windows 之磁碟空間剩餘空間監測
監測軟體當前目錄的磁碟剩餘量是否達到1GB
bool SdLoginManager::checkDiskCapacity()
{
bool res = true;
BOOL fResult;
unsigned _int64 i64FreeBytesToCaller;
unsigned _int64 i64TotalBytes;
unsigned _int64 i64FreeBytes;
int freespace = 0;
float totalspace = 0;
wchar_t szExePath[MAX_PATH] = { 0 };
GetModuleFileNameW
wchar_t rootPaht[64] = {0};
if (lstrlen(szExePath) <= 0)
{
SdLog("get the curentdir with error %d",GetLastError());
return res;
}
wcsncpy(rootPaht,3);
fResult = GetDiskFreeSpaceEx(rootPaht, //獲取磁碟剩餘空間大小，總大小.
(PULARGE_INTEGER)&i64FreeBytesToCaller,
(PULARGE_INTEGER)&i64FreeBytes);
if (fResult)
{
totalspace = (float)i64TotalBytes / 1024 / 1024 / 1024;
freespace = (float)i64FreeBytes / 1024 / 1024 / 1024;
}
if (!freespace)
{
res = false;
}
return res;
}
以上結合cmd:> fsutil file createnew E:\text.txt 1024000000
上述命令生成1GB txt具體大小自己定義，然後進行測試，別生成在C盤即可.
具體api詳情轉ms手冊：
https://docs.microsoft.com/en-us/windows/win32/api/libloaderapi/nf-libloaderapi-getmodulefilenamew
https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getdiskfreespaceexa