I'm using the same effect in my application.
The problem is, if you use this method, the window might not be there yet. Did
you inspect if the window iVar is actually not nil?
The way I did it is using the windowDidLoad method and call
-(void)windowDidLoad {
[super windowDidLoad]
[splashWindow setAlphaValue:0.0];
}
Works find for me. Code is here:
https://github.com/mstarke/MacPass/blob/master/MacPass/MPOverlayWindowController.m
-Michael
On 16.06.2013, at 10:22, Pax <45rpmli...@googlemail.com> wrote:
> I am trying to set NSWindow (borderless, with no controls) to be transparent
> before I display it (so that I can fade it onto the screen). Unfortunately,
> I don't seem to be able to - it loads, visibly, then sets the opacity to 0
> (resulting in the window flickering at full opacity, before disappearing and
> then fading into view. Sure, it's a fast flick - but it's ugly, and not the
> effect that I'm looking for. Does anyone have any idea how to set opacity to
> 0 before displaying the window?
>
> Before we have the discussion about splash screens by the way, I'd just like
> to say 'I agree - I hate them too'. To justify my actions, this is because
> the app loads into the menu bar, not the dock, and so (in testing) I
> discovered that users thought it hadn't loaded at all. So, on first load
> only (unless specifically requested otherwise in preferences) a splash is
> displayed informing the user that the app has loaded - and to look up to the
> menu bar, not down to the dock.
>
> - (id)initSplash
> {
> if (self = [super initWithWindowNibName:@"SplashScreen"])
> {
> (void) [splashWindow window];
> [splashWindow setAlphaValue:0.0];
> return self;
> }
>
> return nil;
> }
>
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