Re: [AD] drag and drop win32

[Robert Jr Ohannessian <rohannessian@xxxxxxxxxx>]

aj wrote:
> At 09:03 PM 11/11/2003 -0500, you wrote:
>
> > It would probably also be useful to support drag and drop of other 
> > things, such as bitmaps or text.
>
>
>
>
> it works by passing a filename.
> are you talking about clip-board stuff....
> thats something else.

Yes - you can drag and drop clipboard items; for example, a block of 
text from Word can be draged and dropped into another app.


> > aj wrote:
> >
> > > At 08:52 PM 10/11/2003 +0100, you wrote:
> > >
> > > > > > i spotted this in the CHANGES for 4.1.12
> > > > > >
> > > > > > Angelo Mottola let application bundles accept files dragged onto the
> > > > > > application icon under MacOS X.
> > > > >
> > > > >
> > > > >
> > > > > I'm not sure it means drag-and-drop for Allegro apps, but Angelo will
> > > > > certainly set us straight.
> > > >
> > > >
> > > >
> > > > This means one can drag and drop a file on top of an Allegro 
> > > > application icon, and the app will launch with the dragged item's 
> > > > filename as the only command line argument (argv[1]).
> > > > This was mainly added to make Alex the Allegator 4 to work properly 
> > > > here with custom maps; you drag a text file specifying the maps on 
> > > > top of the game exe, and the game loads the maps from that file. 
> > > > Under Win32 it works this way, so I assumed I could emulate the 
> > > > behaviour under OSX too...
> > >
> > >
> > > I think my proposal of a win32 drag and drop is reasonable.
> > > It is near impossible as an add-on.
> > > The interface from an allergro users point of view is just a single 
> > > callback that receives filenames... thats got to be the easiest 
> > > interface i can think of.
> > > The code that goes into allegro is small and easy to understand  and 
> > > does not slow down allegro for those that do not wish to use this 
> > > feature.
> > > Only thing i left out was some documenation, it would go into the 
> > > 'Windows specifics' section (allegro035.html)  here it is:
> > >
> > > extern void (*drag_and_drop_callback)(int x, int y, const char* 
> > > filename);
> > > Called by allegro when files are dragged and dropped onto the allegro 
> > > application. The callback is passed the mouse x and y positions and 
> > > the filename.  This function will be called once for each file and 
> > > should execute very quickly, it is recommended that you store the 
> > > data passed and process it later.
> > >
> > > aj.
> > >
> > >
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> >
> >
> > --
> > - Robert Jr Ohannessian
> > http://bob.allegronetwork.com/
> >
> >
> >
> >
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>
>
>
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--
- Robert Jr Ohannessian
http://bob.allegronetwork.com/