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--- programming:qt [2021/06/11 02:46]
nanodano created
+++ programming:qt [2021/06/11 05:52] (current)
nanodano
@@ Line 1: / Line 1: @@
 ====== Qt ======
-Get Qt from [[]]
+Get Qt from [[https://www.qt.io/download]]. The main programs you are interested in are the QtCreator which is the IDE and the Designer which is the UI builder (usually integrated right into QtCreator already though).
+For Qt in Python, see [[https://www.devdungeon.com/content/python3-qt5-pyqt5-tutorial|PyQt5 Tutorial]]
+===== Installation =====
+In Debian, install Qt5 libraries, QtCreator IDE and UI Designer with ''apt install qt5-default qtcreator''. Run  the IDE with ''qtcreator''. Run the GUI Designer with ''designer''.
+===== qDebug verbosity levels =====
+Qt has multiple levels of verbosity for logging. If you are able to print ''qInfo()'' messages but ''qDebug()'' is not outputting anything, you need to turn on the debug messages.
+<code c++ qdebug_example.cpp>
+#include <QDebug>
+// ...
+qInfo() << "Is this working?";
+qDebug() << "but not this?";
+</code>
+You can set the Qt logging levels in ''~/.config/QtProject/qtlogging.ini'' like this:
+<code text qtlogging.ini>
+# ~/.config/QtProject/qtlogging.ini
+[Rules]
+*.debug=true  # Enable all debug messages
+qt.*.debug=false  # Disable qt debug messages, leaving only ours
+</code>
 ===== Using WinPcap with Qt =====
@@ Line 11: / Line 38: @@
 // to the project file in Windows
 //
-//# Pcap specific build stuff for Windows
+//# Pcap specific build stuff for Windows (in qmake)
 //INCLUDEPATH += C:/WpdPack/Include
 //LIBS += C:/WpdPack/Lib/wpcap.lib

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