I've developed a hackish workaround - if you're frustrated by this issue too, this "fix" is ugly but might help in the short-term:
I noticed that Qt Creator still recognizes the old qmlRegisterType function calls if they're invoked from main in a project. So naturally, I made a custom compiler step for qmake that generates a header file with all QML_ELEMENT-tagged classes registered in a function.
First, make sure you've set up qmltypes in your project as usual - your QML_IMPORT_NAME and all that is set.
Add to the bottom of MyProject.pro:
type_registrar_unfucker.name = type_registrar_unfucker
type_registrar_unfucker.input = TYPE_REGISTRAR_SOURCES
type_registrar_unfucker.commands = python3 $$PWD/type_unfuck.py ${QMAKE_FILE_IN} ${QMAKE_FILE_OUT} $$QML_IMPORT_NAME $$QML_IMPORT_MAJOR_VERSION
type_registrar_unfucker.output = ${QMAKE_FILE_IN_BASE}.h
type_registrar_unfucker.clean = ${QMAKE_FILE_IN_BASE}.h
type_registrar_unfucker.variable_out = HEADERS
QMAKE_EXTRA_COMPILERS += type_registrar_unfucker
TYPE_REGISTRAR_SOURCES += $$OUT_PWD/myproject_metatypes.json
Add as type_unfuck.py in your source directory:
# type unfuck
# -----------
# This python script deals with the issue of Qt Creator not being able to recognize element types
# registered using 'QML_ELEMENT'.
#
# It does so by generating a header, 'myprojectname_metatypes.h'.
# Include this header ONLY in main.cpp, and then call `registerTypes()` first thing in `main`.
# Then, Qt Creator will stop whining.
import sys
import json
source_path = sys.argv[1]
dest_path = sys.argv[2]
import_name = sys.argv[3]
import_major = sys.argv[4]
with open(source_path) as f:
data = json.load(f)
includes = ["QtQml"]
types = []
for file in data:
includes.append(file["inputFile"])
for type in file["classes"]:
if "classInfos" in type and {"name":"QML.Element","value":"auto"} in type["classInfos"]:
types.append(type["className"])
with open(dest_path, 'w') as f:
for i in includes:
f.write(f'#include <{i}>\n')
f.write('void registerTypes() {\n')
for t in types:
f.write(f'\tqmlRegisterType<{t}>("{import_name}", {import_major}, 0, "{t}");\n')
f.write('}\n')
Then, just add #include <myproject_metatypes.h> to your project's main.cpp and invoke registerTypes(); immediately in your main function. Build your project, then click on Tools -> QML/JS -> Reset Code Model, and Qt Creator should now recognize your custom components correctly.
