor = WaitForMultipleObjects(noofprocess,hThread,TRUE,freq); int relhandles = 0; switch(waitfor) { char clip[512]; BOOL close; case WAIT_TIMEOUT: OutputDebugString(_T(" WAIT_TIMEOUT")); for(relhandles = 0; relhandles < curIns; relhandles++) { if(hThread[relhandles] !=0) { close = CloseHandle(hThread[relhandles]); if(close != 0) { sprintf(clip,_T("\n Handle %d closed \n"),relhandles); OutputDebugString(clip); } else { sprintf(clip,_T("\n Close Handle %d failed \n"),relhandles); OutputDebugString(clip); _Module.LogEvent(_T(clip)); } } } break; case WAIT_ABANDONED_0: OutputDebugString(_T("WAIT_ABANDONED")); break; case WAIT_OBJECT_0: OutputDebugString(_T("WAIT_OBJECT_0")); for(relhandles = 0; relhandles < curIns; relhandles++) { if(hThread[relhandles] !=0) { close = CloseHandle(hThread[relhandles]); if(close != 0) { sprintf(clip,_T("\n Handle %d closed \n"),relhandles); OutputDebugString(clip); } else { sprintf(clip,_T("\n Close Handle %d failed \n"),relhandles); OutputDebugString(clip); _Module.LogEvent(_T(clip)); } } } break; default: OutputDebugString(_T("default")); } thank you, vinod Tag: How to get returned value from a spawned process? Tag: 226268
  - 12
    - [VC++.NET] Getting VC++ compiler version within a program ========= Windows 2000 Professional Microsoft Visual C++ .NET (Version 7.0) ========= Does VC++ contain any macro which enables to get compiler name and version within a program (something like __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ in GNU gcc). -- Alex Vinokur mailto:alexvn@connect.to http://mathforum.org/library/view/10978.html Tag: How to get returned value from a spawned process? Tag: 226265
  - 13
    - localtime() Hi, Does localtime() function automatically corrects for daylight savings time? Actually I am showing the system time in my UI and it should adjust for daylight saving time and show it accordingly. Do I need to call __tzset()? If I dont call this, does it take the deafult? Thanks in advance, Sateesh. Tag: How to get returned value from a spawned process? Tag: 226263
  - 14
    - ReadFileEx and FileIOCompletionRoutine When the ReadFileEx calls the completion routine I check the buffer holding the returned data. if (ReadBuffer[0] != 0 ) { this executes even though a 0 is in the first element } Why???? thanks Tag: How to get returned value from a spawned process? Tag: 226260
  - 15
    - About database errors Respected Sir, I am using DAO Recordset for my project and recordset type is cynasset, but when I am trying to access any records, I am finding 0 records as well as whenever I am trying to add, edit or delete records, I am getting an error first time when dialog is loaded in daocore.cpp file at line no. 4854 which contains the sentence "ASSERT (m_nFields > 0);". So where is the problem? Regards, Jitesh Tag: How to get returned value from a spawned process? Tag: 226255
  - 16
    - Help about graphs and how to query them. Hi, I'm sorry if this it not the right newsgroup. My question is related with databases, however the way I'm going to handle everything could not be related with that (I use algorithms about reading graphs), and maybe you guys come have a good idea. Ok, let's see if I can explain the problem. I have about a SQL database with 15 tables. Each table has several fields, however each table has a common field called 'Code' ex. Table Vehicles -------------- Code Make Color Table People ------------- Code Name Age Table Addresses ----------------- Code City ZIP ... Now we want to relate records from one table to another. For example, we want to say 'John has two cars' In order to do that, I have an external table called Links with source an destination fields. For the example we would have Source Dest ---------------- P132 V100 P132 V242 (P132 is a record from the People table with code 132, V100 a vehicle from the Vehicle table with code 100, and V242 a vehicle with code 242) So, with all that, we know that John (P132) is related with two vehicles. If I want to run the query 'People associated with vehicles' it would be easy to query that table and get that information. Now, let's suppose we have this situation: Source Dest ---------------- P132 V100 P132 V242 P140 V500 P132 P140 In this example, John is related with Michael (P140) and Michael is related with a vehicle (V500). If I want to run the same query than before 'People associated with vehicles', because of P132 is related with P140 and P140 is related with a V500 this implies that P132 is related with V500. Now, the query is not so simple, because it's like a graph and I need to make a Depth First Search to get what I want. Doing that, I will get that P132 is related with V500 because there is a 'path' to get there. I have done all this and it works fine. The problem that I have is that I need to make that Depth First Search for each people that I have in the database in order to see if I have vehicles associated with it. If I don't have many records it's ok, but If I have 100,000 people on the database I would have to make that search 100,000 times just to see if there is a path between them, I mean, if there is a way to get from a person to a vehicle. In this case... this solution doesn't work, because it takes forever... What do you guys suggest I can try? I though that one solution would be to have a process running on the server that maintains a table with ALL the links that we have in the database and the depth of the link. So, in our example we'd have a entry "P132 V500 with depth 2" Having that table it would be easy to query. Inconvenience: the table is going to be HUGE, and also the process has to be smart enough to keep track of deleted links, new links... I'd appreciate if you guys have any idea or suggestions about this and how I can get a better perfomance. Thanks a lot for reading this whole message!! Tag: How to get returned value from a spawned process? Tag: 226247
