GPI extension: channel name truncate

[Fred91]

Hi,

I used the hDataObjChannelGet() function to create a channel in the Data Portal. But I notice that all names are truncated to 17 characters.

Is it a limitation of the GPI Extension?

What is the better solution to implement a channel name up to 50 characters ?

Best regards,

Fred

[Thomas_Becker]

Hi,

please use the GPI Function "hDataObjChannelGetW" instead of "hDataObjChannelGet" in a way like this:

  hDataObjChannelGetW(L"N_23456789N_23456789N_23456789N_23456789N_23456789N_23456789XXX",
                                         1024,
                                         1,
                                         eChannelDataTypeReal64,
                                         0);

Thomas

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:28 PM

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:27 PM

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:27 PM

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:25 PM

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:25 PM

[Fred91]

Message Edité par Fred91 le 01-24-2008 12:24 PM

[Fred91]

Thank you for the answer.

Two more questions:

   1. What is the best way to convert my CString in TDataWChar ?

    2. What is the difference between eDataObjCommentarySetW and eDataObjCommentarySetTDataWChar ?

Best regards,

Frederic

Message Edité par Fred91 le 01-24-2008 12:23 PM

[Twigeater]

Hello Frederic!

To convert a CString to Unicode you can use this code:

WCHAR* wszCommandT;
int    nLenT;
 
// determine the buffer size
nLenT = MultiByteToWideChar(CP_ACP, 0, sgCommand, -1, NULL, NULL);
 
// allocate result buffer
wszCommandT = new WCHAR[nLenT];
 
// Convert the string from ANSI to Unicode
nLenT = MultiByteToWideChar(CP_ACP, 0, sgCommand,-1,wszCommandT,nLenT);
 
if( nLenT > 0)
{
  // do something ...
}
 
// free result buffer
delete wszCommandT;
 

You can replace WCHAR with TDataWChar if you want.

Matthias