Hi Paul,
>> DECLARE INTEGER BS_ReadLogCache IN BS_SDK.DLL INTEGER handle, INTEGER
>> @numOfLog, STRING @logRecord
>>
>> result = BS_ReadLogCache(lnhandle, @lnNumOfLog, @lcBuffs)
>>
>> lnNumOfLog : returns integer 2 when I record my finger on device
>> lcBuffs : garbage value
> Your syntax looks OK. What should lcBuffs return? Are you sure it's
> garbage?
Thanks for reply. From VFP I got garbage values which can be displayed on
screen but can't copied to _cliptext to paste here.
See this sample code of VB which returns text values from the device.
************* VB Code *************
Dim numoflogs As Long
Dim result As Long
result = BS_SDK.BS_ReadLogCache(handle, numoflogs, logRecord(0))
If numoflogs > 0 Then
For i = 0 To numoflogs - 1
If logRecord(i).event = "55" Then
Dim eventdatetime As Date
eventdatetime = DateAdd("s", logRecord(i).eventTime, "1/1/1970")
RaiseEvent OnData(mTCPAddress + "," + CStr(logRecord(i).userID) +
"," + Format(eventdatetime, "dd/mm/yyyy HH:mm:ss"))
End If
Next
End If
*********** END CODE ***************
and the result is like this
138,192.168.0.241,0,13/02/2011,07:28:24
55,192.168.0.241,271,13/02/2011,07:28:24
Why VFP is not getting text output as in VB 6?
I attached the Debug Locals window jpg file with my message.
TIA
Naeem
> On Mon, Feb 14, 2011 at 12:30 PM, <[email protected]> wrote:
>> Hi,
>>
>> I want to convert this following c/c++ code into vfp. This code is
>> provided by the Biometric TA SDK.
>>
>> Their .NET/VB sample is working fine. But VB ocx control has some
>> strange
>> problem in vfp. Sometimes, when I open the form to receive input from
>> the
>> device through this ocx, it does not capture data. If I minimize the
>> form
>> or vfp main window then it starts pulling/receiving the previous data
>> (no
>> idea where vfp hold it in).
>>
>> Now I want to use this ocx directly in vfp by calling its dll directly.
>> So
>> I need the following code conversion in vfp.
>>
>> C/C++ code
>> ========================
>> typedef struct {
>> unsigned char event;
>> unsigned char reserved1;
>> unsigned short tnaEvent;
>> time_t eventTime;
>> unsigned userID;
>> unsigned reserved2;
>> } BSLogRecord;
>>
>>
>> BSLogRecord logRecords[128];
>
> This creates an array of 128 BSLogRecords. The size of BSLogRecord is
> 1+1+2+(4)+4+4 = 16.
> Note: I'm assuming time_t is 4 bytes on Windows, but it may be 8.
>
>> I tried this in vfp as
>>
>> lnhandle = 0
>> lnNumOfLog = 0
>> dime lcBuffs(128)
>>
>> *- if lcBuffs = space(16)+chr(0) then vfp crash so it stored more space.
>> store space(254)+chr(0) to lcBuffs
>
> Looks like you need to allocate more space. Try 128 * 16 bytes.
>
>> DECLARE INTEGER BS_ReadLogCache IN BS_SDK.DLL INTEGER handle, INTEGER
>> @numOfLog, STRING @logRecord
>>
>> result = BS_ReadLogCache(lnhandle, @lnNumOfLog, @lcBuffs)
>>
>> lnNumOfLog : returns integer 2 when I record my finger on device
>> lcBuffs : garbage value
>>
>> What will be the correct syntax in vfp?
>> DECLARE INTEGER BS_ReadLogCache IN BS_SDK.DLL INTEGER handle, INTEGER
>> @numOfLog, STRING @logRecord
>>
>> result = BS_ReadLogCache(lnhandle, @lnNumOfLog, @lcBuffs)
>>
>> lnNumOfLog : returns integer 2 when I record my finger on device
>> lcBuffs : garbage value
> Your syntax looks OK. What should lcBuffs return? Are you sure it's
> garbage?
>
> --
> Paul
>
[excessive quoting removed by server]
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