Dave Doknjas wrote:<\/p>\n
><\/p>\n
>(note that both of these are very Microsoft specific)<\/p>\n
Of course they are, since the subject is a Windows API.<\/p>\n
>native C++: private:<\/p>\n
>__declspec(dllimport) static long long URLDownloadToFile(long long pCaller, std::string szURL, std::string szFileName, long long dwReserved, long long lpfnCB);<\/p>\n
That’s wrong in virtually every respect. There are no Microsoft APIs that<\/p>\n
accept a std::string. Those need to be either “const char *” or “const<\/p>\n
wchar_t *” depending on the character set. The return value and dwReserved<\/p>\n
should both be just plain “long”, and pCaller and lpfnCB should both be<\/p>\n
“void *”.<\/p>\n
>C++\/CLI: private:<\/p>\n
>[System::Runtime::InteropServices::DllImport(“urlmon”, EntryPoint=”URLDownloadToFileA”, ExactSpelling=true, CharSet=System::Runtime::InteropServices::CharSet::Ansi, SetLastError=true)]<\/p>\n
>static Int64 URLDownloadToFile(Int64 pCaller, String ^szURL, String ^szFileName, Int64 dwReserved, Int64 lpfnCB);<\/p>\n
><\/p>\n
>You could include the appropriate header file, but that’s likely to bring in a lot of clutter you don’t need.<\/p>\n
That’s really bad advice for a Windows API. Windows APIs are almost never<\/p>\n
used in isolation. If he needs URLDownloadToFile, then he almost certainly<\/p>\n
needs the “clutter”.<\/p>\n
—<\/p>\n
Tim Roberts, timr@probo.com<\/p>\n
Providenza & Boekelheide, Inc.<\/p>\n","protected":false},"excerpt":{"rendered":"
Dave Doknjas wrote: > >(note that both of these are very Microsoft specific) Of course they are, since the subject is a Windows API. >native C++: private: >__declspec(dllimport) static long long URLDownloadToFile(long long pCaller, std::string szURL, std::string szFileName, long long dwReserved, long long lpfnCB); That’s wrong in virtually every respect. There are no Microsoft APIs […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4314","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=4314"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4314\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}