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Eric Schlegel wrote:
On May 22, 2006, at 9:37 PM, Graeme Gill wrote:
Cross platform compatibility, historical reasons, and
simplicity. If I mix in any other language, it will be
C++ to be able to use WxWidgets, again for cross platform
compatibility.
OK, but keep in mind that Objective C is probably the most common
language being used today to provide new system services in Mac OS X.
It will become more and more difficult to build a fully savvy Mac OS X
application without using some Objective C-based APIs. It would behoove
all Mac OS X developers to become familiar with Objective C.
This seems like a really bad move to me. There's a bigger world
for applications than just MAC OS X, and confining full functionality
to a language that's effectively platform specific, seems like
an attempt at "lock in". Since it's easy to call C code
from C++ and (presumably) Objective C, not to mention lots
of other languages (ie. scripting languages), it would
seem to me that the sensible approach is to create base
system API's to be C compatible, and base other language
bindings on top of that.
The alternative for cross platform development is probably a horrible
translation layer, where Objective C API's are encased in C, so that
they can be invoked from other languages. Needless to say, if
that is the only alternative, full MAC OS X support will probably
lag behind, and there will be fewer applications for the platform.
Could you describe again exactly what you're trying to accomplish?
Maybe I've misunderstood your goals. You mentioned setting a custom
cursor per window, but you also mentioned wanting to hide the cursor.
I'm not quite sure how these intersect.
It's not that complicated. For my particular window, I want to make
sure that the cursor can't get in front of it. So either the
cursor should be hidden whenever its in my window, or it should
switch to a transparent cursor. Having the window manager
switch the cursor is what I'd like, since I don't want to
have to create a thread to service window events.
Graeme Gill.
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