How do I include a newline character in a string in Delphi?

Question

I want to create a string that spans multiple lines to assign to a Label Caption property. How is this done in Delphi?

Answer 1

my_string := 'Hello,' + #13#10 + 'world!';

#13#10 is the CR/LF characters in decimal

Answer 2

here's an even shorter approach:

my_string := 'Hello,'#13#10' world!';

Answer 3

On the side, a trick that can be useful:
If you hold your multiple strings in a TStrings, you just have to use the Text property of the TStrings like in the following example.

Label1.Caption := Memo1.Lines.Text;

And you'll get your multi-line label...

Answer 4

Or you can use the ^M+^J shortcut also. All a matter of preference. the "CTRL-CHAR" codes are translated by the compiler.

MyString := 'Hello,' + ^M + ^J + 'world!';

You can take the + away between the ^M and ^J, but then you will get a warning by the compiler (but it will still compile fine).

Answer 5

I prefer to define "const LFCR = #13#10;" because I end up using that all over the place in my code. Then it's simple to writing it like this:

MyString := 'Hello,' + LFCR + 'world!';

Answer 6

In the System.pas (which automatically gets used) the following is defined:

const
  sLineBreak = {$IFDEF LINUX} AnsiChar(#10) {$ENDIF} 
               {$IFDEF MSWINDOWS} AnsiString(#13#10) {$ENDIF};

This is from Delphi 2009 (notice the use of AnsiChar and AnsiString). (Line wrap added by me.)

So if you want to make your TLabel wrap, make sure AutoSize is set to true, and then use the following code:

label1.Caption := 'Line one'+sLineBreak+'Line two';

Works in all versions of Delphi since sLineBreak was introduced, which I believe was Delphi 6.

Answer 7

Hi

I dont have a copy of Delphi to hand, but I'm fairly certain if you set the wordwrap property to true and the autosize property to false it should wrap any text you put it at the size you make the label. If you want to line break in a certain place then it might work if you set the above settings and paste froma text editor.

Hope this helps.

Answer 8

ShowMessage('Hello'+Chr(10)+'World');