Why does the mdlElmdscr_new function not operate?

Can you paste your code snippet ? The mdlElmdscr_new function normally is used to convert an MSElement to MSElementDescrP. For example, the following code snippet set an new created element's display priority:

MSElement       el;
MSElementDescrP edP = NULL;
......
mdlShape_create (&el, NULL, ...);
mdlElmdscr_new (&edP, NULL, &el);
mdlElmdscr_setDisplayPriority(edP,100);
mdlElmdscr_add(edP);
mdlElmdscr_freeAll(&edP);

HTH, YongAn

Unknown said:

I use the mdlElmdscr_new function, but it does not aperate and it lunchs an exception.

This means you have a pointer problem. As Yongan said, if you post a code snippet, it will give us more information about how to fix the problem.