在主窗口上更改Alpha-可可

Question

I want to know if I can slowly increase the alpha MainWindow when I open the app and when I close the app. I know it may involve timers, and things like that, but I never dealt with this kind of thing before. I need your help guys...!

Kevin

Answer 1

Use NSViewAnimation. Despite the name, it works on windows as well as views.

Answer 2

[self setAlphaValue:0];

That'll set the alpha of the window. Just create an NSTimer that either adds or subtracts to bring the alpha up or down. The Value is an <#(CGFloat)windowAlpha#>.