You've probably used the GetOpenFolderItem function to display an open file
dialog box so the user can select a file. This can also be used (with the
appropriate file type) to select applications. On Mac OS X however, not all
applications are the same. Some applications (like Mail for example) come in
"package" form. This means that the item the user selects in the Finder is
not in fact a file but is actually a special type of folder that represents
the application. Unfortunately, the GetOpenFolderItem function does not
support application packages.
The good news is the OpenDialog class does. The OpenDialog class was
designed to provide a more powerful and flexible way to present an open file
dialog. Given that you've added the "application/binary" file type to your
project, the following code will present an open file dialog box, let the
user choose any file and then launch it:
dim f As FolderItem
dim d as OpenDialog
d = new OpenDialog
d.Filter = "application/binary"
f = d.ShowModal
if f <> nil then
f.Launch
end if
There are also SelectFolderDialog and SaveAsDialog classes as well. These
three new dialog classes were added in REALbasic version 3.5.
This tip was inspired by Stephen Schleick.
--
Geoff Perlman
President and CEO
REAL Software, Inc.
512-328-7325 x711 (voice)
512-328-7372 (fax)
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