一些简单记录

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1：Xcode设置横竖屏

在RootViewController.mm文件里找到 - (NSUInteger) supportedInterfaceOrientations方法。如果想让程序是竖屏，直接return

UIInterfaceOrientationMaskPortrait。横屏是默认的，当然也可以选择别的，自己跟到源码里找，应该不难。

大概是以下几个

UIInterfaceOrientationMaskPortrait
= (1 <<UIInterfaceOrientationPortrait),

UIInterfaceOrientationMaskLandscapeLeft = (1
<<UIInterfaceOrientationLandscapeLeft),

UIInterfaceOrientationMaskLandscapeRight = (1
<<UIInterfaceOrientationLandscapeRight),

UIInterfaceOrientationMaskPortraitUpsideDown = (1
<<UIInterfaceOrientationPortraitUpsideDown),

UIInterfaceOrientationMaskLandscape =
(UIInterfaceOrientationMaskLandscapeLeft
| UIInterfaceOrientationMaskLandscapeRight),

UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait |
UIInterfaceOrientationMaskLandscapeLeft |
UIInterfaceOrientationMaskLandscapeRight
| UIInterfaceOrientationMaskPortraitUpsideDown),

UIInterfaceOrientationMaskAllButUpsideDown =
(UIInterfaceOrientationMaskPortrait |
UIInterfaceOrientationMaskLandscapeLeft |

UIInterfaceOrientationMaskLandscapeRight)

2:xcode中一些快捷键

command+r 相当于′F5，运行

command+. 停止调试

control+command+Y相当于vs中得F5

fn+F6 相当于vs中得F10，单步调试

fn+F7 相当于vs中得F11，进入代码内部调试

command +/ 给选中代码块改为注释(再来一次改回来)

control + command + 箭头（<- ->）cpp与头文件之间的切换