/*

 * 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 

#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);

#ifndef _WINDOWS

	WriteFile(GetStdHandle(STD_ERROR_HANDLE), errbuf, strlen(errbuf), &numread, FALSE );

	Sleep(3000);

#else

	GetModuleFileName(NULL, modulename, MAX_PATH);

	MessageBox(NULL, errbuf, modulename, MB_ICONWARNING|MB_OK|MB_TASKMODAL|MB_SETFOREGROUND);

#endif

	exit(EXIT_FAILURE);

}