Category: Delphi

Delphi – E2032 For loop control variable must have ordinal type

A for loop’s control variable in delphi must be of the types Boolean, Char, WideChar, Integer, Enumerated, or Subrange. The for loop control variable in the example is of type Real, which is not allowed. How to fix it? Use the Integer ordinal type instead. If you utilise an Int64 or Variant control variable in a FOR loop, you can get this error. This is…

Delphi – E2021 Class type required

A class type is required in some cases by the compiler: As a class type’s ancestorIn a try-except statement, in the on-clause.A raise statement’s first argument.In a forward specified class type, as the final type. A Class Declaration must include a Class Type.If you try to declare a class with no parent class that implements one or more interfaces, you’ll get this error. Consider the…

Delphi – E2045 Bad object file format – ‘%s’

If an object file loaded with a $L or $LINK directive is not in the correct format in your delphi program, this error occurs. There are a few requirements that must be met: Check the help file for naming restrictions on segment names. There should be no more than ten portions. There should be no more than 255 external symbols. In LNAMES data, there are…

Delphi – E2007 Constant or type identifier expected

When the compiler expects a type, but instead finds a symbol that is neither a constant (a constant might start a subrange type) nor a type identifier, this error message appears. ExceptionClass is a variable, not a type, in this case. Make certain that you specify a type. Perhaps the identifier is misspelt or obscured by another identifier, such as one from another unit.

Delphi – E2053 Syntax error in real number

When the delphi compiler encounters the beginning of a scale factor (an ‘E’ or ‘e’ character) in a number, but no digits follow it, this error notice appears. We placed a space after ‘3.0E’ in the example; the number now terminates here for the compiler, and it is incomplete. We could have just erased the blank, but we prefer the look of a ‘+’ symbol.

Delphi – E2025 Procedure cannot have a result type

In your Delphi program, You’ve declared a procedure but haven’t specified a result type for it. Either you meant to declare a function or the result type should be removed. DotProduct was actually intended to be a function, but we used the wrong term. When declaring a function, be sure to specify a result type; when declaring a procedure, make sure to indicate no result…

Delphi – E2024 Invalid function result type

The use of file types as function result types is not permitted in Delphi. A file cannot be returned from a function. The file can be ‘returned’ as a variable parameter. You can allocate a file dynamically and return a pointer to it as an alternative.

Delphi – E2020 Object or class type required

When the syntax ‘Typename.Methodname’ is used, but the typename does not belong to an object or class type, this error message is displayed. TInteger has a Create method that Type Integer does not. Make that the identification refers to an object or class type; it could be misspelt or obscured by another unit’s identity.