Cocoa 调整窗口大小以适应屏幕

Question

我有 2 台显示器，我想让我的 videoWindow 被放置并缩放到第二台显示器的大小。我想以编程方式执行此操作，因为第二个显示器分辨率可能会改变。我能够将窗口放置在第二台显示器的左下角，但我无法将其缩放以适应。

这一行的警告：

[self.videoWindow setFrame: screenRect];

是：“NSWindow”可能无法响应“setFrame”

// inside my .h file
@property (assign) IBOutlet NSWindow *videoWindow;


// inside my .m file
- (void)windowControllerDidLoadNib:(NSWindowController *) aController
{
    [super windowControllerDidLoadNib:aController];

    NSRect videoPreviewScreenRect;
    NSArray *screenArray = [NSScreen screens];

    //Using index of 1, to get secondary monitor
    NSScreen *videoPreviewScreen = [screenArray objectAtIndex: 1];

    NSRect screenRect = [videoPreviewScreen frame];
    videoPreviewScreenRect = [videoPreviewScreen visibleFrame];

    // Get and set the screen origin based on the second monitors origin
    NSPoint videoScreenOrigin ;
    videoScreenOrigin.x = videoPreviewScreenRect.origin.x;
    videoScreenOrigin.y = videoPreviewScreenRect.origin.y;
    [self.videoWindow setFrameOrigin: videoScreenOrigin];

    // **** THIS LINE DOESN'T WORK ****
    [self.videoWindow setFrame: screenRect];

    [self.videoWindow setBackgroundColor: NSColor.blackColor];
    [self.videoWindow display];
    [self.videoWindow makeKeyAndOrderFront:nil];
}

Answer 1

我能够找出问题所在。

[self.videoWindow setFrame: screenRect];

需要改成这样：

[[self videoWindow] setFrame:screenRect display:YES animate:NO];