如何以编程方式创建 NSTextField？
我想以编程方式创建 NSTextField 。我是 Mac 应用程序开发新手。
有人能帮我吗？
更新：
我尝试了这段代码
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
NSView *myView = [[NSView alloc] init];
NSRect frameRect = NSMakeRect(20,20,100,140);
NSTextField *myTextField = [[NSTextField alloc] initWithFrame:frameRect];
[myView addSubview:myTextField];
}
这什么也没做。如果我有任何错误，请纠正我。
谢谢。
I want to create NSTextField programmatically. I am new to Mac App Development.
Can anyone help me in this ?
Update :
I tried this code
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
NSView *myView = [[NSView alloc] init];
NSRect frameRect = NSMakeRect(20,20,100,140);
NSTextField *myTextField = [[NSTextField alloc] initWithFrame:frameRect];
[myView addSubview:myTextField];
}
This does nothing. Please correct me if i'm wrong anywhere.
Thank you.
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评论（2）
在 Cocoa 中以编程方式创建 UI 元素非常简单。
它涉及两个步骤：
创建视图并为其设置框架。
将其作为子视图添加到任何超级视图。
以下片段将帮助您更好地理解。
Creating UI elements programmatically is very simple in Cocoa.
It involves two steps:
Create the view and set a frame to it.
Add it as a subview to any super view.
Following snippet will you help you understand better.
看起来您正在创建一个 NSTextField ，但您没有将其添加到视图层次结构中可见的任何位置。您的应用程序可能包含一个或多个 NSWindow 实例；如果您希望视图出现在特定窗口中，则应将其添加为该窗口内容视图的子视图。
It looks like you're creating an
NSTextFieldOK, but you're not adding it to anywhere visible in the view hierarchy. Your app probably contains one or moreNSWindowinstances; if you want a view to appear in a particular window, you should add it as a subview of that window's content view.