MacOs监听文件拖拽入窗口

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#import <Cocoa/Cocoa.h>

@interface DragView : NSView

@property(nonatomic,assign)BOOL isDragIn;

@end

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#import "DragView.h"

@implementation DragView

- (void)drawRect:(NSRect)dirtyRect {

    [super drawRect:dirtyRect];

    [self registerForDraggedTypes:[NSArray arrayWithObjects:NSFilenamesPboardType,nil]];

    if(_isDragIn) {

        NSLog(@"拖拽了");

    }

    // Drawing code here.

}

- (NSDragOperation)draggingEntered:(id)sender{

    _isDragIn=YES;

    [self setNeedsDisplay:YES];

    return NSDragOperationCopy;

}

- (void)draggingExited:(id)sender{

    _isDragIn=NO;

    [self setNeedsDisplay:YES];

}

- (BOOL)prepareForDragOperation:(id)sender{

    _isDragIn=NO;

    [self setNeedsDisplay:YES];

    return YES;

}

- (BOOL)performDragOperation:(id)sender{

    if([sender draggingSource] !=self){

        NSArray* filePaths = [[sender draggingPasteboard] propertyListForType:NSFilenamesPboardType];

        NSLog(@"文件地址%@",filePaths);

    }

    return YES;

}

@end

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