A strange issue with container and child form? Please guide me

Merged with Controls in container form come over child form? .

In a container form I have menu and buttons to open ther forms.

Here I am facing a problem when I open any form these buttns and lables 开发者_Python百科come over newly opened form.

Please guide me how I can manage this issue ? I want to open a new form and keep these container form's controls in back ground of it.

thanks for guiding and helping me.