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Dynamically creating Cocoa window:

Anonymous User 1683 12-Oct-2015

I want to creae Cocoa window at runtime, I was trying to generate dynamic window but it is not working,
this is my code:

NSRect myFrame = NSMakeRect(0, 0, 100, 100);
NSUInteger mask = NSBorderlessWindowMask;
NSRect myRect = [NSWindow contentRectForFrameRect:myFrame mask:mask];
NSWindow * myWindow =  [[NSWindow alloc] initWithContentRect:myRect
                       mask:mask backing: NSBackingStoreRetained
                       defer:false];
[myWindow setBackgroundColor:[NSColor blueColor]];
[myWindow display];

My code is generating error and I am new in iOS so I am unable to solve this problem,
please anyone help me.

iphone iphone  ios  objective c 
Updated on 12-Oct-2015
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1 Answers

Tarun Kumar

Tarun Kumar

12-Oct-2015

The problem is that you don't want to call display, you want to call either makeKeyAndOrderFront or orderFront depending on whether or not you want the window to become the key myWindow. You should also probably use NSBackingStoreBuffered.
This code will create your borderless, green window at the bottom left of the screen:

NSRect myFrame = NSMakeRect(0, 0, 100, 100);
NSWindow* myWindow  = [[[NSWindow alloc] initWithContentRect:myFrame
                    mask:NSBorderlessWindowMask
                    backing:NSBackingStoreBuffered
                    defer:NO] autorelease];
[myWindow setBackgroundColor:[NSColor greenColor]];
[myWindow makeKeyAndOrderFront:NSApp];

- Don't forget to assign myWindow to a strong/retaining property!
- Under ARC, not doing so will cause it to disappear immediately;
- without ARC, the window will be leaked.

You can make the sender for makeKeyAndOrderFront or orderFront whatever is appropriate for your situation.

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