The structure nsrange,nspoint,nssize (cgsize) commonly used in objective-c, Nsrect

1 Nsrange

typedef struct _NSRANGE {
Nsuinteger location;
Nsuinteger length;
} Nsrange;
Functions of the Nsmakerange

Ns_inlinez is an inline function

typedef nsrange *nsrangepointer;

Ns_inline nsrange nsmakerange (Nsuinteger Loc, Nsuinteger len) {
Nsrange R;
r.location = loc;
R.length = Len;
return R;
}
How to use

Nsrange represents a range.
Nsrange range;
Range.location = 18;
Range.length = 34;

NSLog (@ "Location is%zi", range.location);
NSLog (@ "Length is%zi", range.length);

Quickly create
Range = Nsmakerange (8, 10);
NSLog (@ "Location is%zi", range.location);
NSLog (@ "Length is%zi", range.length);

Nsstringfromrange the above structure into a string type, print out

nsstring* str1 = nsstringfromrange (range);

%@ is an OC object, range represents a struct, and Str is an OC object
NSLog (@ "Rang is%@", str1);
2 Nspoint

Nspoint's prototype

struct Cgpoint {
CGFloat x;
CGFloat y;
};
Nsmakepoint function

Ns_inline nspoint Nsmakepoint (cgfloat x, cgfloat y) {
Nspoint p;
p.x = x;
P.y = y;
return p;
}
Cgpointmake function

Cgpointmake (CGFloat x, cgfloat y)
{
Cgpoint p; p.x = x; P.y = y; return p;
}
How to use

Nspoint refers to the position
Nspoint Point;

Assigning values to points inside a struct
Point.x = 10;
Point.y = 10;

Quick Create point
Point = Nsmakepoint (10, 18);

A common function for creating points is Cgpointmake
Point = Cgpointmake (29, 78);
nsstring* str2 = Nsstringfrompoint (point);
NSLog (@ "point is%@", str2);
3 cgsize

Cgsize's prototype

struct Cgsize {
CGFloat width;
CGFloat height;
};
nsmakesize function

Ns_inline nssize nsmakesize (cgfloat W, cgfloat h) {
Nssize s;
S.width = W;
S.height = h;
return s;
}
Cgsizemake function

Cgsizemake (cgfloat width, cgfloat height)
{
Cgsize size; Size.width = width; Size.Height = height; return size;
}
How to use

Nssize size;

Size.width = 100;
Size.Height = 12;
Size = Nsmakesize (12, 12);
Size = Cgsizemake (11, 11);

nsstring* STR3 = nsstringfromsize (size);
NSLog (@ "%@", STR3);
4 CGRect

CGRect's prototype

struct CGRect {
Cgpoint origin;
Cgsize size;
};
Functions of the CGRectMake

CGRectMake (CGFloat x, cgfloat y, cgfloat width, cgfloat height)
{
CGRect rect;
rect.origin.x = x; RECT.ORIGIN.Y = y;
Rect.size.width = width; Rect.size.height = height;
return rect;
}
Nsmakerect function

Ns_inline nsrect Nsmakerect (cgfloat x, CGFloat y, CGFloat W, CGFloat h) {
Nsrect R;
r.origin.x = x;
R.ORIGIN.Y = y;
R.size.width = W;
R.size.height = h;
return R;
}
How to use

Includes both size and position
Nsrect rect;
rect.origin.x = 12;
RECT.ORIGIN.Y = 14;
Rect.size.width = 12;
Rect.size.height = 15;

Quick Create method
Rect = CGRectMake (12, 12, 12, 12);
Rect = Nsmakerect (11, 11, 11, 11);

Convert to a string to print out
nsstring* STR5 = nsstringfromrect (rect);
NSLog (@ "rect is%@", STR5);

The structure nsrange,nspoint,nssize (cgsize) commonly used in objective-c, Nsrect