Convert a QByteArray to a QVariantList

[wysota]

I can't help you because I don't know what the call expects. Contact the authors of the DLL and ask them. Nobody here will be able to guess what the contents of the list should be just by looking at the function name.

[franco.amato]

I can't help you because I don't know what the call expects. Contact the authors of the DLL and ask them. Nobody here will be able to guess what the contents of the list should be just by looking at the function name.

I already contacted the author and it gave to me a doc containing the routines list.
The routine I have to call is named

RegUserData

.

I list here the parameters wanted by such routine:

CardID(string/10)
OverWrite(0: no overwrite. If ID is already registered, return with result 06.,1: overwrite.)
idxDesignation
idxDepartment
FirstName(string /15)
LastName(string /15)
idxGroup (integer/0~255)
Status(1: Activate, 0: Deactivate)
WorkMode(0:finger+pass ,1:finger,2ass,3:finger or pass,4:Only Crad,5:Only from external Reader,6:Matching on Mifare card)
WorkTimeStart()
WorkTimeEnd()
EmployeeID
RegisterMode( Finger =1, Password = 2, Finger and Password = 3, Card=4, Max=4)
CheckExpire
ExpireDateStart
ExpireDateEnd
Password(string/10)
NF(Number of fingerprint data per user Max. 2)
TemplateSize
FingerData (byte,User Fingerprint data total size depends on the number of fingerprints registered per user)

The param that give problems to me is the last: FingerData, that should be an array of bytes nothing more.
When I generated the documentation with dumpcpp it says that I have to pass FingerData as QVariantList and here is where I would have your help.

Thanx in advance.

[franco.amato]

This is the output of generateDocumentation:

bool RegUserData(QString CardID, QVariantList FingerData, bool OverWrite = 0, int idxDesignation = 0, int idxDepartment = 0, QString FirstName = 0, QString LastName = 0, int idxGroup = 0, bool Status = 0, int WorkMode = 0, QString WorkTimeStart = 0, QString WorkTimeEnd = 0, QString EmployeeID = 0, int RegisterMode = 0, bool CheckExpire = 0, QDateTime ExpireDateStart = 0, QDateTime ExpireDateEnd = 0, QString Password = 0, int NF = 0, int TemplateSize = 0);

bool RegUserData(QString CardID, QVariantList FingerData, bool OverWrite = 0, int idxDesignation = 0, int idxDepartment = 0, QString FirstName = 0, QString LastName = 0, int idxGroup = 0, bool Status = 0, int WorkMode = 0, QString WorkTimeStart = 0, QString WorkTimeEnd = 0, QString EmployeeID = 0, int RegisterMode = 0, bool CheckExpire = 0, QDateTime ExpireDateStart = 0, QDateTime ExpireDateEnd = 0, QString Password = 0, int NF = 0, int TemplateSize = 0);

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You can see that it ask for FingerData as second param and of type QVariantList.

[franco.amato]

Well I think Qt can not solve this problem.
I have to implement it in C#

[wysota]

Well I think Qt can not solve this problem.

I'm sure it can, you just can't blindly do different things hoping that one thing you try might be the correct one. You need to read some documentation, maybe browse and analyze some code and develop a solution to your problem. You won't be given an answer on a silver platter.

I would guess (but only guess) the argument in question awaits a list of byte arrays where each byte array corresponds to a single fingerprint data. But again, that's just a guess based on some logical deduction.

[franco.amato]

I'm sure it can, you just can't blindly do different things hoping that one thing you try might be the correct one. You need to read some documentation, maybe browse and analyze some code and develop a solution to your problem. You won't be given an answer on a silver platter.

I would guess (but only guess) the argument in question awaits a list of byte arrays where each byte array corresponds to a single fingerprint data. But again, that's just a guess based on some logical deduction.

Wysota I don't want a solution on a silver plate. I only would convert a QByteArray to a QVariantList because I'm not able to do it. I tried many ways without success.
And yes the the argument in question awaits a list of byte arrays where each byte array corresponds to a single fingerprint data. This device store a fingerprint with 352 bytes so my QByteArray has 352 elements and I would convert this 352 elements of my QByteArray to a QVariantList.

Best

[wysota]

Wysota I don't want a solution on a silver plate. I only would convert a QByteArray to a QVariantList because I'm not able to do it. I tried many ways without success.

Because you first have to know what result you want to achieve before "trying many ways".

And yes the the argument in question awaits a list of byte arrays where each byte array corresponds to a single fingerprint data.

And how do you know that? Maybe it expects the number of byte arrays in the first cell of the list?

[franco.amato]

Because you first have to know what result you want to achieve before "trying many ways".


And how do you know that? Maybe it expects the number of byte arrays in the first cell of the list?

No, the number of byte arrays is in another cell called template size that's 352

NF(Number of fingerprint data per user Max. 2) //number of fingerprint per user ( maximum 2 )
TemplateSize //352
FingerData (byte,User Fingerprint data total size depends on the number of fingerprints registered per user) = templatesize * NF

[wysota]

If you are sure you are sending the parameters correctly then dive into the sourcecode of ActiveQt to see when the message you get is generated to see what the possible cause might be. So far we don't even know if it is Qt that generates this message or some other library underneath ActiveQt.

There is also another thing - if you have the dll, maybe you call the function directly instead of using COM?

[franco.amato]

If you are sure you are sending the parameters correctly then dive into the sourcecode of ActiveQt to see when the message you get is generated to see what the possible cause might be. So far we don't even know if it is Qt that generates this message or some other library underneath ActiveQt.

There is also another thing - if you have the dll, maybe you call the function directly instead of using COM?

Hi,
how can I call the function directly instead using COM? I don't have the associated *.lib and the dll is a com ( I have no experience with com )

[JD2000]

QImage ( const QByteArray & array )
QVariant::QVariant ( const QImage & val )

[franco.amato]

QImage ( const QByteArray & array )
QVariant::QVariant ( const QImage & val )

I already tried your idea JD2000 and it doesn't work.
Unfortunately I'm developing the source code in C# that I hate

[squidge]

how can I call the function directly instead using COM? I don't have the associated *.lib and the dll is a com ( I have no experience with com )

Check the exports of the DLL with a PE viewer. If the function is exported, you can link with it. You don't need the .lib