Sorry, I misread your original posting. You're trying to make the
view transparent, not the window. Based on what you're seeing when
you set the view's backgroundColor, it looks like the alpha component
is being ignored. I would guess that either the IKImageView only
supports an opaque background or you need to play with it some more
to get transparency to work. One way to find out would be to subclass
IKImageView and override NSView's isOpaque method, returning NO.
Also, depending on what you're trying to do, you could always use
NSImageView since that does respect transparency, at least when I've
tried it with the non-bordered version.
On Feb 9, 2009, at 3:10 PM, Christian Graus wrote:
I'm sorry, I'm not sure that I'm following this.
Looking at it more closely, on the side I want this behaviour, it's
just an IKImageView derived class on top of a window. So, I just
need to make the IKImageView show the image, transparently. I've
tried setting the Opaque setting, but it doesn't appear to have
one. I've also tried setting the background color to what you've
shown here ( it gives me a white background ) or clearColor ( which
gives me a black background ). Is there something I am missing ?
Thanks for your help
Christian
On Tue, Feb 10, 2009 at 9:18 AM, Steve Christensen
<puns...@mac.com> wrote:
Something similar to what you're asking was discussed on this list
last week. To get you started:
[window setOpaque:NO];
[window setBackgroundColor:[NSColor colorWithCalibratedWhite:1.0
alpha:0.5]];
On Feb 9, 2009, at 1:55 PM, Christian Graus wrote:
I have a window with an image showing on it. Above this I have a
window,
which contains an IKImageView derived class. The IKImageView has a
PNG in
it, which has a transparency layer. What I need to do, is to make
that
image appear above the image I have in my main window, that is, the
control
needs to be transparent, so that one picture appears above
another. I've
found a sample that sets the window alpha, but that fades the whole
window,
I just want to make the background transparent. I'd appreciate any
suggestions.
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