As you can see from the attached image.
Here's a composite of screenshots, layed out in the same sequence of two of my three monitors. On the left, the pop-up is clipped, and on the right, it's not clipped:
- Side by Side composite of screenshots of a clipped and non-clipped pop-up box.
- ss_SideBySide_clippedPopup01.png (42.44 KiB) Viewed 2398 times
The black region at the top of the left screenshot was put there by Win 10, when it constructed the three monitor "Print Scrn" screenshots that I used to create the composite image. That might be a hint as to the source of this problem -- for instance, if you're placing those pop-ups at coordinates (0,0), perhaps Win10 puts (0, 0) at different levels for different monitors, and because it, for some strange reason, puts (0,0) at the top of that black region [which doesn't, actually, show up on my monitor], thus the top portion of the box is cut off! Maybe you need to place pop-ups at, for instance, (0, 28) or (28,28) -- OR -- you need to learn how Win10 judges where (0,0) is, on each monitor.
In other words: it seems that, for some odd reason, Win10 places (0,0) at a point 28 pixels above the "viewport" on my middle monitor -- so (0,0) floats above the viewable region on my middle monitor, whereas, on my right-hand monitor, (0,0) is at the upper left corner of the viewable area!
The really annoying thing about this is: the dragbar is unavailable--because it's cropped off!!! There is no way to drag the box down!!!
Here's another screenshot of all three monitors--complete:
Notice how my left two monitors ride low, in the mind of WIN10, and my right most monitor rides high [judging by the black regions -- which, again, do not appear on my monitors at all!
