With a vertical casement, you have to move the mouse around to find the proper angle to adjust the window, but you can use the mouse wheel or a joystick to adjust it.
However, a horizontal window works just as well for Windows 7 or 8.1, because it works with both vertical and horizontal casements.
The advantage of a horizontal mouse cursor is that you can click and drag anywhere on the screen and the window will be adjusted automatically.
But the disadvantage is that it doesn’t work with any other Windows 8.x or 8 Windows 7 applications.
There are a number of ways to fix this.
For example, if you use a virtual desk that supports vertical casements, you can move the cursor around to see the best position to adjust a window.
If you are in a small room, you might find that it makes sense to move your cursor to the top of the window and adjust it, rather than adjusting the window with a mouse.
Alternatively, if your monitor supports horizontal casings, you may need to use a different software for adjusting the windows.