Michael: doesn't works, or I don't achieve to make it works

I'm writing code for rotate an image, and I'm trying to use the PlgBlt API function, this needs to receive an array of structure X: long, Y: long

I haven't success by the moment with my tries, with many kinds of manners... I'm desperate and really needs do it, for exclude the use of any ActiveX or OCX, that's forbidden by the policies of the company

Hi Roland,

You can just pass the structure object; everything else can be obtained at PBNI side (structure classname, list of fields).

You can also if you want to avoid storing the field name, store the FieldId (asking to the right PBNI api function).

But storing ids rather than names would not works well if you want to recreate a structure which definition have changed using a serialisation of a previous version (as fieldids may changed).

Nicolas.

Nicolas,

I created a PBNI non-visual extension. The function arguments are:

any astr_structure        The structure

string as_structname    Name of the structure

string as_element[]      Array of element names

The function serializes the structure in a custom format which includes the structure name, the name of the elements, and the data value for each element.

The string is transmitted to another program that uses PBNI to recreate the structure with each element containing the data value it had in the first program.

I wish there was a way to refer to the structure fields (elements) by number instead of by name. Then I wouldn't have to send the names.

Roland

Hi Roland,

for your project you may have a look at this code which is relying on a PBNI too ( CWGetField ).

It can serialize an object, structure, array, scalar into json.

Regards, Nicolas (xlat).

Hi Roland;

   Only as an ANY variable. In my Apps though, I always re-cast the Any back to a concrete (known) structure. I have really never tried to support a "generic" structure argument.

  I you attach a simple test case to this thread or open a support ticket - then we can try and look for a workaround for you. I have personally never tried to do your approach.

Regards ... Chris

I just tried ANY and it works. Thanks!

Now I have an additional question I need to figure out. Can I use class def functions at runtime to get the element datatypes and values without assigning the any argument to the specific structure. I will be passing a second argument which is the name of the structure in a string.

Hi Roland;

   Have you tried using a parameter(s) declared as ANY?

Regards ... Chris

Hi Roland,

I would expect datatype = ANY would allow you to pass any struct. I haven't tried to pass a struct as ANY to a WinAPI function. There may other issues  involved.

HTH /Michael