檢測SD卡硬件的驅動器號

Question

有沒有一種方法可以在Windows上以編程方式檢測SD卡的驅動器號？該方法是否支持內部和外部SD卡硬件？感謝您的時間。

Answer 1

您可以嘗試GetLogicalDriveStrings獲取驅動器號，然後使用GetDriveType來查看驅動器是否可移除。然後你可以得到更多這樣的設備信息（例如CD-ROM，但應該顯示你的想法）：

//handle to the drive to be examined 
HANDLE hDevice = CreateFile(TEXT("\\\\.\\G:"), //Drive to open 
GENERIC_READ|GENERIC_WRITE, //Access to the drive 
FILE_SHARE_READ|FILE_SHARE_WRITE, //Share mode 
NULL, //Security 
OPEN_EXISTING,0, // no file attributes 
NULL); 

if (hDevice == INVALID_HANDLE_VALUE) return 0; 

CDROM_TOC val; // table of contents for a generic CDROM 
DWORD nBytesReturned; 

BOOL bResult= DeviceIoControl(
hDevice, 
IOCTL_CDROM_READ_TOC,//operation to perform 
&val, sizeof(val),//no input buffer 
&val, sizeof(val),//output buffer 
&nBytesReturned,//#bytes returned 
(LPOVERLAPPED) NULL);//synchronous I/O 

CloseHandle(hDevice);