  - 17
    - embedding bitmap Hi- Does anyone know of sample code that would show me how to accomplish this: embed a bitmap file into a project (and subsequently my DLL) then write that embedded data to file at runtime? I'm developing a plugin and using there UI library, I want to create the file at runtime to prevent users from replacing the file with there own version. Thanks for any help, Steve Tag: How to get returned value from a spawned process? Tag: 226246
  - 18
    - About copying files Respected Sir, How to copy one database file from one location to another through code in VC? In the same way how to copy one wav file from one location to another through code in VC? Regards, Jitesh Tag: How to get returned value from a spawned process? Tag: 226231
  - 19
    - About data type conversion Respected Sir, How to convert data from CString to COleDateTime? Regards, Jitesh Tag: How to get returned value from a spawned process? Tag: 226230
  - 20
    - How can I communicate with a service? Hi, I'd like to design a software that is mainly made of a service and that would need a user interface to view and edit the configuration. Now, what I need to know is: Is it possible for an independant exe to connect to a service and get data from it or send data to it? If it's possible, what is the best way to do it? Thanks Tag: How to get returned value from a spawned process? Tag: 226229
  - 21
    - Memory Problem Hi all I'm having a problem with the memory management: I'm writing a program with Visual C++ which creates, after a call method, a lot of structures and classes and afterwards they are deleted completely; but I open the Windows Task Manager and the memory used by my program is is always increasing, is it correct or memory should decrease after deleting the classes and structures with 'delete'?? Any idea?? Of course, the problem is that when I'm inserting (but not storing) quite data, my program reaches 200 MB and I think that there is something wrong! Vicent Tag: How to get returned value from a spawned process? Tag: 226228
  - 22
    - GetWindowDC twice Hi Is it ok to call GetWindowDC twice on the same window before ReleaseDC ? HDC dc1 = GetWindow(hWin1); HDC dc2 = GetWindow(hWin1); ... ReleaseDC(hWin1, dc2); ReleaseDC(hWin1, dc1); I usualy only do it once but I noticed that sometimes my drawings calls generate a WM_PAINT message and then id get BeginPaint EndPaint which pretty much does get/release of dcs. thanks a lot. Tag: How to get returned value from a spawned process? Tag: 226223
  - 23
    - template specialization bug Hello, I think I have found a template specialization bug in Microsoft Visual C++ 2003 (VC7.1). The following code compiles with gcc3.2 and Intel 8.0, but gives error C2764 "template parameter not used in partial specialization" with VC7.1. The workaround would be to repeat the complex type deduction done in DefinesAType for the specialization of SomeClass, which is code duplication and error-prone. //a class that has public typedef template < typename T > struct DefinesAType { //assembles in a complicated (assumed) //way a new type from T typedef T AType; }; //class SomeClass will be specialized template < class T> class SomeClass {}; //specialize on the type defined in DefinesAType template < class T > class SomeClass<typename DefinesAType<T>::AType> { }; int main() { SomeClass<int> sc; } Tag: How to get returned value from a spawned process? Tag: 226221
  - 24
    - delete this Hi all I'm developing a program with Visual C++ a I'm wondering if I can write this sentence in Visual C++: 'delete this'. The main objective of this sentence is to the delete the object that I'm in, does anyone know if this can cause some errors? Thanks Tag: How to get returned value from a spawned process? Tag: 226220
  - 25
    - CString mess HEAP in long running programs ? h i make heavy use of CString in database and communications routines in a large program that runs for months. will this eventually cause HEAP problems? thank a Tag: How to get returned value from a spawned process? Tag: 226218
- Next
  - 1
    - determining Windows version I need to know at run time if the operating system is Win95/98 or a WinNT variant. Any simple way to do that? Thanks. Tag: How to get returned value from a spawned process? Tag: 226216
  - 2
    - Identify user Hello, Given a process id, at kerner level can we identify who's the user who has the control over the process or who is running that process (or an application). I want to know this for win 98, XP and 2k and above. rgds Bmm Tag: How to get returned value from a spawned process? Tag: 226215
  - 3
    - <char*> data with process-to-process messages Hi there, I register a custom message with RegisterWindowMessage function. I would like to pass <char*> messages via the message: char buf[80]; .... // fill the buf with a message SendMessage( HWND_BROADCAST, MYMESSAGE, (WPARAM)buf, NULL ); this of course does not work as expected: the array is correctly received only in the process that sends the message. all other processes cannot see the message data (I suppose this is due to memory beeing virtually adressed in each process). my question is: how then should I declare the memory to be able to pass the data to another process as <char*>? I've tried to alloc the memory globally (via GlobalAlloc) and pass the pointer but with no result. The only solution I've found is to register the data as an atom (GlobalAddAtom) as pass the atom handle. This solution, however, does not look like a general one. thanks in advance for your help, Wiktor Zychla Tag: How to get returned value from a spawned process? Tag: 226206
