i need create mmap of file. since windows not support mmap, tried mapviewoffile() method. fails.
here's code :
char template[1024]; snprintf(template, sizeof(template) / sizeof(char), "%s", "c:\\users\\ijas\\downloads\\ijas.txt"); handle hfile = createfile(template, generic_read | generic_write, 0, null, open_existing, file_flag_random_access, null); if (hfile == invalid_handle_value) { fprintf(stderr, "createfile() error 0x%08x \n", getlasterror()); return null; } handle map_handle = createfilemapping(hfile, null, page_readwrite | sec_reserve, 0, 0, 0); if (map_handle == null) { fprintf(stderr, "createfilemapping() error 0x%08x\n", getlasterror()); closehandle(hfile); return null; } sp = (char*)mapviewoffile(map_handle, file_map_write | file_map_read, 0, 0, 0); if (sp->buffer == null) { fprintf(stderr, "mapviewoffile() error 0x%08x\n", getlasterror()); closehandle(hmapfile); closehandle(hfile); return null; } output :
createfile() error 0x00000003 hint : template existing file.
anything wrong in code? please me out?
as discussed in comments, various possibilities of try-and-hit, problem seems unicode , ansi. template declared char* passed createfile default calls createfilew. if op have compiled code c++ compiler, compiler have complained c compiler, relied on coder's intellect.
createfilea expects const char* whereas createfilew expects const wchar_t*
