How can I obtain the C pre-processed file prior to final compilation

[sni]

How do I stop the C compiler after the pre-processor has performed its filtering. I'm trying to apply a coverage tool to my source files, but it gets confused with the compiler directive statements in my code.

[markus kossmann]

If a sourcecode window is activated (clicked),  there is the option "Preprocess Source File" in the options menu.