C++: Hide an Application from the Taskbar

(This solution is specific to Borland C++ Builder)

Use this code as your project source to prevent the window from showing up in your windows taskbar.

WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
    try
    {
        Application->Initialize();
        Application->CreateForm(__classid(TForm1), &Form1);
        SetWindowLong(Application->Handle,
          GWL_EXSTYLE,
          GetWindowLong(Application->Handle, GWL_EXSTYLE)
          | WS_EX_TOOLWINDOW) ;
        Application->Run();
    }
    catch (Exception &exception)
    {
        Application->ShowException(&exception);
    }
    return 0;
}

source(s): http://delphi.about.com/od/adptips1999/qt/hidefromtaskbar.htm