Just like excel or vb does. A grid always looks like a normal grid, and can acts as a normal gird, where we can input some text. but when we click the right-most part, this grid becomes a choice widget, so we can choose some pre-defined gizmo; or it becomes a file-selector, and there is a button with "..." on it, the selected file name is filled; or it pops up a coluor/font choose dialog.
It seems that wxpython supports the choice only.
thank you
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