Re: Which class should handle the request to open a file
On Sat, 12 Jul 2008 01:14:45 +0200, WP <invalid@invalid.invalid> wrote:
Hi!
I'm writing a simple game (sdi, doc-view) and new games are started by
opening files from a menu item (more on what the actual game is about
below). However, I find it difficult to figure out what I should handle
where. I was thinking of handling open file request (ON_COMMAND()) in
the main frame and if the user selects a valid file then notify the
document class about it (let the document class do the actual reading of
the file).
The files contain a text-represation of a maze and the user is supposed
to control a character that must find its way out of the maze. The
faster and the fewer clicks to do so the higher the score.
I'm using MSVC++ 2008.
This is handled by the document/view architecture in
CDocument::OnOpenDocument. You shouldn't need to do anything but implement
that function. If you are doing something outside the framework, you can
handle the command message anywhere in the routing chain, which IIRC, is
view->frame->document->application by default. But yeah, the document class
is definitely the place to read the contents of a file into the document.
The UI activity (file selector dialog) should be handled by the view or
frame, probably the frame.
--
Doug Harrison
Visual C++ MVP
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