You cannot do this. You will have to do this using the functions instead. Internally, the DDX_xxx wrappers do exactly this. So for controls created dynamically you will have to do this yourself. «_Superman_»  _I love work. It gives me something to do between weekends. _Microsoft MVP (Visual C++) Polymorphism in C

does anybody know reason fot this?

Thank you! I thought there might be a way to generate the uid along with the header creation. In the above all replies we've to get uid separately and then append it to the header macro separately....