Labels:text | electronics | screenshot | font | number OCR: Step 1: Initial assignment cstr1 = "Hollo world"; CString 11 30 Hello wond\O .. CString allocates space for "Hello world" and fills CStringData with length and ref count = 1. Step 2: Copy estr2 = cstr1; CString dstri Hello world \ 0 ... CString estir cstr2 points to same object as estri. No allocation required, Just Increment the ref count .. Stop 3: Modify cstr2 = "Goodbye"; CString Hello world \ O .. CString ostr2 Goodbye \ O ... When estr2 is modified, a new memory object is allocated and the data copied from cstri to ostr2 before the modification is made. Ref count for estri Is decremented; ref count for cstr2 set to 1. Figure 5 CString Copy on Modify in Action!
(1999).iso/msysj/aug96/dilaf105.gif){kind=small}
(1999).iso/msysj/aug96/dilaf104.gif){kind=link}
(1999).iso/msysj/aug96/dilaf107.gif){kind=link}