WinForms - Import functions from .h to others .h

[glararan]

Hi... i have Form1.h, in this form i have functions on Open, Exit,... i do Launcher with Auto updates. But i have problem...i need import functions from Form1.h to UpdateForm.h...I including Form1.h to UpdateForm.h..but it doesn't work.

Is any think how i can solved it?

I have idea to copy functions..but it's launcher so i don't want too much slow him and create bigger size.

Launcher what i do...have functions: Open, Install, Exit, Auto Update( here is problem )