How to instantiate a control in code instead of using Interface Builder ?
Post: #1
I really appreciate the combination of the interface builder and Xcode altogether.
However when I am learning QT, I realize I had been pampered by Apple's Design to a certain extend as I only need to create say a NSLabel instance and use Interface Builder to do the linking and never have to worry about instantiating the Object myself.
But I'm curious, what is the way to instantiate a new hmmm say...NSLabel in the code ?
NSLabel* label = new NSLabel();
Then what ?
What you are seeing here is how QT did it, could anyone create an equivalent in ObjC ? No fancy code please, just bare minimum.
However when I am learning QT, I realize I had been pampered by Apple's Design to a certain extend as I only need to create say a NSLabel instance and use Interface Builder to do the linking and never have to worry about instantiating the Object myself.
But I'm curious, what is the way to instantiate a new hmmm say...NSLabel in the code ?
NSLabel* label = new NSLabel();
Then what ?
What you are seeing here is how QT did it, could anyone create an equivalent in ObjC ? No fancy code please, just bare minimum.
Code:
#include <QApplication>
#include <QWidget>
#include <QLabel>
int main (int argc, char * argv [ ])
{
QApplication app(argc, argv); //NSApplication in ObjC
//These two lines merely created a window and set the title bar text.
QWidget* window = new QWidget();
window->setWindowTitle("Hello World");
QLabel* label = new QLabel(window);//Create a label and inform the it belongs to window.
label->setText("Hello World");
window->show();
return app.exec();
}
Post: #2
First off, there's no such thing as an NSLabel. There's an NSTextField in Cocoa, and UILabel on the phone.
Second, you simply create it.
Third, you add it to some view:
Fourth, you do whatever else you need to do with it.
Second, you simply create it.
Code:
UILabel * label = [[UILabel alloc] initWithFrame:NSMakeRect(0, 0, 120, 20)];Third, you add it to some view:
Code:
[view addSubview:label];Fourth, you do whatever else you need to do with it.
Post: #3FreakSoftware Wrote:Third, you add it to some view:
Now, if you want some view to be created programmatically, you'll probably want to create an NSWindow (see documentation) and add things to its contentView. I tried putting together a complete example earlier, but it didn't work on the first try and I didn't have time to figure out what I'd missed... If you're still having problems later, I might be able to put together a working example when I'm at home.
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