AbsoluteSize (Property)
From Legacy Roblox Wiki
 AbsoluteSize
| |
| Type | Vector2 |
| Description | Size of the render window in pixels. |
| Member of | GuiBase |
Limitations
- Takes 1.3 seconds to initiate on join, and a third of a second after respawning.
- Only LocalScripts see the true absolute size. For normal scripts, the AbsoluteSize is Vector2.new(0, 0).
- The AbsoluteSize property is often greater than it's AbsolutePosition counterpart by less then a decimal, even though their UDim2 position and sizes may be the same. For example, if you have a GUI with a position of UDim2.new(0, 10, 0, 10) and a size of UDim2.new(0, 10, 0, 10), the AbsolutePosition will be 7, while the AbsoluteSize will be about 7.8619175. A good way to compare them properly is to perform the math.floor() function on the AbsoluteSize.
