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[wxperl-users] Re: What people find confusing in wxWindows docs
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From: Michael N. <MN...@Ja...> - 2002-04-24 20:41:14
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----- Original Message ----- From: "Michael Nino" <MN...@Ja...> To: <wxp...@li...> Sent: Tuesday, April 23, 2002 8:14 AM Subject: Re: wxperl-users digest, Vol 1 #147 - 4 msgs > Hi, > > I am not a C/C++ programmer but a Perl programmer. Nothing against C/C++ of > course I wish I had the time to learn it. I've read part of "GNU C++ for > Linux" so I understand basically C/C++ syntax, prototypes, data structures, > etc... however IMHO at least one example is sorely needed for each class > *or* at least 80% of them. The reason being is that as a Perl programmer > trying to make the leap to GUI programming (vs. CGI/HTML) I need to get > started quickly! > > I believe the examples that are included in wxPerl are not through enough. > What I mean to say is that in addition to seeing the wxPerl an explanation > of GUI programming in Perl terms would go along way to getting Perl > programmers started quickly. > > I'm under contract really wanted (and still do!) to write a GUI application > that would run locally on the customers computer-- a content management > system for their web site but I couldn't make the leap quickly enough so I > am writing it in DHTML and Win32::OLE instead. : ( > > Mattia, if you wouldn't mind answering a lot of questions so I could pick > your brain. I would definitely consider creating these numerous examples and > associated explanations. I love Perl and would enjoying championing the Wx > library. > > Michael > > ----- Original Message ----- > From: <wxp...@li...> > To: <wxp...@li...> > Sent: Monday, April 22, 2002 7:15 PM > Subject: wxperl-users digest, Vol 1 #147 - 4 msgs > > > > Send wxperl-users mailing list submissions to > > wxp...@li... > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://lists.sourceforge.net/lists/listinfo/wxperl-users > > or, via email, send a message with subject or body 'help' to > > wxp...@li... > > > > You can reach the person managing the list at > > wxp...@li... > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of wxperl-users digest..." > > > > > > Today's Topics: > > > > 1. RFI: What people find confusing in wxWindows docs? (Mattia Barbon) > > 2. Re: Associating data with listctrl items (Mattia Barbon) > > 3. Re: Associating data with listctrl items (Nick Johnston) > > 4. default window colour (Dave Roe) > > > > --__--__-- > > > > Message: 1 > > From: "Mattia Barbon" <mb...@ds...> > > To: wxp...@li... > > Date: Sun, 21 Apr 2002 22:47:05 +0200 > > Reply-to: mb...@ds... > > Subject: [wxperl-users] RFI: What people find confusing in wxWindows docs? > > > > Given that Perl programmers find wxWindows documentation > > ( written for C++ ) confusing, I'd like to know what exactly > > people think is confusing. Knowing that I may think some way > > of improving the documentation ( no promises, though ). > > > > Thanks > > Mattia > > > > > > > > --__--__-- > > > > Message: 2 > > From: "Mattia Barbon" <mb...@ds...> > > To: Nick Johnston <sk...@er...> > > Date: Sun, 21 Apr 2002 22:47:05 +0200 > > Subject: Re: [wxperl-users] Associating data with listctrl items > > Reply-to: mb...@ds... > > CC: wxp...@li... > > > > You forgot platform & wxPerl version, so I won't give you the solution ;-p > > > > > I have got a wxPerl application that contains a Wx::TreeCtrl and a > > > Wx::ListCtrl. Whenever a Wx::TreeCtrl item is activated, new items > > > are inserted in the list control. The "items" are stored as > > > data in the tree control. > > > > > > I am attempting to supply a hashref as data for each item in the > > > list control. So, in my EVT_TREE_SEL_CHANGED callback function > > > I have the following code: > > > > <snip> > > > > > Adding the actual *items* works fine (they display properly in the > list). > > > The only problem is that setting the item data simply *does not work*. > > > Bizarrely, whenever I print out $id in the above function, it is > > > *always* zero. > > > > > > Anyway in my EVT_LIST_ITEM_ACTIVATED callback function I have: > > > > > > my $file_details = $object->{list}->GetItemData($event->GetItem()); > > > > > > but this causes a message box to appear saying: > > > > > > "Cannot retrieve information for list control item XXXXXXXX" (i.e. it > > > includes the item number). > > I see; this: the problem is that GetItemData takes the index of the item > > $list->GetItemData( $ebent->GetIndex() ), or $event->GetData() works fine > > > > > I think the problem is that there is no SetPlData etc. for listctrl like > > > there is for treectrl. The C++ documentation seems to show that > > > a listctrl item can only have a 'long' associated with it. > > Yes, you can use the long as an index in an array ( or in an hash ) > containing > > the hashrefs, though. > > > > > How can I associate a hashref with each item in a listctrl and how I > > > can access this hashref when the item is "activated"? > > See above > > > > HTH > > Mattia > > > > > > > > --__--__-- > > > > Message: 3 > > Date: Mon, 22 Apr 2002 05:53:01 -0700 (PDT) > > From: Nick Johnston <sk...@er...> > > To: Mattia Barbon <mb...@ds...> > > cc: <wxp...@li...> > > Subject: Re: [wxperl-users] Associating data with listctrl items > > > > On Sun, 21 Apr 2002, Mattia Barbon wrote: > > > > > You forgot platform & wxPerl version, so I won't give you the solution > ;-p > > > > > > > Win32, ActivePerl 5.6.1 build 628, wxPerl 0.09 -- sorry for not including > > before. > > > > > I see; this: the problem is that GetItemData takes the index of the item > > > $list->GetItemData( $ebent->GetIndex() ), or $event->GetData() works > fine > > > > > > Yes, you can use the long as an index in an array ( or in an hash ) > containing > > > the hashrefs, though. > > > > > > > Ok, so I should have a hash keyed on the long and then have the value for > > that key be a hashref? > > > > Could you provide some sample code, please? I would really appreciate it. > > I'm confused that the $id in my original code is always 0. I would really > > appreciate some sample code here. > > > > > > How can I associate a hashref with each item in a listctrl and how I > > > > can access this hashref when the item is "activated"? > > > See above > > > > > > > I would appreciate it if you could produce a simple snippet of code to > > illustrate this (inserting an item, storing its data in a global hash > > keyed on the long and then retrieving). > > > > I'm still pretty new to Wx and finding it pretty difficult. > > > > - Nick > > > > > > > > --__--__-- > > > > Message: 4 > > Date: Mon, 22 Apr 2002 11:17:28 -0700 > > From: Dave Roe <dav...@ma...> > > To: wxPerl Users <wxp...@li...> > > Subject: [wxperl-users] default window colour > > > > Win2K > > Perl 5.6.1 > > wxWindows 2.2.9 > > wxPerl 0.10 > > > > how do you determine the default window colour? the wxWindows docs point > > at wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) but > > wxSystemSettings does not seem to be supported by wxPerl (although > > wxSYS_COLOUR_WINDOW does have an entry in _Exp.pm) > > > > thanks, > > /dave > > > > > > > > > > --__--__-- > > > > _______________________________________________ > > wxperl-users mailing list > > wxp...@li... > > https://lists.sourceforge.net/lists/listinfo/wxperl-users > > > > > > End of wxperl-users Digest > > > |
