What does wx mean in the word wxWidgets?

wxWidgets, wxWindows, wx.NET... I am just curious about what do these letters "wx" mean. Could you help me, please? Is it an abbreviation or what?

I tried to google it, but it did not help me.

Solution

From the history page on the wxWidgets web site:

wxWidgets (w for Windows, x for X) started off with support for XView and MFC 1.0

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