Do not talk nonsense, straight to the point:
As shown below
I created a few Slider, then I can not find these pointers ui Slider in the slot with function
Solution:
If the pointer is not shown above ui components you want to use to find the words to build on the first click on the map, you will first build the project again, your project is loaded into the editor,
So you can find the components you want the pointer by ui.
I think this question should be qt remains to be the perfect place to go, some components need to be loaded into the editor, then for ui pointer is visible.
If wrong, please correct me!