Custom assert macro for windows

assert.h

//------------------------------------------ assert.h ----------------------------------------------------

#ifdef _MSC_VER
	#ifdef NDEBUG
		#define ASSERT( expression, message )
	#else
		int display_assert_message( char const* expression, char const* message, char const* file, int line, 
			char const* function );
		#define ASSERT( expression, message ) \
			do { \
				if( !( expression ) ) { \
					if( display_assert_message( #expression, (message), __FILE__, __LINE__, __FUNCTION__ ) ) { \
						__debugbreak(); \
					} \
				} \
			} while( 0 )
	#endif
#else
	#include <assert.h>
	#define ASSERT( expression, message ) assert( expression && message )
#endif

//------------------------------------------ assert.c ----------------------------------------------------

#ifdef _MSC_VER
	#include <windows.h>
	#include <crtdbg.h>
	#include <stdio.h>

	int display_assert_message( char const* expression, char const* message, char const* file, int line, char const* function ) {
		#define ASSERT_DIVIDER "**********************************************************************"
	    static char buf[ 1024 ];
	    _snprintf( buf, 1000, "ASSERTION FAILED!\n\n%s\n\nExpression: %s\n\nFunction: %s\n\n%s(%d)\n", 
            message, expression, function, file, line );
	    OutputDebugStringA( "\n" ASSERT_DIVIDER "\n" );
	    OutputDebugStringA( buf );
	    OutputDebugStringA( ASSERT_DIVIDER "\n\n" );
	    printf( "\n" ASSERT_DIVIDER "\n" );
	    printf( "%s", buf );
	    printf( ASSERT_DIVIDER "\n\n" );
		strcat( buf, "\nBreak into debugger?\n" );
	    int result = MessageBoxA( 0, buf, "Assert", MB_ICONERROR | MB_YESNOCANCEL | MB_SYSTEMMODAL | MB_SETFOREGROUND );
	    switch( result ) {
		    case IDCANCEL: {
			    // Turn off memory leak reports for faster exit
			        #ifndef NDEBUG
				        int flag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG ); // Get current flag
				        flag ^= _CRTDBG_LEAK_CHECK_DF; // Turn off leak-checking bit
				        _CrtSetDbgFlag( flag ); // Set flag to the new value
			        #endif
			    _exit( EXIT_FAILURE ); // Exit application immediately, without calling crt's _atexit
			} break;
		    case IDYES: {
			    return 1; // Break to editor
			} break;
		    case IDNO: {
			    return 0; // Continue execution
			} break;
		}
		return 0;
		#undef ASSERT_DIVIDER
	}
#endif