[SOLVED] How to check whether inserted SD Card is write protected or not in Qt?

Stoned Jesus

Hi friends I am working on an application where I should check the file system of the SD card and also I need to check whether the SD card inserted is write protected or not. I was successful in getting the file system details as follows:

@TCHAR volumeName[MAX_PATH + 1] = { 0 };
TCHAR fileSystemName[MAX_PATH + 1] = { 0 };
DWORD serialNumber = 0;
DWORD maxComponentLen = 0;
DWORD fileSystemFlags = 0;

LPCWSTR path = deviceData->m_strPath.utf16(); // deviceData gives me the path of the SD Card

// Get the file system details
if (GetVolumeInformation(
                         path,
                         volumeName,
                         ARRAYSIZE(volumeName),
                         &serialNumber,
                         &maxComponentLen,
                         &fileSystemFlags,
                         fileSystemName,
                         ARRAYSIZE(fileSystemName)))
            {
                newData.strFileSystem = QString::fromUtf16(fileSystemName);                
            }

 m_SDInfoList.append(newData); // m_SDInfoList is QList@

With this approach I get to know whether the file system is FAT32 or NTFS. Now I want to achieve the write protected details. Is their a Qt API that can gimme whether the inserted SD Card is write protected or not??? Please help :)

Update:

This is what I did using QFileInfo:

@QFileInfo fileInfo(deviceData->m_strPath);

if(!fileInfo.isWritable())
{
newData.strStatus = "WriteProtect Enabled";
}
else
{
newData.strStatus = "WriteProtect Disabled";
}@

It always ends up giving me WriteProtect Disable even though I have set the write protected permission. Am I missing something??

Stoned Jesus

I have updated the question. Please check :)

sierdzio

There are classes in QtSensors and in some external projects (QDriveInfo?) that would help you here. I think it returns false for ::isWritable() because you do not point to a valid file path (it's the path to the device, but not a potential file).

Stoned Jesus

Thanks sierdzio :)

[quote author="sierdzio" date="1366697003"]There are classes in QtSensors and in some external projects (QDriveInfo?) that would help you here. I think it returns false for ::isWritable() because you do not point to a valid file path (it's the path to the device, but not a potential file).[/quote]