检测SD卡硬件的驱动器号

Question

有没有一种方法可以在Windows上以编程方式检测SD卡的驱动器号？该方法是否支持内部和外部SD卡硬件？感谢您的时间。

Answer 1

您可以尝试GetLogicalDriveStrings获取驱动器号，然后使用GetDriveType来查看驱动器是否可移除。然后你可以得到更多这样的设备信息（例如CD-ROM，但应该显示你的想法）：

//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);