效果
源碼
#include
#include
#include
#include
#include
#define BUFSIZE 512
//從文件句柄獲取文件路徑
BOOL GetFileNameFromHandle(HANDLE hFile){
TCHAR pszFileName[MAX_PATH];
HANDLE hFileMap;
PVOID pMem;
//蝴蝶文件大小
DWORD dwFileSizeHigh = 0;
DWORD dwFileSizeLow = GetFileSize(hFile, &dwFileSizeHigh);
if (dwFileSizeLow == 0 && dwFileSizeHigh == 0){
printf("不能映射文件大小為0的文件\n");
return FALSE;
}
//創(chuàng)建Mapping對(duì)象
hFileMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
if (!hFileMap){
printf("創(chuàng)建文件映射對(duì)象失敗: %d\n", GetLastError());
return FALSE;
}
pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
if (!pMem){
printf("文件映射視圖錯(cuò)誤: %d\n", GetLastError());
return FALSE;
}
//從Mapping對(duì)象獲得文件名
if (GetMappedFileName(GetCurrentProcess(), pMem, pszFileName, MAX_PATH) == 0){
printf("獲得映射文件名錯(cuò)誤: %d\n", GetLastError());
return FALSE;
}
//將設(shè)備名轉(zhuǎn)換為路徑
TCHAR szTemp[BUFSIZE] = { 0 };
if (GetLogicalDriveStrings(BUFSIZE - 1, szTemp) == 0){
printf("GetLogicalDriveStrings函數(shù)出錯(cuò): %d\n", GetLastError());
return FALSE;
}
TCHAR szName[MAX_PATH];
TCHAR szDrive[3] = { 0 };
BOOL bFound = FALSE;
PTCHAR p = szTemp;
do{
CopyMemory(szDrive, p, 2 * sizeof(TCHAR));
//通過路徑查找設(shè)備名
if (!QueryDosDevice(szDrive, szName, BUFSIZE)){
printf("通過路徑查找設(shè)備名出錯(cuò): %d\n", GetLastError());
return FALSE;
}
UINT uNameLen = lstrlen(szName);
if (uNameLen< MAX_PATH){
//比較驅(qū)動(dòng)器設(shè)備名與文件設(shè)備名是否匹配
bFound = strncmp(pszFileName, szName, uNameLen) == 0;
if (bFound){
//如果匹配,說明找到,構(gòu)造路徑
TCHAR szTempFile[MAX_PATH];
wsprintf(szTempFile, TEXT("%s%s"), szDrive, pszFileName + uNameLen);
lstrcpy(pszFileName, szTempFile);
}
}
while (*p++);//循環(huán)到下一個(gè)NULL
} while (!bFound && *p);
UnmapViewOfFile(pMem);
CloseHandle(hFileMap);
printf("文件路徑為: %s\n", pszFileName);
return TRUE;
}
int main(int argc, PCHAR argv[]){
//查找第一個(gè)目錄中第一個(gè)txt文件
HANDLE hFile;
HANDLE hFind;
WIN32_FIND_DATA wfd;
hFind = FindFirstFile("*.txt", &wfd);
if (hFind == INVALID_HANDLE_VALUE){
printf("沒有找到文件\n");
return 1;
}
//CloseHandle(hFind);
printf("找到 %s 文件路徑\n", wfd.cFileName);
hFile = CreateFile(wfd.cFileName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE){
printf("創(chuàng)建文件錯(cuò)誤: %d\n", GetLastError());
} else{
GetFileNameFromHandle(hFile);
}
CloseHandle(hFile);
getchar();
return 0;
}
