获取文件的QuickLook预览图像

Question

有没有办法获得文件的快速预览图像？

我正在寻找这样的东西:

NSImage *image = [QuickLookPreviewer quickLookPreviewForFile:path];

Answer 1

参见QLThumbnailRequest文档：https : //developer.apple.com/library/mac/#documentation/UserExperience/Reference/QLThumbnailRequest_Ref/Reference/reference.html

NSURL *path = aFileUrl;

NSDictionary *options = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:(NSString *)kQLThumbnailOptionIconModeKey];

CGImageRef ref = QLThumbnailImageCreate(kCFAllocatorDefault, (CFURLRef)path, CGSizeMake(600, 800 /* Or whatever size you want */), (CFDictionaryRef)options);