GUILayoutBeginVertical

GUILayoutBeginVertical is a function used in Unity's immediate mode GUI system. It signals the beginning of a vertical arrangement of UI elements. When you use GUILayoutBeginVertical, all subsequent GUI elements that are placed within the scope of this function will be stacked on top of each other, aligned vertically. This is in contrast to default GUI element placement, which typically stacks elements horizontally unless explicitly controlled.

To use GUILayoutBeginVertical, you typically enclose the GUI elements you want to arrange vertically between a call to GUILayoutBeginVertical() and a corresponding GUILayoutEndVertical(). The layout system then automatically calculates the positions and sizes of the enclosed elements, arranging them from top to bottom. This is particularly useful for creating lists, toolbars, or any interface where a clear vertical flow of information or controls is desired. The system handles the spacing and resizing of elements automatically, simplifying the process of creating responsive layouts. Developers can also influence the vertical layout using optional parameters with GUILayoutBeginVertical, such as `GUILayoutOption` directives to control element spacing, alignment, or minimum/maximum sizes.