How to create QDialog using Qt creator
How to create QDialog using Qt Creator and add to my source code
i guess you already have a project with a .pro file, headers and sources and you want to add an additional dialog with associated header and source file?
ok in this case what you can do is the following :
file > new file or project >
on the left under files and classes select "Qt", then you can choose on the right for "Qt designer form class".
this will generate ui, h and cpp files for you and will add everything in your pro file.