On 2016-11-16 23:02:47 Leslie Turriff wrote: > Hi, > ��������I'm trying to learn to write a GUI app using the book "C++ GUI > Programming � with Qt 3", which of course is not written with Trinity in > mind, but hopefully will be enough to get me started. > : Looking in /usr/include, I see two subdirectories related to Trinity, tqt/ and tqt3/. The first appears to be ~90% c headers, while the second seems to be mostly c++ headers. How does one know which are appropriate for a piece of code? I also notice that while Tutorial1 seems to work okay with tqapplication.h and tqpushbutton.h, there also exist ntqapplication.h and ntqpushbutton.h. Again, how does one know which to use? Leslie