It appears that sliders don’t work correctly in 4.8
You cannot drag the slider while holding the mouse. It only changes value if you click inside it. When I watch older videos of someone using a slider, it appears that you can just easily hold mouse button and drag it left and right, which is not possible in 4.8
Repro:
Open UMG widget
Insert slider
Edit HUD, add widget to viewport
Run in Editor
Try to hold mouse button to drag left / right
Sorry for this, it was my own mistake.
The HUD was constantly resetting, because of the way I have set it up. I’ve fixed it by checking if the player actually wants to change the current widget and if so, only change to the desired widget once.
I’m getting this issue now with UE 4.10. I have a custom asset viewer (very like the static mesh editor) with a slider in a toolbar that, when the value is changed, creates a new static mesh from the custom asset. The resulting static mesh is then set as the new preview mesh via the same kind of flow as the static mesh editor setPreviewMesh. In doing this, the slider stops sliding and I have to click in it to get new values rather than sliding. Do you have suggestions as to how to handle/debug this issue? Note, if I don’t rebuild the mesh, the slider works just fine. Except, that nothing else happens, of course.