C++ & Qt

22 Dec 2024 07:21

I need functionality of

nx.algorithms.has_path(g, node_addr1, node_addr2)

C++ & Qt

21 Dec 2024 18:15

Another question what is the minimal condition for covariance? isnt it enough that class B inherits class A?

C++ & Qt

21 Dec 2024 16:21

Perhaps you have to add some include directories? Perhaps the header file you included tries to include other files?

C++ & Qt

21 Dec 2024 16:13

A good strategy is to focus on the first error. Solving that often makes the rest go away too.

C++ & Qt

21 Dec 2024 16:08

Last few hours when I was getting error it was 100% clear what happened, now its just a pile of a mess

C++ & Qt

21 Dec 2024 16:07

I meant a single .h file that I include into another .h causes the build error

C++ & Qt

21 Dec 2024 16:00

Hellow everyone, can smbd give me a clue why when I include *.h im getting many build errors? Or the question is a bit silly cuz highly depends on the implementation?

C++ & Qt

20 Dec 2024 18:29

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

20 Dec 2024 18:28

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

20 Dec 2024 18:28

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

18 Dec 2024 18:45

Did you try to add NO_CACHEGEN to the qt6_add_qml_module?

C++ & Qt

18 Dec 2024 18:43

This is the debugger setting in the run section.
You might also want to check the build section too, to ensure that the debugger is enabled there as well.

C++ & Qt

18 Dec 2024 18:38

Hi, one fun thing about QML Live preview with QQuickWidget. For some reason Qml live preview handler keep closing QMainWindow. So I added workaround, every time visibilty changes to hidden I call show()

C++ & Qt

18 Dec 2024 13:26

The Widget and QML are quite different here, and also the forum specifically mentions the QML Debugger.
Since it has a short instruction, I think it’s definitely worth giving it a try!
If it doesn’t work, you might want to try using mingw instead of MSVC and see if that helps.
Good luck :)

C++ & Qt

18 Dec 2024 12:53

Okay, sorry, I think I misread your first question.
The QMLLS warnings, which I believe should all be gone now, do not have anything to do with the debugger.
However, I think you should check the following links:
https://forum.qt.io/topic/10528/could-not-connect-to-the-in-process-qml-debugger/2
https://doc.qt.io/qtcreator/creator-debugging-qml.html

And since you are using the MSVC++ compiler, you may also want to check your kits and ensure that the MSVC debugger is set up correctly.

C++ & Qt

22 Dec 2024 07:20

Please. help me use bgl library. boost_1_86_0

C++ & Qt

21 Dec 2024 18:13

I found that for some reason I didnt need to include it to the .h, but had to include to the .cpp

C++ & Qt

21 Dec 2024 16:14

It references to the line which is just fine (the code was already written before and I didnt touch it)

C++ & Qt

21 Dec 2024 16:09

Bunch of errors (unfortunatelly in my native language so I doubt its usefull for u to understand :) )

C++ & Qt

21 Dec 2024 16:07

It should say exactly what the error is

C++ & Qt

21 Dec 2024 16:06

Do you mean literally ”include *.h” (which isn’t allowed) or that all h files breaks your code?

C++ & Qt

20 Dec 2024 18:29

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

20 Dec 2024 18:29

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

20 Dec 2024 18:28

from PySide6.QtWidgets import QApplication, QListView
from PySide6.QtCore import QAbstractListModel, QModelIndex, Qt
import sys
import typing


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index: QModelIndex, role: int = Qt.DisplayRole) -> typing.Any:
        if not index.isValid():
            return None

        if role == Qt.DisplayRole:
            return self._data[index.row()]["name"]

        if role == Qt.CheckStateRole:
            return Qt.Checked if self._data[index.row()]["checked"] else Qt.Unchecked

    def setData(
        self, index: QModelIndex, value: typing.Any, role: int = Qt.CheckStateRole
    ) -> bool:
        if role != Qt.CheckStateRole:
            return False
        if not index.isValid() or index.column() > 0:
            return False

        # Update the checked state
        self._data[index.row()]["checked"] = True if value == Qt.Checked else False
        state = "checked" if value == Qt.Checked else "unchecked me"
        print(f"Item '{self._data[index.row()]['name']}' is now {state}")

        # Notify the view of the change
        self.dataChanged.emit(index, index, [Qt.CheckStateRole])
        return True

    def flags(self, index: QModelIndex) -> Qt.ItemFlags:
        if not index.isValid():
            return Qt.NoItemFlags
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsUserCheckable

    def checked_items(self):
        return [it["name"] for it in self._data if it["checked"]]


if __name__ == "__main__":
    app = QApplication(sys.argv)

    view = QListView()
    model = ChoiceModel(
        [{"name": "Item 1", "checked": True}, {"name": "Item 2", "checked": False}]
    )
    view.setModel(model)

    view.show()

    app.exec()

C++ & Qt

18 Dec 2024 18:45

When I turn off the debugger or when I switch it to automatic, the error disappears, but I need a QML debugger 😢
C++ debugger works as expected

C++ & Qt

18 Dec 2024 18:43

I am not sure I understand what shall I put in qt6_add_qml_module OUTPUT_DIRECTORY

C++ & Qt

18 Dec 2024 18:41

One more issue is with live reload. I need help. I have qt6_add_qml_module() and live preview works only for changes in the Main.qml file but not the ones which are included. After some debugging I see that QmlEngine loads those files with qrc:/ url, and the IDE or QQmlPreviewFileEngine does not know the mapping between local fs and the qrc so they do not intercept it. Do you also have same issue? Or is it something wrong with my cmake or directory structure?

C++ & Qt

18 Dec 2024 15:40

The problem is that these instructions include items that are not available in the current version of QtCreator. Before asking the question here, I spent a significant amount of time looking for a solution to the problem myself (I saw these instructions before)
Switching from MSVC to MinGW also doesn't change anything (((

C++ & Qt

18 Dec 2024 13:12

The forum post is dated 2011, so I think it's slightly out of date :-)
The problem is definitely not in the C++ debugger, because there are no problems with Qt Widgets applications, as with C++ applications in general. Only the connection to the QML debugger is missing for some unknown reason. On my second laptop, on which I haven't installed new programs for a long time, but installed Windows updates, the problems persist. Therefore, the option of occupying the port is excluded as well.
Using different versions of Qt also has no effect.

C++ & Qt

18 Dec 2024 12:17

Did I do something wrong?