/*
* MtVerify.h
*
* Error handling for applications in
* "Multitheading Applications in Win32"
*
* The function PrintError() is marked as __inline so that it can be
* included from one or more C or C++ files without multiple definition
* errors. For the examples in this book, this works fine.
* To use the PrintError() in an application, it should be taken out,
* placed in its own source file, and the "__inline" declaration removed
* so the function will be globally available.
*/
#pragma comment( lib, "USER32" )
#include <crtdbg.h>
#define MTASSERT(a) _ASSERTE(a)
#define MTVERIFY(a) if (!(a)) PrintError(#a,__FILE__,__LINE__,GetLastError())
__inline void PrintError(LPSTR linedesc, LPSTR filename, int lineno, DWORD errnum)
{
LPSTR lpBuffer;
char errbuf[256];
#ifdef _WINDOWS
char modulename[MAX_PATH];
#else // _WINDOWS
DWORD numread;
#endif // _WINDOWS
FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
errnum,
LANG_NEUTRAL,
(LPTSTR)&lpBuffer,
0,
NULL );
wsprintf(errbuf, "\nThe following call failed at line %d in %s:\n\n"
" %s\n\nReason: %s\n", lineno, filename, linedesc, lpBuffer);
#ifdef _WINDOWS
GetModuleFileName(NULL, modulename, MAX_PATH);
MessageBox(NULL, errbuf, modulename, MB_ICONWARNING|MB_OK|MB_TASKMODAL|MB_SETFOREGROUND);
#else
WriteFile(GetStdHandle(STD_ERROR_HANDLE), errbuf, strlen(errbuf), &numread, FALSE );
Sleep(3000);
#endif
exit(EXIT_FAILURE);
}
|