Lazarus string Insert error

[JD]

Hi there everyone,

I keep getting the error "Wrong number of parameters" on this line of code

Insert('<< Name >>' , strFieldIsEmptyError, 10);

where strFieldISEmptyError := 'The field cannot be empty';

I did some snooping & I found that the compiler looks in db.pas for the definition on the string insert command assuming that I want to insert a record into a table.

I changed the line to

Code: [Select]

System.Insert('<< Name >>' , strFieldIsEmptyError, 10);and then to

Code: [Select]

UTF8Insert('<< Name >>' , strFieldIsEmptyError, 10);and both times I got an error saying "Variable identifier expected".

The code works in Delphi so I'd like to know the Lazarus equivalent for the Delphi string Insert procedure.

Thanks a lot

[Leledumbo]

Here's the documentation of System's Insert. What is the type of strFieldISEmptyError? If it's a constant or property, then definitely a compile error would come.

[JD]

Here's the documentation of System's Insert. What is the type of strFieldISEmptyError? If it's a constant or property, then definitely a compile error would come.

strFieldISEmptyError is a resourcestring. That may be the problem. I'll try the code with an ordinary string variable.

[Leledumbo]

strFieldISEmptyError is a resourcestring. That may be the problem.

Aha, so that's it. A resourcestring is actually a constant instead of a variable. Since Insert modifies its parameter, you can't use pass resourcestring to it.

[JD]

strFieldISEmptyError is a resourcestring. That may be the problem.

Aha, so that's it. A resourcestring is actually a constant instead of a variable. Since Insert modifies its parameter, you can't use pass resourcestring to it.

I changed the code to

Code: [Select]

      strErrorString := strFieldIsEmptyError;
      UTF8Insert('<< First Name >>', strErrorString, 10);
      MessageError(Self, strDataEntryError, strErrorString);

Thanks for the tip.