objective-c - cocoa :如何重新打开关闭的窗口？

Question

我制作的程序没有 nib\xib 文件。这是简单的 NSOpengGl 窗口。它工作正常，但是当我关闭窗口(红色按钮)并想再次打开它(通过单击任务栏图标)时 - 它不起作用。applicationShouldHandleReopen - 不调用。这是我的代码:

   @interface OGLView: NSOpenGLView <NSApplicationDelegate,NSWindowDelegate>
   @end

   @implementation OGLView
   -(BOOL)applicationShouldHandleReopen:(NSApplication *)theApplication hasVisibleWindows:(BOOL)flag
 {
  printf("bingo");//does not called  
 return YES;
 }

@end

和初始化:

....
view = [[OGLView alloc] initWithFrame:glRect pixelFormat:fmt];
[[view openGLContext] makeCurrentContext];

win = [ [NSWindow alloc]
      initWithContentRect: e
       styleMask:
      NSTitledWindowMask
     | NSClosableWindowMask
       |NSMiniaturizableWindowMask
      |  NSResizableWindowMask       
       backing: NSBackingStoreBuffered
       defer: YES ];

[win orderFrontRegardless];
[win setReleasedWhenClosed:NO];
[win setContentView:view];
[win makeFirstResponder:view];
[win setAcceptsMouseMovedEvents:YES];
[win setContentView:view];
[view setNeedsDisplay:YES];

[win setDelegate:view ];

[view display];  
[win makeKeyAndOrderFront: view];
...

我认为 applicationShouldHandleReopen 不会被调用，因为它必须不是从 NSView 对象调用而是从委托(delegate)调用。但我正在使用

[win setDelegate:view ];

我如何调用这个委托(delegate)方法？谢谢!

Answer 1

在应用程序“applicationShouldHandleReopen”方法中使您的窗口 orderFront

 -(BOOL)applicationShouldHandleReopen:(NSApplication *)theApplication hasVisibleWindows:(BOOL)flag
 {
    [win makeKeyAndOrderFront:self];
    return YES;
 }

您应该在应用程序委托(delegate)中调用“applicationShouldHandleReopen”方法，而不是在 View 内。