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Browse - Programming Tips - How can I convert the result of an GetOpenFileName() with OFN_ALLOWMULTISELECT into something useful?

Date: 2008jul10
Language: C++
Platform: win32

Q.  How can I convert the result of an GetOpenFileName() with OFN_ALLOWMULTISELECT into something useful?

A.  Here is a function that does just that.

#include <vector> #include <algorithm> typedef std:vector<std::string> STRING_ARRAY; void ConvertMultiToArray(LPCSTR big, STRING_ARRAY &a) { char szDir[MAX_PATH] = ""; char szFile[MAX_PATH]; LPCSTR p; a.clear(); for (p = big; *p; p += lstrlen(p) + 1) { if (szDir[0] == '\0') { lstrcpyn(szDir, p, sizeof(szDir)); } else { _snprintf(szFile, sizeof(szFile), "%s\\%s", szDir, p); a.push_back(szFile); } } // If there is only one file its here if (a.size() == 0 && szDir[0] != '\0') { a.push_back(szDir); } // The file names come back in an unpredictable order (not reversed) so sorting is the best we can do - thanks Microsoft std::sort(a.begin(), a.end()); } ExampleUse() { OPENFILENAME ofn; char big[50000]; ofn.lpstrFile = big; ofn.nMaxFile = sizeof(big); ofn.Flags = /* ... flags you want ... */ | OFN_ALLOWMULTISELECT; // ... Fill other stuff in ofn ... if (GetOpenFileName(&ofn)) { STRING_ARRAY a; ConvertMultiToArray(big, a); for (STRING_ARRAY::const_iterator it = a.begin(); it != a.end(); it++) { printf("file=%s\n", it->c_str()); } } }

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