Debug

Hello friend,
When i run one of my application which is written in VC++ & OpenGL doesn't give the correct output,but if i place a break point on LBUTTOBDOWN
function and debug it.It's give correct output.
What is error in my code I don't understand?
please help me?

Rajiv Kumar
[319 byte] By [Rajiv Kumar] at [2007-11-15 22:24:26]