Struct 返回值的方法，不知道怎么写代码

技能讨论
1

坐试验，遇到一个难题:

- (struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; })_applicationFrame;

这种struct 返回值的方法，如何写代码呢，我想修改 CGPoint CGSize 里面的值.

//这样，编译一大堆错误，直接懵逼。

- (struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; })_applicationFrame
{
   return %orig;   
}

错误:

Tweak.xm:23:246: error: redefinition of 'CGRect'
  ...id _logos_meta_method$_ungrouped$UIScreen$mainScreen(_LOGOS_SELF_TYPE_NORMAL Class _LOGOS_SELF_CONST, SEL); static struct CGRect { st...
                                                                                                                               ^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGGeometry.h:46:8: note:
      previous definition is here
struct CGRect {
       ^
Tweak.xm:23:492: error: redefinition of 'CGRect'
  ...(*_logos_orig$_ungrouped$UIScreen$_applicationFrame)(_LOGOS_SELF_TYPE_NORMAL UIScreen* _LOGOS_SELF_CONST, SEL); static struct CGRect ...
                                                                                                                                   ^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGGeometry.h:46:8: note:
      previous definition is here
struct CGRect {
       ^
Tweak.xm:32:15: error: redefinition of 'CGRect'
static struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; ...
              ^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGGeometry.h:46:8: note:
      previous definition is here
struct CGRect {
       ^
3 errors generated.

//这样编译通过，但不知道，怎么改 CGPoint CGSize 其值：

	- (id)_applicationFrame
	{
		NSLog(@"xxxxxxxxxxxxxxxxxxxx");
		return %orig;
	}

//我想应该是这样

- (id)_applicationFrame
{
     id a=%orig;
	 //这里，如何把id a 再转回struct呢？？
     a.size.width=888;
	 a.size.height=888; 
     return a;   
}

求教各位老师，谢谢.

2

id是oc的泛型指针我记得不能跟普通结构体互转。。。。你代码错了，先确定正确的返回类型吧

这什么jb代码

3

多谢老大回复，我是参考这里：

https://github.com/nst/iOS-Runtime-Headers/blob/f53e3d01aceb4aab6ec2c37338d2df992d917536/Frameworks/UIKit.framework/UIScreen.h

１６３行：- (struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; })_applicationFrame;

直接拷过来的。

4

你就不会直接写一个 CGRect ？

5

多谢老师，搞定了