c++ - 检测SD卡硬件盘符

Question

有没有办法在 Windows 上以编程方式检测 SD 卡的驱动程序号？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查看驱动器是否可移动。然后您可以获得更多这样的设备信息（示例是 cd-rom，但应该向您展示这个想法）：

//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);