[Kde-perl] Why isn't this easy? implementing File->New

[Gary L. Greene Jr.]

Joe, try creating the UI under qt designer and then run the resultant UI 
through uic to generate the initial code for the interface. You'll find that 
it makes the interface design a WHOLE lot simpler.

On Tuesday 01 August 2006 19:00, Joe Carlson wrote:
> I am liking PerlQt. At last, some real widgets that enable access to our
> Perl infrastructure. I'm a convert.
>
> Nonetheless, a problem. I'd like to implement a "File->New" menu action
> to open a new instance of the main window. In the c++ version, this is
> trivial:
>
> void MyView::processFileMenu(int option)
> {
>   if (option == FILENEW) {
>     MyView *newWindow = new MyView();
>     newWindow->show();
>   }
> ...
>
> and that's it. the new window opens and I have an event loop responding
> to it.
>
> The corresponding perl version (inside MyView.pm which subclasses
> Qt::MainWindow):
>
> package MyView;
> ...
> use constant FILENEW=>1;
> ...
> sub processFileMenu
> {
>   my $option = shift;
>   if ($option == FILENEW) {
>     my $newWindow = main::MyView();
>     $newWindow->show;
>   }
> ...
>
> is not as successful. I can see from the perl debugger that I am calling
> MyView::NEW and I am creating a new instance of the main window. But
> nothing shows up on the screen. The X event loop continues to process
> events from the original main window.
>
> Am I correct in assuming that I need to invoke the constructor from the
> namespace main::? I have been unable to find any other legitimate way to
> call it. Are there any alternatives for creating new instances of these
> classes directly?
>
> I looked at some of the trace output from the debugger, and I am left
> with the impression that there may be some processing that happens only
> the first time a module is autoloaded that prevents new instances from
> getting processed by the metaObject-izer.
>
> Anyone have a suggestion? I haven't stumbled over the solution yet.
>
> Thanks,
>
> Joe
>
>
>
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