On Jan 24, 2017, at 11:17 AM, Richard Charles <rcharles...@gmail.com> wrote:
>
> Consider a window presented as a sheet with background transparency.
>
> - (void)windowDidLoad
> {
> // Produces gray background with transparency.
> NSColor *color = [NSColor colorWithRed:0.5 green:0.5 blue:0.5 alpha:0.9];
> self.window.backgroundColor = color;
> }
>
> - (void)windowDidLoad
> {
> // Produces near white background with no transparency.
> NSColor *color = [NSColor colorWithRed:0.6 green:0.6 blue:0.6 alpha:0.9];
> self.window.backgroundColor = color;
> }
>
> The first case produces a background with transparency.
>
> The second case produces a background with no transparency.
>
> Why does’t the second case yield any transparency?
I can't explain the differences in the two cases, but are you also setting the
window's opaque property to NO? If not, then setting the background color to
partially transparent is not sufficient to reliably make a window transparent.
Regards,
Ken
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