Visual Studio LVUserEvent Message Cluster

[dgd.gomez]

Hi, It is possible to use a queue to exchange messages between a .dll and LabVIEW? Yes. Check image.

It is posilbe that the data contained in a cluster and are variant? You can convert a data to variant in .dll and convert a variant data to data labview?

And I tried to implement a function with the following code, but I err when I run LabVIEW.

#pragma pack (push,1)
typedef struct
{
 LStrHandle newStringHandle;
 LvVariant* Data;
} MessageCluster;
#pragma pack(pop)

...

MessageCluster Message;

...

PostLVUserEvent(*rwer, (void*)&Message);

Thank you very much.

[rolfk · Accepted solution]

No, the variant C API is not documented and therefore there is no way to create, query, modify or otherwise use them from C code, if you are not an NI developer. Use the documented datatypes instead.