如何在屏幕的某个部分添加另一个UIWindow

// 创建新窗口
UIWindow *newWindow = [[UIWindow alloc] initWithFrame:CGRectMake(x, y, width, height)];

// 配置新窗口属性
newWindow.backgroundColor = [UIColor whiteColor];
newWindow.alpha = 0.8;
newWindow.windowLevel = UIWindowLevelNormal;

// 创建并配置新窗口的根视图控制器
UIViewController *rootViewController = [[UIViewController alloc] init];
newWindow.rootViewController = rootViewController;

// 添加子视图到新窗口
UIView *subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, height)];
[subView setBackgroundColor:[UIColor redColor]];
[rootViewController.view addSubview:subView];

// 显示新窗口
newWindow.hidden = NO;