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PONSWindow with round corners and shadow
 

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    <p>I'm trying to crate a <code>NSWindow</code> without <em>title bar</em> (<code>NSBorderlessWindowMask</code>) with round corners and a shadow, similar to the below "Welcome to Xcode" window.</p> <p><img src="https://i.stack.imgur.com/XJc9r.png" alt="Welcome to Xcode"></p> <p>I make a subclass of <code>NSWindow</code>:</p> <pre><code>@implementation FlatWindow - (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag { self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:bufferingType defer:flag]; if ( self ) { [self setOpaque:NO]; [self setBackgroundColor:[NSColor clearColor]]; [self setMovableByWindowBackground:TRUE]; [self setStyleMask:NSBorderlessWindowMask]; [self setHasShadow:YES]; } return self; } - (void) setContentView:(NSView *)aView { aView.wantsLayer = YES; aView.layer.frame = aView.frame; aView.layer.cornerRadius = 10.0; aView.layer.masksToBounds = YES; [super setContentView:aView]; } @end </code></pre> <p>And a subclass of <code>NSView</code>:</p> <pre><code>@implementation ColoredView - (void)drawRect:(NSRect)dirtyRect { [super drawRect:dirtyRect]; [[NSColor windowBackgroundColor] set]; NSRectFill(dirtyRect); } @end </code></pre> <p>This gives me a window without <em>title bar</em> with round corners, but the default shadow on <code>NSWindow</code> is gone. How can I add the default shadow to this window?</p> <p><img src="https://i.stack.imgur.com/Opd9S.png" alt="Flat window"></p> <p><strong>EDIT1:</strong></p> <p>NSWindow with <code>NSShadow</code>. This shadow is not shown.</p> <pre><code>@implementation FlatWindow - (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag { self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:bufferingType defer:flag]; if ( self ) { [self setOpaque:NO]; [self setBackgroundColor:[NSColor clearColor]]; [self setMovableByWindowBackground:TRUE]; [self setStyleMask:NSBorderlessWindowMask]; [self setHasShadow:YES]; } return self; } - (void) setContentView:(NSView *)aView { aView.wantsLayer = YES; aView.layer.frame = aView.frame; aView.layer.cornerRadius = 10.0; aView.layer.masksToBounds = YES; NSShadow *dropShadow = [[NSShadow alloc] init]; [dropShadow setShadowColor:[NSColor blackColor]]; [dropShadow setShadowBlurRadius:10.0]; [aView setShadow: dropShadow]; [super setContentView:aView]; } @end </code></pre>
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