Implementations details of drag and drop of file path in cocoa.
- by foo
Hi,
I'm trying to get a part of my window to react to drag and drop. In this case to copy the file path to the file being dropped on the view. I have looked over some documentation but I still have some problems to see exactly where I should implement my methods for drag and drop.
I have seen some examples but almost all of them assumes that I want to drop an image on the view. I'm pretty new to cocoa and Xcode so, I have some problems with seeing the exact relation between interface builder and the generated code.
I have created a subclass to NSView, called drop zone like this:
#import <Cocoa/Cocoa.h>
@interface dropZone : NSView {
}
@end
I then use an NSRect to color it grey like this:
#import "dropZone.h"
@implementation dropZone
- (void)drawRect:(NSRect)rect
{
NSRect bounds = [self bounds];
[[NSColor grayColor] set];
[NSBezierPath fillRect:bounds];
}
@end
I then drag this class to my window in interface builder. But I will need to implement the registerForDraggingTypes method, but where? I have also seen a convenience method in the Apple docs for file paths like this: dragFile:fromRect:slideBack:event: that might work.
