找不到指定的路径：CreateDirectoryW
VS2015，Unicode:获取无法找到指定路径的错误，请在列表框中运行以下代码：找不到指定的路径：CreateDirectoryW,c,winapi,path,nested,prefix,C,Winapi,Path,Nested,Prefix,VS2015，Unicode:获取无法找到指定路径的错误，请在列表框中运行以下代码： wchar_t *currPath, *cumPath; int listTotal = 5; int pathLength = 32760; listTotal = SendMessageW(hList, LB_GETCOUNT, 0, 0); wcscpy_s(cumPath, pathLength, L"\\\\?\\C:\\"); //wcscpy_s(cumPath, pathLength, L"C:
wchar_t *currPath, *cumPath;
int listTotal = 5;
int pathLength = 32760;
listTotal = SendMessageW(hList, LB_GETCOUNT, 0, 0);
wcscpy_s(cumPath, pathLength, L"\\\\?\\C:\\");
//wcscpy_s(cumPath, pathLength, L"C:\\"); //Tried this, no difference
wcscpy_s(currPath, MAX_PATH - 3, L"");
for (int i = 0; i < listTotal; i++) {
SendMessageW(hList, LB_GETTEXT, i, (LPARAM) currPath); //"My Nested Path" picked up from textbox OK
wcscat_s(cumPath, pathLength, (wchar_t *) currPath);
\\OK but doubled backslashes
wcscat_s(cumPath, MAX_PATH - 3, __TEXT("\\"));
\\appear in debugger variable contents
}
int errorcode = CreateDirectoryW(cumPath, NULL);
if (errorcode == 0) {
ErrorExit(TEXT("CreateDirectoryW"));
//GetLastError courtesy [MSDN][1]
}
currPath = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
...
free(currPath);
//wcscat_s(cumPath, MAX_PATH - 3, __TEXT("\\"));
第一个问题是cumPath没有指向任何分配的内存 wcscpy_s函数期望目标是一个足够大的字符数组，可以容纳源字节 以下是wcscpy手册页的相关摘录 描述 wcscpy函数是strcpy3的宽字符等价物 作用它复制src指向的宽字符串， 将终止的空宽字符L'\0'包括到数组中 由dest指向
The strings may not overlap.
The programmer must ensure that there is room for at least
wcslen(src)+1 wide characters at dest.
系统处理C编译的嵌套目录字符串的方式似乎有问题。 C++中没有类似的词， 这里的解决方案是在每次新目录迭代中更改当前目录：
#include <Windows.h>
#include <Strsafe.h>
void ErrorExit(LPCTSTR lpszFunction)
{
DWORD dww = 0;
LPVOID lpMsgBuf;
LPVOID lpDisplayBuf;
dww = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dww,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf,0, NULL);
lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT, (lstrlen((LPCTSTR)lpMsgBuf) + lstrlen((LPCTSTR)lpszFunction) + 40) * sizeof(TCHAR));
StringCchPrintf((LPTSTR)lpDisplayBuf, LocalSize(lpDisplayBuf) / sizeof(TCHAR), TEXT("%s failed with error %lu: %s"), lpszFunction, dww, lpMsgBuf);
MessageBox(NULL, (LPCTSTR)lpDisplayBuf, "Error", MB_OK);
LocalFree(lpDisplayBuf);
LocalFree(lpMsgBuf);
}
int main()
{
wchar_t *currPathW, *cumPathW;
int listTotal = 2;
int errorcode;
int pathLength = MAX_PATH - 3;
int stripLen;
currPathW = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
cumPathW = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
wcscpy_s(cumPathW, pathLength, L"\\\\?\\C:\\");
wcscpy_s(currPathW, MAX_PATH - 3, L"NestedPath");
for (int i = 0; i < listTotal; i++) {
wcscat_s(cumPathW, pathLength, (wchar_t *) currPathW);
//OK but doubled backslashes
wcscat_s(cumPathW, MAX_PATH - 3, L"\\");
//appear in debugger variable contents
int errorcode = CreateDirectoryW(cumPathW, NULL);
if (errorcode == 0) ErrorExit("Failed: ");
}
//wchar_t * currPathWtmp = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
wchar_t * currPathWtmp;
currPathWtmp = cumPathW;
stripLen = wcslen(currPathWtmp)- wcslen(L"NestedPath") - 1;
for (int i = 0; i < listTotal; i++) {
int errorcode = RemoveDirectoryW(currPathWtmp);
if (errorcode == 0) ErrorExit("Failed: ");
currPathWtmp [stripLen] = 0;
}
//currPathWtmp = NULL;
free(currPathW);
free(cumPathW);
}
Edit3:现在应该立即编译这个。一切正常！实际上，它适用于listTotal的许多值。还有别的事情发生。这行：wcscpy\u scumPath，pathLength，L\\\？\\C:\\；正在复制到未指向特定位置的指针。结果是未定义的行为。您真正需要的是学习一些调试技巧。首先计算出传递给api函数的值。哎哟：我需要的是更好的解决SO问题的技巧。给listTotal一个值。添加了两个变量的callocs。然而，callocs做了一些不合法的事情。问题已更新。是否在代码中使用MAX_路径是问题所在？这只是一个简单的问题。您自己的路径长度要大得多，警告！随机猜测！在未来十年内可能足够了。这是一个想法：通过将\\放在列表框字符串中来摆脱wscat。但不是，同样的问题+1.为了这个想法：想知道如果资源管理器终止，这是否有效。
#include <Windows.h>
#include <Strsafe.h>
void ErrorExit(LPCTSTR lpszFunction)
{
DWORD dww = 0;
LPVOID lpMsgBuf;
LPVOID lpDisplayBuf;
dww = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dww,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf,0, NULL);
lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT, (lstrlen((LPCTSTR)lpMsgBuf) + lstrlen((LPCTSTR)lpszFunction) + 40) * sizeof(TCHAR));
StringCchPrintf((LPTSTR)lpDisplayBuf, LocalSize(lpDisplayBuf) / sizeof(TCHAR), TEXT("%s failed with error %lu: %s"), lpszFunction, dww, lpMsgBuf);
MessageBox(NULL, (LPCTSTR)lpDisplayBuf, "Error", MB_OK);
LocalFree(lpDisplayBuf);
LocalFree(lpMsgBuf);
}
int main()
{
wchar_t *currPathW, *cumPathW;
int listTotal = 2;
int errorcode;
int pathLength = MAX_PATH - 3;
int stripLen;
currPathW = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
cumPathW = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
wcscpy_s(cumPathW, pathLength, L"\\\\?\\C:\\");
wcscpy_s(currPathW, MAX_PATH - 3, L"NestedPath");
for (int i = 0; i < listTotal; i++) {
wcscat_s(cumPathW, pathLength, (wchar_t *) currPathW);
//OK but doubled backslashes
wcscat_s(cumPathW, MAX_PATH - 3, L"\\");
//appear in debugger variable contents
int errorcode = CreateDirectoryW(cumPathW, NULL);
if (errorcode == 0) ErrorExit("Failed: ");
}
//wchar_t * currPathWtmp = (wchar_t *)calloc(pathLength, sizeof(wchar_t));
wchar_t * currPathWtmp;
currPathWtmp = cumPathW;
stripLen = wcslen(currPathWtmp)- wcslen(L"NestedPath") - 1;
for (int i = 0; i < listTotal; i++) {
int errorcode = RemoveDirectoryW(currPathWtmp);
if (errorcode == 0) ErrorExit("Failed: ");
currPathWtmp [stripLen] = 0;
}
//currPathWtmp = NULL;
free(currPathW);
free(cumPathW);
}