[Dev-C++] howto print into a window

[JS <jsc...@gm...>]

Hello i used the method shown in the example hello to print into a 
windows -

but i did not succeed in placing variables there !

I also could not print at another point of the programm -
somehow the window is not updated (allthough i induced this)

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a second question would be - howto place a variables value and 
also normal text into a grafik screen -
i used the open gl app to turn it into my desired prog.
all works fine but i do not know, how to place a text
(some explanations) and running vaklues into it.

any help ?
example code ?