A typical Problem

I have a VB application through which i can send and recieve messsages and whenever new message comes a new message notification window pops up.

If any application other than my appication is active and if I receive message my VB application gets activated and all the open windows of my VB application comes over the window of that application ,which i do not want.

I solved this problem by minimising all the windows of my VB application whenever my VB application is not in focus and any new message arrives using showWindow(hWnd,2) function.

It works fine when I run my VB application through IDE but If i make an exe of it and run it i am not able to maximise my VB application windows by clicking on the task bar and its Maximise option is coming disabled.

I need help as why this is happening.What is the differnce in running through IDE or through exe