jart
14th November 2002 12:17 UTC

limitations of the new page system
The new page system in CVS looks good, but with the removal of .onNextPage and .onPrevPage, there seems to be no way to cancel moving to the next/prev page.
Here is how I use this functionality:
Between the directory page and the install page I check if the program is already installed and running (by trying to open the executable in append mode). If it's running, I tell the user to close it or select a different install location. Then I call Abort to stay on the directory selection page.

Is there really no way to do it with the new page system?

kichik
14th November 2002 13:05 UTC

Sure there is:

Use Abort (see Section 4.8.1) from a built-in page pre-function to skip the page.

jart
14th November 2002 13:12 UTC

That's not what I want. I don't want to skip the page, I want to cancel moving to the next page.

kichik
14th November 2002 13:16 UTC

Oh, well, you can use .onVerifyInstDir for this but poping up message boxes won't be such a good idea since it is called everytime the user changes the selected directory.

I will think about adding a post function to the pages.

jbm
13th December 2002 19:07 UTC

Please add my vote for a post-page callback so I can do something when I'm leaving the page, and Abort when I don't want to leave the page.

kichik
13th December 2002 19:37 UTC

What's your reason jbm? Why do you need it?

jbm
13th December 2002 20:52 UTC

Same reason as I've seen posted elsewhere in this forum: I'm doing a prompt on the installdir if it doesn't exist I ask if they want to create it, and a Cancel on that dialog leaves the user on the same page so they can change it.

I understand about being able to add pages with InstallOptions and the use of .onVerify, but in this case my boss would rather see it behave "like other installers" and so I've implemented that.

Otherwise I'd be on 2.0 right now, as I'm itching to get MUI up. It's the only remaining concern for me. Maybe it should be a standard feature, as I see someone else is doing that too.

kichik
13th December 2002 20:59 UTC

There is a pretty good possiblity it will be added to b1.