Usage of QGenericArgument / Q_ARG when using invokeMethod in PySide2










1















I'm trying to port a code from PyQt5 to PySide2. At a certain point, I'm using:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument.Q_ARG(str, filepath))


Nevertheless, Q_ARG is not into QGenericArgument in PySide2. In fact, I have not been able to locate it at all, despite it is described in the documentation as the macro to be used instead of QGenericArgument.



Plan B: I tried using QGenericArgument directly, even while documentation discourages to do it. Therefore I tried these:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument(str, filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('str', filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('QString', filepath))


In all of the cases, the error has been the same:



ERROR: 'PySide2.QtCore.QGenericArgument' called with wrong argument types:
PySide2.QtCore.QGenericArgument(str, str)
Supported signatures:
PySide2.QtCore.QGenericArgument(PySide2.QtCore.QGenericArgument)
PySide2.QtCore.QGenericArgument(bytes = nullptr, void = nullptr)


So it seems that I must use pointers here, but don't know how to do that. Also, I have not found any example of invokeMethod for PySide2.



Any idea?










share|improve this question
























  • Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

    – eyllanesc
    Nov 14 '18 at 11:43











  • unfortunately PySide2 inherits the same limitations of PySide

    – eyllanesc
    Nov 14 '18 at 11:43











  • So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

    – Roman Rdgz
    Nov 14 '18 at 15:26











  • As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

    – eyllanesc
    Nov 14 '18 at 15:35















1















I'm trying to port a code from PyQt5 to PySide2. At a certain point, I'm using:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument.Q_ARG(str, filepath))


Nevertheless, Q_ARG is not into QGenericArgument in PySide2. In fact, I have not been able to locate it at all, despite it is described in the documentation as the macro to be used instead of QGenericArgument.



Plan B: I tried using QGenericArgument directly, even while documentation discourages to do it. Therefore I tried these:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument(str, filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('str', filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('QString', filepath))


In all of the cases, the error has been the same:



ERROR: 'PySide2.QtCore.QGenericArgument' called with wrong argument types:
PySide2.QtCore.QGenericArgument(str, str)
Supported signatures:
PySide2.QtCore.QGenericArgument(PySide2.QtCore.QGenericArgument)
PySide2.QtCore.QGenericArgument(bytes = nullptr, void = nullptr)


So it seems that I must use pointers here, but don't know how to do that. Also, I have not found any example of invokeMethod for PySide2.



Any idea?










share|improve this question
























  • Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

    – eyllanesc
    Nov 14 '18 at 11:43











  • unfortunately PySide2 inherits the same limitations of PySide

    – eyllanesc
    Nov 14 '18 at 11:43











  • So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

    – Roman Rdgz
    Nov 14 '18 at 15:26











  • As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

    – eyllanesc
    Nov 14 '18 at 15:35













1












1








1








I'm trying to port a code from PyQt5 to PySide2. At a certain point, I'm using:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument.Q_ARG(str, filepath))


Nevertheless, Q_ARG is not into QGenericArgument in PySide2. In fact, I have not been able to locate it at all, despite it is described in the documentation as the macro to be used instead of QGenericArgument.



Plan B: I tried using QGenericArgument directly, even while documentation discourages to do it. Therefore I tried these:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument(str, filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('str', filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('QString', filepath))


In all of the cases, the error has been the same:



ERROR: 'PySide2.QtCore.QGenericArgument' called with wrong argument types:
PySide2.QtCore.QGenericArgument(str, str)
Supported signatures:
PySide2.QtCore.QGenericArgument(PySide2.QtCore.QGenericArgument)
PySide2.QtCore.QGenericArgument(bytes = nullptr, void = nullptr)


So it seems that I must use pointers here, but don't know how to do that. Also, I have not found any example of invokeMethod for PySide2.



Any idea?










share|improve this question
















I'm trying to port a code from PyQt5 to PySide2. At a certain point, I'm using:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument.Q_ARG(str, filepath))


Nevertheless, Q_ARG is not into QGenericArgument in PySide2. In fact, I have not been able to locate it at all, despite it is described in the documentation as the macro to be used instead of QGenericArgument.



Plan B: I tried using QGenericArgument directly, even while documentation discourages to do it. Therefore I tried these:



QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument(str, filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('str', filepath))

QMetaObject.invokeMethod(dialog, "my_function", Qt.QueuedConnection, QGenericArgument('QString', filepath))


In all of the cases, the error has been the same:



ERROR: 'PySide2.QtCore.QGenericArgument' called with wrong argument types:
PySide2.QtCore.QGenericArgument(str, str)
Supported signatures:
PySide2.QtCore.QGenericArgument(PySide2.QtCore.QGenericArgument)
PySide2.QtCore.QGenericArgument(bytes = nullptr, void = nullptr)


So it seems that I must use pointers here, but don't know how to do that. Also, I have not found any example of invokeMethod for PySide2.



Any idea?







python pyside2






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 14 '18 at 11:42









eyllanesc

77.5k103156




77.5k103156










asked Nov 14 '18 at 8:55









Roman RdgzRoman Rdgz

5,3372988166




5,3372988166












  • Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

    – eyllanesc
    Nov 14 '18 at 11:43











  • unfortunately PySide2 inherits the same limitations of PySide

    – eyllanesc
    Nov 14 '18 at 11:43











  • So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

    – Roman Rdgz
    Nov 14 '18 at 15:26











  • As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

    – eyllanesc
    Nov 14 '18 at 15:35

















  • Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

    – eyllanesc
    Nov 14 '18 at 11:43











  • unfortunately PySide2 inherits the same limitations of PySide

    – eyllanesc
    Nov 14 '18 at 11:43











  • So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

    – Roman Rdgz
    Nov 14 '18 at 15:26











  • As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

    – eyllanesc
    Nov 14 '18 at 15:35
















Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

– eyllanesc
Nov 14 '18 at 11:43





Possible duplicate of QMetaObject::invokeMethod doesn't find methods with parameters

– eyllanesc
Nov 14 '18 at 11:43













unfortunately PySide2 inherits the same limitations of PySide

– eyllanesc
Nov 14 '18 at 11:43





unfortunately PySide2 inherits the same limitations of PySide

– eyllanesc
Nov 14 '18 at 11:43













So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

– Roman Rdgz
Nov 14 '18 at 15:26





So, no news in last years for this issue? In that question the OP is using 'QString' in GenericArgument, and str in the slot (just as I already tried with no success). Any workaround?

– Roman Rdgz
Nov 14 '18 at 15:26













As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

– eyllanesc
Nov 14 '18 at 15:35





As they point out in the answer that is a bug, it does not matter if it is QString or str, which still remains in PySide2 and unfortunately there is no workaround

– eyllanesc
Nov 14 '18 at 15:35












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