GridLayout was inspired by the GridBagLayout manager. It is equally flexible but more intuitive for my taste and it also requires less boilerplate code.
Each cell is a uicontainer and can hold only one child. Unlike GridBagLayout, children are added at creation time by passing the cell container handle as their parent. No 'Add' methods are needed, which reduces the amount of code.
Cell sizes can be specified in pixels or as relative values. Merging and removing cells are supported, as well as various alignment options: stretch, center, left, right, top, bottom.
The archive also includes demos illustrating the GridLayout capabilities . Bug reports and suggestion for improvement are very much appreciated. Download, unpack, and enjoy!