The Trace macro in VC

Trace macros for VC under the program debugging is very useful things, with a similar function of printf; The macro only appears in the debug version of the program, and the macro disappears when you release it, which helps you reduce the amount of code when it releases.

Use is very simple, the format is as follows:

TRACE ("ddddddddddd");

TRACE ("wewe%d", 333);

There are also trace0,trace1,trace2 ... correspond to 0,1,2 respectively. A parameter

Trace information is exported to the Output window of the VC IDE environment (which is the window to which you compile the project error), but only if you are running your debug version in VC.