Delphi Compiler Error
W1074 Unknown Custom Attribute
Reason for the Error & Solution
This message indicates that the class used for this attribute was not found.
Note: When this warning is set to
False, the Unsupported language warning is generated.Example
type
[ThisIsAFakeAttribute('Hello', 10)] // This generates 'the "Warning: W1074 Unknown custom attribute"
TTestClass = class
end;
{$WARN UNKNOWN_CUSTOM_ATTRIBUTE OFF} // Here we disable the generation of W1074
[ThisIsAFakeAttribute('Hello', 10)] // Now, this generates the "Warning: W1025 Unsupported language feature: 'custom attribute'"
TTestClass2 = class
end;
