https://cygwin.com/pipermail/cygwin/2015-April/221479.html
[ANNOUNCEMENT] Updated: qt3-3.3.8b-17, qt4-4.8.6-7
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https://cygwin.com/cygwin/packages/summary/adwaita-qt4.html
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https://lwn.net/Articles/436867/
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https://cygwin.com/pipermail/cygwin/2008-October/169985.html
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https://www.cnx-software.com/2012/12/03/2d3d-graphics-linux-demo-x11-egl-gles2-qt4-on-allwinner-a10-tablet/
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Cygwin Package Summary for gambas3-gb-qt4-ext
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https://www.abclinuxu.cz/poradna/programovani/show/224363
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https://cygwin.com/cygwin/packages/summary/gambas3-gb-qt4-opengl.html
Cygwin Package Summary for gambas3-gb-qt4-opengl
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https://www.codementor.io/qt4-experts
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