I've just started a project, and decided to base it on the following
article on codeproject.com http://www.codeproject.com/shell/StealthDialog.asp

The problem is once i edit the resource file and add extra controls to the Dialog, the dialog no longer continues to function correctly. For instance i can't tab between controls (system default beep also plays)

I've searched around and the only suggestion that would be causing this is that the function IsDialogMessage isn't getting called in the main message loop.

The original code from the project has the following

while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg) || !
IsDialogMessage(msg.hwnd,&msg) )
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}

I've attached zip of the project if thats any help.