Google didn't help...All results are unuseful...

Well it's quite simple: You can create String objects with passing char* to the String constructor. 'Text' is something like pointer. gcnew is something like new in c++ but a little bit smarter. So all we have to do is just create new String^ object with szData as value instead of "" ( String is initialized with "" string normally ).

what to laugh? - NS -

Thanks you for your advice. by the way, Can you give me an other algorithm that you think it's suit to solve my trouble? ;)

Thanks indeed, I just asked for algorithm, because I want to study algorithm working with rotate image! I want to learn algorithm that independent with code. If you know which book can help about algorithms, please give me book's name

To draw the line in the screen you need at least one pixel, other thing is the meaning in size of that pixel (according to the MAPMODE). Take a look with CreatePen and similars, you can configure the width, and selecting the object in the DC, you will use the configuration you need/want Greetings. -------- M.D.V. If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

See Creating a Printing Class[^] if helpfuls WhiteSky