Line wrap in control Edit

[steph10]

Hello,

I am quite new to autoIt and have problems with control Edit: it seems like lines are wrapped automatically to 1024 characters, and I couldn't find how to increase this limit.

My goal is to display very long lines (up to 5,000 chars) without wrapping them on the screen, i.e. only with Hscrollbar to view the end of line.

Here is a sample code that features the problem:

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
    Local $Form, $Text, $string, $i

    $Form = GUICreate("Pb", 632, 592, 189, 112)
    $Text = GUICtrlCreateEdit("", 8, 32, 617, 145, $GUI_SS_DEFAULT_EDIT)
    $string = "Just a test....."
    For $i = 1 to 8
        $string = $string & $string
    Next
    ; $string is now a string made of 4096 characters
    GUICtrlSetData(-1, $string)
    GUISetState(@SW_SHOW)

    While 1
        Switch GUIGetMsg()

            Case $GUI_EVENT_CLOSE
                ExitLoop

        EndSwitch
    WEnd
EndFunc

Thanks a lot for your pointers!

Steph.

[Melba23]

steph10,

Welcome to the AutoIt forum.

A Google search found this on a MS help page:

In the Microsoft Windows graphical environment [...] A multiline edit control is [...] subject to the following limitations:

[...]

The maximum number of characters in a single line is 1024.

The maximum width of a line is 30,000 pixels.

The maximum number of lines is approximately 16,350.

Looks like it is a Windows limitation, not an AutoIt one, which means you are stuck with it.

However, I have found some evidence that RichEdit controls are not limited in the same manner - perhaps you might like to look at the GUIRichEdit UDF to see if that can help you.

M23

[steph10]

Thank you for your reply, I feel dummy not to have check the Windows limitation...

I will try to use RichEdit, thank you for the tip!

Regards,

Steph.

[steph10]

Hello,

I confirm that RichEdit does the job!

Just a last question: why are there UDF's? I mean why are these extra controls not just integrated as others (combo, button, ...)?

Regards,

Stéphane.

[Melba23]

steph10,

The "built-in" controls are all contained within the AutoIt interpreter which is attached to any compiled script. This means that the more "built-in" functions you have, the bigger the compiled files. At present a compiled file is usually about 600k (or about 350k if you compress it with upx) - no-one really wants it to get too much bigger. By using UDFs, we can greatly expand the scope of AutoIt without adding to the size of the interpreter - and the compiled file size.

Another good reason to have UDFs is that it allows people other than the Devs to help improve AutoIt. Anyone can propose UDFs to enable AutoIt to do additional things which may be useful to other coders. These UDFs are available in the Examples section - or you can find them in the sigs of various members (you can see mine below). Some of these UDFs have been included in the main package - although their number is limited in order to keep the installation download to reasonable size and to reduce the burden of keeping the UDFs up to date - much easier to get the original authors to do the work for you.

I hope that explains clearly enough why we have UDFs. I look forward to seeing some of your code in the Examples section some day soon.

M23