There are no custom widgets in my "Qt Designer with QGIS 3.0.3 custom widgets". Is it a bug or I should somehow manually enable them?
The environment and path needs to be set for Qt Designer to access the QGIS Custom widgets. These can be set by running the "qgis-designer.bat" file that comes with a QGIS installation. For a network installation, this file is located in: ...\OSGEO4W64\bin\qgis-designer.bat
The contents of this batch file are:
start "Qt Designer with QGIS custom widgets" /B designer.exe %*
In QGIS 3.2.0, custom widgets seem to be available:
Tested on Windows 7 64-bit.
I used the QGIS Standalone Installer Version 3.2 (64 bit) and following the simple on-screen instructions. Once installed, I simply ran
Qt Designer with QGIS 3.2.0 custom widgets.exewhich was found in the Start menu.
I also tested QGIS Standalone Installer Version 3.2 (32 bit) on a 32-bit computer and the custom widgets were also available.