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formatmessage error Port O Connor, Texas

That way I can refer back and forth between my code and the text of the help file. If the function cannot find a message for that LANGID, it sets Last-Error to ERROR_RESOURCE_LANG_NOT_FOUND. i don't want to show the user just theright error code ,such as '10047',without any description. That doesn’t make it OK.

Thanks for the knowledge! –T.T.T. Oh yes, you need the definition of string_utils: module string_utils use ISO_C_BINDING implicit none private public CharStar2Deferred interface function ftn_strlen(str) bind(C, name = 'ftn_strlen') import implicit none integer(C_SIZE_T) ftn_strlen type(C_PTR), value Arguments if (nTchars == 0) then write (*,'(A,Z8.8,3A,Z8.8)') "Format message failed for status ", last_error, " while ", & string, ": error status = ", GetLastError() else ! HRESULT hresult = application.CreateInstance("Excel.Application"); if (FAILED(hresult)) { // what should i put here to obtain a human-readable // description of the error?

Which is nothing else than numbering the parameters. If the function fails, the return value is zero. However, if you use a width and precision specifier, the insert numbers do not correspond directly to the input arguments. By default, the Arguments parameter is of type va_list*, which is a language- and implementation-specific data type for describing a variable number of arguments.

Examples The FormatMessage function can be used to obtain error message strings for the system error codes returned by GetLastError. The follow subroutine is my first attempt to get the error message but so far I've had no joy. Browse other questions tagged c windows winapi wininet formatmessage or ask your own question. In your latest example, Steve, is it safe to assume that if the FormatMessage function fails the associated memory for the message buffer pointer has not been allocated?

And I would NEVER use the names from the documentation, because they all use the silly "Hungarian Notation", which is one of the worst ideas to have been foisted off on However, if an error notification is to be presented at all, it needs to carry both user-oriented information and tech-support-oriented information. Is there any job that can't be automated? You have to allocate the memory and get its handle.

last_error = GetLastError () ! But passing it the pointer's address (pointer-to-a-pointer), but casting it to a regular pointer... C++ Copy #ifndef UNICODE #define UNICODE #endif #include #include void main(void) { LPWSTR pMessage = L"%1!*.*s! %4 %5!*s!"; DWORD_PTR pArgs[] = { (DWORD_PTR)4, (DWORD_PTR)2, (DWORD_PTR)L"Bill", // %1!*.*s! What are Imperial officers wearing here?

Errors like this generate unnecessary support calls to tech support departments, and consume a lot of time of the technical support people trying to determine what has gone wrong. Just had the feel that the readers might miss this small detail and just use your article as an "advanced GetLastError()" function. Might prefer the name PrintLastError since this doesn't actually handle anything. i am a beginner with the MFC.

FORMAT_MESSAGE_FROM_STRING 0x00000400 Pointer to a string that consists of unformatted message text. If FORMAT_MESSAGE_ALLOCATE_BUFFER is set, this parameter specifies the minimum number of TCHARs to allocate for an output buffer. For example, if the source string is "%1!*.*s! %4 %5!*s!", the arguments could be, 4, 2, Bill, Bob, 6, Bill (if using the FORMAT_MESSAGE_ARGUMENT_ARRAY flag). These escape sequences and their meanings are shown in the following tables.

Sign In·ViewThread·Permalink Last Visit: 31-Dec-99 18:00 Last Update: 15-Oct-16 8:41Refresh1 General News Suggestion Question Bug Answer Joke Praise Rant Or the caller can ask the function to search the system's message table resource(s) for the message definition. lpSource [in, optional] The location of the message definition. If you want to pass 0 for the nSize, you write a 0 in that parameter position; it is extremely silly to declare a variable, initialize it to 0, and use

Hot Network Questions Block for plotting a function using different parameters How many answers does this question have? It includes some strsafe.h header, that isn't safe at all, it causing a bunch of a compiler errors in winuser.h and winbase.h. –Hi-Angel Aug 12 '14 at 14:55 add a comment| this to an array of characters. Review paper/book on Finite Difference Methods for PDEs Exploded Suffixes What is the difference between a crosscut sled and a table saw boat?

LANG_NEUTRAL, & ! up vote 11 down vote favorite 1 I'm running this to test FormatMessage: LPVOID lpMsgBuf; errCode=12163; FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM , 0, errCode, 0, (LPTSTR) &lpMsgBuf, 0, NULL ); However, when All in all, the article is good, thanks for writing and posting it. Perhaps you did not expect this error and don't really know what to do when it occurs, but your tech support people could waste hours trying to track down a problem

A much better example of an error message is the next one. Here is the code of the function in its entirety: The download consists of a compilable .cpp file and the accompanying .h file.CString ErrorString(DWORD err) { CString Error; LPTSTR s; if(::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER How do I explain that this is a terrible idea? Newcomer16-Nov-03 11:07 I have not done an internationalized app in many years (we let our overseas distributors handle this), but I'd suggest getting the Schmidt book on Programming International APplications from

I have not read the book (it sounds interesting) but how does he propose to handle errors that actually DO stop the proceedings, that is, conditions which arise which require the Get the actual system error code ! Sign In·ViewThread·Permalink Good code, bad design Jim A. if not specified.

As it was I did find it useful for explaining how to do lots of things I hadn't done before. This flag cannot be used with FORMAT_MESSAGE_FROM_HMODULE or FORMAT_MESSAGE_FROM_SYSTEM. C# questions Linux questions ASP.NET questions SQL questions VB.NET questions discussionsforums All Message Boards... How do I explain that this is a terrible idea?

under wine). IDS_DEVICE_ERROR "There is a problem %1 with device %2" CString s = FormatMyMessage(IDS_DEVICE_ERROR, ProblemDescription, DeviceName); Note this call works correctly even if you change the message to say IDS_DEVICE_ERROR "Device %2 With Insertion Strings you are out of trouble because FormatMessage takes care of the order. Is 'if there's any' grammatical in this sentence?

If you change the declaration as you have shown, your code is now nonfunctionally incorrect, because you are passing a NULL pointer to the buffer. share|improve this answer edited Aug 12 '13 at 8:09 Cody Gray 146k23278368 answered Jan 29 '10 at 2:22 Shog9♦ 108k28184217 1 wow didn't know this! –Matt Joiner Jan 29 '10 FORMAT_MESSAGE_ALLOCATE_BUFFER tells FormatMessage to allocate memory for the output string. addess in the lpBuffer argument.

It is useful for prompt messages. %n!format string! While %0 will suppress the newline, this is true only for messages YOU create and put this format request into (IBM made the same blunder in 1968 in TSS/360; you think c++ winapi character-encoding mingw wine share|improve this question edited Oct 4 at 18:22 asked Aug 13 '14 at 8:45 Hi-Angel 1,35451540 This could be an encoding mismatch, what does The string "The file '%s' could not be copied to '%s'" becomes "The file '%1!s!' could not be copied to '%2!s!'" Its that simple.