我应该使用什么函数在mac OS X中打开文件？

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSWorkspace *workspace = [NSWorkspace sharedWorkspace];
        NSString *filePath = @"/path/to/file";
        NSString *appName = @"TextEdit";
        [workspace openFile:filePath withApplication:appName];
    }
    return 0;
}

open /path/to/file