iOS Graphics context stack

1- (void) DrawRect: (cgrect) Rect2 {3     //Get Context4Cgcontextref CTX =Uigraphicsgetcurrentcontext ();5 6     //save a copy of the purest graphics context7     //call this method will copy a context to the stack, save a few times can be called several times cgcontextrestoregstate (CTX), if saved once, take the second time will be an error8 9 cgcontextsavegstate (CTX);Ten //cgcontextsavegstate (CTX); One      A     //First line -     //saving drawing information with a graphical context -Cgcontextmovetopoint (CTX, Max, -); theCgcontextaddlinetopoint (CTX, -, -); -      -     //set the state of the first line -Cgcontextsetlinewidth (CTX,Ten); + Cgcontextsetlinecap (CTX, kcglinecapround); -[[Uicolor Redcolor]Set]; +      A     //Rendering at Cgcontextstrokepath (CTX); -      -      -     //Restore the purest graphics context that you started to save - cgcontextrestoregstate (CTX); -      in     //Second Line -Cgcontextmovetopoint (CTX, the, -); toCgcontextaddlinetopoint (CTX, the, Max); + Cgcontextstrokepath (CTX); - cgcontextsavegstate (CTX); the  *  $     //RenderingPanax Notoginseng Cgcontextstrokepath (CTX); -      the}

iOS Graphics context stack