Adding functions to a program

I've made a window with a few buttons in it. When you click on the buttons, they don't work if I do what is shown below. I have no idea why it doesn't quite work, and was hoping that some1 could help me out.

Code:

if(LOWORD(wParam) == 5){
                             if(HIWORD(wParam) == BN_CLICKED){
                                               HostSession();
                                               }
           }

The function HostSession is used as below. I'm probably wrong, but I think it might be the void, anyway, hope some1 can help.

Code:

void HostSession()
{
     MessageBox(NULL, "Only testing if the function works", "Testing", MB_OK);
};

Hmm, can't see anything wrong with your code. Show us the rest.

Are you handling the WM_COMMAND message? Is 5 the correct button identifier?

yer, the "5" button (or window) identifier, I compile and try all the buttons and nothing gives a message box. I'm using the WM_COMMAND message to get the buttons to work.

Can you post the whole code?

ok, I'll post the code when I get home. I might have come up with a solution. I might be able to use an inline function instead. It might work, I'm not sure yet

Here is all the relavent code that I have written so far...

Code:

HINSTANCE g_hinst;

I think you meant to declare g_hinst as a global variable. As it stands now, g_hinst is never initialized before it is used. Declare the variable as global, and then in your WinMain() function put the following:

Code:

g_hinst = hThisInstance;

Also, it is a good idea to check the return values of CreateWindowEx() to make sure there are no errors.

Thanks for the advice, I'll take it onboard

I've figuared out what was wrong, I got a bit mixed up with the bracket things (not sure about the terminology) with one of the IF statements in the WM_COMMAND part of the program.