  - 4
    - Dll exporting a function that creates MFC dialog is causing crash in MT. Hi I am facing a crash only in 2k with the following scenario . In XP and 98 this problem is not observed In my scenario I have X.exe, Y.dll. Y.dll exports a function (say Z) which has DoModal() of a dialog called. X.exe on click of a button starts a thread and in that thread calls the Z method which shows up a dialog. The problem happens when the button is clicked thrice or more than thrice. The three dialogs are lauched in three threads and are shown. But if I try to move the dialogs, After some time a crash is seen, whcih occurs in a method of MFC42.dll. More information about the scenario is X.exe links Y.dll statically. X links MFC as a shared dll, where as Y.dll links the same as a static dll. I suspected module state change when the the control is going out of thread boundary to Dll. But the exported function already has AFX_MANAGE_STATE(AfxGetStaticModuleState( )); as te first statement. Please let me know if any body faced the same problem before and point me towards the solution. Thanks Sre Tag: How to get returned value from a spawned process? Tag: 226202
  - 5
    - try block performance I have two pieces of code performing virtually the same task. While one of them (f1) is written in a try block, hoping to catch as many exceptions as possible, the other one (f2) is not: void f1 (void) { try { do_task1(); do_task2(); do_task3(); } catch (exception1){...} catch (exception2){...} ... } void f2 (void) { do_task1(); do_task2(); do_task3(); } Does f1 imposes any necessary runtime-overhead? Is to answer this question implementation dependent? And if so, is there a general answer applies to most implementations? ben Tag: How to get returned value from a spawned process? Tag: 226200
  - 6
    - Odd float C2092 compiler error VC++6 SP4 (I think SP4... how about listing SP level in Help/About, guys : Also compiler processor pack installed Anyhoo, just a small quirk with float initialization (maybe applies to other types too?) float a(1), b(2) int c(3) const float d((a + b)/float(c)); // error C2062: type 'float' unexpecte const float d((a + b)/c); // O const float d(a/float(c)); // O const float d = (a + b)/float(c); // O The first variant was the one I naturally used, and (IMHO) the most 'correct', and is the one that doesn't work... : Bil Tag: How to get returned value from a spawned process? Tag: 226199
  - 7
    - AfxBeginThread I have an ATL / MFC project which creates an ATL-based dialog box. When the dialog is created I want to spawn a worker thread. The code to create the thread is: DWORD dw; CWinThread* pThread = AfxBeginThread(SendFileFTP, (LPVOID) &dw); The thread proc is defined as this: UINT CUploadProgress::SendFileFTP(LPVOID pParam) { CProgressCtrl* pBar = (CProgressCtrl*) GetDlgItem(IDC_PROGRESS1); for(int x = 0; x <= 10; x++) { pBar->SetPos(x); } return 0; } But when I try to compile, it get this error message: error C2665: 'AfxBeginThread' : none of the 2 overloads can convert parameter 1 from type 'unsigned int (void *)' I suppose it's all very obvious, but could someone help me with this? What am I doing wrong? Thanks Tag: How to get returned value from a spawned process? Tag: 226194
  - 8
    - About setup.exe Respected Sir, How to create setp file in VC? Regards, Jitesh Tag: How to get returned value from a spawned process? Tag: 226191
  - 9
    - Generating ascii values Can anybody tell me what header files and function name do I need to get VC to generate the numerical ascii value of a given character? TIA. Tag: How to get returned value from a spawned process? Tag: 226187
  - 10
    - list-view: how to know if scroll-bars are being displayed Hello, is there a way of knowing (or being notified) if a list-view is displaying scroll bars (horizontal or vertical)??? I'd like to prevent horizontal scroll-bars from getting displayed resizing just before the list-view to prevent them from appearing, but this obviously requires knowing if they are being displayed. Bob Rock Tag: How to get returned value from a spawned process? Tag: 226186
  - 11
    - How check validity of BSTR? Hi, When a BSTR is passed is as a function parameter, how to test the validity of BSTR? In case of char* pointer we check whether it is NULL before using it. Is there a similar error checking mechanism for BSTR? I tried checking the lenght, but this is not the rightway, it hangs. I am using ATL, my function get called by ExOLEDB. Thanks Ramesh Tag: How to get returned value from a spawned process? Tag: 226183
  - 12
    - Re: sublass instance perhaps poor choice of wording on my part, but is there one instance of that fucntion? or one per each window subclassed? Tag: How to get returned value from a spawned process? Tag: 226182
  - 13
    - LNK2001 : unresolved external symbol "public: _thiscall trying to compile with vc++ 6.0, on windows xp, I doubled checked my project settings and options but can't understand why I'm getting the following errors : Linking . . . Server.obj : error LNK2001: unresolved external symbol "public: __ this call CallImpl(void)" (??0CallImpl@@QAE@XZ) Tag: How to get returned value from a spawned process? Tag: 226172
  - 14
