How to install QtDesigner?

Question

I just installed Qt 5.4.1 on Windows 7. And there is no QtDesigner. Also there is no QtDesigner in MaintenanceTool.
How can I install it?

Answer 1

Expanding StonyBoy answer. If you are on macOS, you have installed Qt5 with brew, and you want to access the Qt5 Designer app via command line (like on Linux), you can set a symlink to the actual executable as well, like this:

ln -sf /usr/local/Cellar/qt/5.13.1/libexec/Designer.app/Contents/MacOS/Designer /usr/local/opt/qt/bin/designer

This way, the designer command will be placed in the bin folder, together with the other Qt5 executables (as qmake). Thus, you will be able to launch it simply by typing designer in your shell.

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Note: of course you must have the path of the Qt5 bin/ folder added to your PATH environmental variable, for being able to directly call designer in the shell. But brew added it for you when you installed Qt5.