Installation path control

sapha
4th October 2003 15:27 UTC

Installation path control
Hi, I'm a newbie here...
This is my problem:

I need an installer that can check if the length of the installation path entered by the user is <= of a defined number. Now, this is easy, but how can i permit to the user to repeat the path entry?
For now, i use a message box and then i quit the installer...

Thanks!

n0On3
4th October 2003 16:17 UTC

you can put the messagebox in a callback.

from docs:

4.5.3 Callbacks

[...] the leave-function is called right after the user has pressed the next button and before the page is left.

if that's not enough, post again ;)

Vytautas
4th October 2003 16:24 UTC

You can use the abort command in the leave function to avoid the user continuing to the next page.

Also you could use the .onVerifyInstDir function to check the path as the user is selecting it and if it is incorrect automatically disable the next button.

Vytautas

sapha
4th October 2003 16:28 UTC

i will try
Thanks, i will try that!
However, i thimk it will be hard cause i've used the MUI and i've not used Pages...

Bye

Vytautas
4th October 2003 16:37 UTC

You don't need to use MUI, although you can. I will post an example of the .onVerifyInstDir function from the docs. Hope it helps.

Function .onVerifyInstDir
    IfFileExists $INSTDIR\Winamp.exe PathGood
      Abort ; if $INSTDIR is not a winamp directory, don't let us install there
    PathGood:
  FunctionEnd

Vytautas

sapha
4th October 2003 16:45 UTC

I feel so little... :)

THANK YOU ALL

Will i need to back? :)

Vytautas
4th October 2003 16:51 UTC

If you use the .onVerifyInstDir function the user will not be able to click next if the path is of wrong length. (The function is called every time the path changes, so as they say in the docs "don't do anything silly in this function, e.g. don't use message boxes, etc.")

So no you will not have to click back.

Vytautas :)

sapha
5th October 2003 15:27 UTC

THANKS!!!
It worked! Thank you!

Bye

PS: sorry if my english :)

n0On3
5th October 2003 16:45 UTC

mmm... I learnt some things today ;)