    - vcvars32.bat not present after installing the Microsoft .NET SDK I am new to C++ and am trying to set up my machine to compile from the command line. The following program compiles and links: #include <stdio.h> main() { printf("This is my first C program.\n"); } This one doesn't: #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <windowsx.h> int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow) { MessageBoxA(NULL,"What's up, world!", "Windows PRogram", MB_OK); return(0); } Here's the error I'm getting when I compile the second program: C:\>cl winprog.c Microsoft (R) 32-bit C/C++ Standard Compiler Version 13.10.3077 for 80x86 Copyright (C) Microsoft Corporation 1984-2002. All rights reserved. winprog.c Microsoft (R) Incremental Linker Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. /out:winprog.exe winprog.obj winprog.obj : error LNK2019: unresolved external symbol __imp__MessageBoxA@16 referenced in function _WinMain@16 winprog.exe : fatal error LNK1120: 1 unresolved externals From reading the documentation, it looks like I'm supposed to run a file named 'vcvars32.bat' to set up my enviromment. However, this file is not on my hard drive. I've uninstalled and reinstalled the SDK 3 times to make sure I'm not missing a setting, and the 'vcvars32.bat' file still is not on my machine. I have also loaded the Platform SDK. I am running Windows XP Home. Please help. Tag: How to get returned value from a spawned process? Tag: 226167
  - 15
    - Threads Hi, I want to create a thread and this thread should wait some messages and behave accordingly... Lets say I derived a class from CWinThread.. I think the execution point is determined by the function that will be passed as an argument to the AfxBeginThread function.. UINT MyThreadFunc(LPVOID lParam) CMyThread *myThread = (CMyThread *) AfxBeginThread(MyThreadFunc,NULL, THREAD_PRIORITY_NORMAL,0,0); Now I want to post some messages to myThread by PostThreadMessage.. I have already defined message handlers for some user messages #define WM_USER_THREAD_UPDATE_PROGRESS (WM_USER+0x102) ON_MESSAGE(WM_USER_THREAD_UPDATE_PROGRESS, OnThreadUpdateProgress) it seems I will handle this messages into MyThreadFunc with GetMessage and PeekMessage and after TranslateMessage and DispatchMessage OR this messages will come to the PreTranslateMessage of CMyThread..(?) if I will handle messages in MyThreadFunc then the function will look like this.. UINT MyThreadFunc(LPVOID lParam) { while (GetMessage(...)) { //if message is destroy thread, then quit.. //else TranslateMessage(...) DispatchMessage(...) } } the syntax may not be correct.. but whose message pump GetMessage function gets messages? I mean if I had two thread with the same function, what will happen? I hope I can explain what i thought:) if preTranslateMessage gets the messages, the there will not need for MyThreadFunc, so it should wait until the thread is terminated???! Please tell me I am wrong or not.. Thanks anyway.. Tag: How to get returned value from a spawned process? Tag: 226166
  - 16
    - How to launch an Executable from within memory Hi All , I am writing a program that inputs an executable ,compresses it and outputs an exe in which the input compressed exe has been packed.The Output exe when executed , is supposed to uncompress the original exe and then Launch this exe from memory without writing it to the disk. Can anybody help me as to how to launch an exe that has been read into a memory buffer...? Thanks Jeffrey Tag: How to get returned value from a spawned process? Tag: 226162
  - 17
    - UNICODE vs _UNICODE First off, how come there is both a _UNICODE and UNICODE symbol used in the Win32 API? Second off, what is the distinction, if any? I've noticed that for builds to work w/o errors, I need to either have both defined or neither. So, anyone feeling descriptive? I'd really like to know which I should officially be using in code where I need to detect whether building with or w/o it (i.e. #ifdef UNICODE vs #ifdef _UNICODE). Thanks. -- Kendall Gifford ======================================== WEB: http://kendall.jedis.com/ EMAIL: [REPLY TO NEWSGROUP PLEASE] ======================================== Tag: How to get returned value from a spawned process? Tag: 226159
  - 18
    - Inline methods Hi all, I have always defined inline methods for a class in a header file (either the header in which the method was declared, or in a separate one for the sake of more readable library headers). So I would end up with something like: ////// some_class.h ////// class SomeClass { void someInlineMethod() { // Do stuff } void someNormalMethod(); }; ////// some_class.cpp ////// #include "some_class.h" void SomeClass::someNormalMethod() { // Do more stuff } A while back, I came across some C++ code specifically for MSVC that actually defined methods in the .cpp file as inline, like so: ////// some_class.h ////// class SomeClass { void someInlineMethod(); void someNormalMethod(); }; ////// some_class.cpp ////// #include "some_class.h" inline void SomeClass::someInlineMethod() { // Do stuff } void SomeClass::someNormalMethod() { // Do more stuff } When I try to do this in MSVC.Net, I sometimes get a linking error saying something to the effect that the linker cannot find the method that I declared as inline (sorry, I don't have the exact error message in front of me). Other times, it works fine, although I don't know for sure that the method is actually being inlined. Can anyone shed some light as to the true way to define inline methods, preferrably in a platform-independent sort of way? Dave Tag: How to get returned value from a spawned process? Tag: 226158
  - 19
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  - 21
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  - 22
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  - 23
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  - 25
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Hi

