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8171b76ddd
This method restores the Qt 5 logic for testing for null variants, where for core Qt types the isNull check is forwarded to the actual data type. E.g. on Qt 5: QVariant( QDateTime()).isNull() is true, but on Qt 6 it's false This breaks a LOT of assumptions made throughout QGIS. The new helper method avoids this breakage by ensuring we follow the Qt 5 logic also on Qt 6 builds, and also gives us the option to extend this logic for user types (e.g QVariant( QgsGeometry() ).isNull() could return true). (That's not included here)
51 lines
1.8 KiB
Plaintext
51 lines
1.8 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvariantutils.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsVariantUtils
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{
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%Docstring(signature="appended")
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Contains utility functions for working with QVariants and QVariant types.
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.. versionadded:: 3.24
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%End
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%TypeHeaderCode
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#include "qgsvariantutils.h"
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%End
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public:
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static QString typeToDisplayString( QVariant::Type type, QVariant::Type subType = QVariant::Type::Invalid );
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%Docstring
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Returns a user-friendly translated string representing a QVariant ``type``.
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The optional ``subType`` can be used to specify the type of variant list or map values.
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%End
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static bool isNull( const QVariant &variant );
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%Docstring
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Returns ``True`` if the specified ``variant`` should be considered a NULL value.
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This method is more rigorous vs QVariant.isNull(), which will return
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``False`` on newer Qt versions for tests like `QVariant( QDateTime() ).isNull()`.
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.. versionadded:: 3.28
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvariantutils.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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