97 lines
3 KiB
C++
97 lines
3 KiB
C++
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#include <windows.h>
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#include "errorrep.h"
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// This is the exception filter that we will use to catch an otherwise
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// unhandled exceptions (if a global unhandled exception filter is used)
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// or to catch exceptions that occur in a __try / __except block.
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LONG MyExceptionFilter(EXCEPTION_POINTERS *pep)
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{
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EFaultRepRetVal frrv;
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pfn_REPORTFAULT pfn = NULL;
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HMODULE hmodFaultRep = NULL;
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LONG lRet = EXCEPTION_CONTINUE_SEARCH;
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// Manually load the error reporting dll. We could have called ReportFault
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// directly and implicitly linked with the dll, but unexpected exceptions
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// should not be a common scenerio so we will save resources and only load
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// it when necessary.
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// In addition, since this feature is only available on Windows Whistler,
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// this will let an application continue to function when on an earlier
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// version of Windows.
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hmodFaultRep = LoadLibrary("faultrep.dll");
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if (hmodFaultRep != NULL)
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{
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lRet = EXCEPTION_EXECUTE_HANDLER;
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pfn = (pfn_REPORTFAULT)GetProcAddress(hmodFaultRep, "ReportFault");
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if (pfn != NULL)
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frrv = (*pfn)(pep, 0);
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else
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lRet = EXCEPTION_CONTINUE_SEARCH;
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FreeLibrary(hmodFaultRep);
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}
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return lRet;
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};
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int __cdecl main(int argc, char **argv)
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{
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DWORD *pdw = NULL;
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BOOL fUseGlobalExceptionFilter = FALSE;
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// There are two ways to handle unexpected exception in applications.
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// Either
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// define a global unhandled exception filter that will get called
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// if nothing else handles the exception.
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// use a __try / __except block to catch exceptions and define your
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// own filter function.
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// Both methods will be demonstated below. If the user of this app passed
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// "UseGlobalFilter" as an argument to this test application, we will
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// use a global unhandled exception filter. Otherwise, we will use a
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// __try / __except block.
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// Use a global unhandled exception filter
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if (argc > 1 && _stricmp(argv[1], "UseGlobalFilter") == 0)
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{
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// Set the global unhandled exception filter to the exception filter
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// function we defined above.
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SetUnhandledExceptionFilter(MyExceptionFilter);
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// cause a fault
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*pdw = 1;
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}
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// Use __try / __except blocks
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else
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{
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__try
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{
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// cause a fault
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*pdw = 1;
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}
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// we need to pass the structure returned by GetExceptionInformation()
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// to the filter.
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// Note that the pointer returned by this function is only valid during
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// the execution of the filter (that is, within the parenthesis of the
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// __except() statement). If it needs to be saved, you must copy the
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// contents of the structure somewhere else.
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__except(MyExceptionFilter(GetExceptionInformation()))
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{
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// we don't do anything interesting in this handler
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}
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}
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return 0;
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}
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