I have the following scenarios: client/server programs implemented with winsock are installed on all systems inthe network (assume it contains s1, s2, and s3, and other systems). If I send a command from s0 client to s1 server, which ask s1 server to execute a command line of s1 client to talk with s2 server, s2 server will return value (error code in my case) to s1 client. My question is how I can get the returned value on s0

The command line execution on s1 is realized by calling system(), to which I pass the client program name (the client program will returns error code), and the processed data from s0, but system() only return -1 or 0 to indicate error or succeed. I also looked at CreateProcess(), but still couldn't see how I can get the returned value from client execution

S0: Client/Serve
/

\
S1:Server/Clinet <------------------------------>Server/Client:S

Anybody got idea

Thanks
Peter

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Re: How to get returned value from a spawned process? by Igor

Igor
Tue Mar 02 20:16:25 CST 2004

"Peter" <anonymous@discussions.microsoft.com> wrote in message
news:E83F4BD3-6C4E-4F43-8D13-BDD68EFF2488@microsoft.com...
> The command line execution on s1 is realized by calling system(), to
which I pass the client program name (the client program will returns
error code), and the processed data from s0, but system() only return -1
or 0 to indicate error or succeed.

According to documentation, system() is supposed to return whatever the
command processor returned, which in its turn should return the exit
code of the application. BTW, -1 is a legal success value - you should
distinguish between success and failure by setting errno to 0 before the
call, and checking it after the call.

I haven't used system() myself though.

> I also looked at CreateProcess(), but still couldn't see how I can get
the returned value from client execution.

GetExitCodeProcess
--
With best wishes,
Igor Tandetnik

"For every complex problem, there is a solution that is simple, neat,
and wrong." H.L. Mencken

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