Dear Celaleddin Dev,
This header is hidden from your application's home page only if you run your application in workstation, full-screen workstation, or kiosk mode. By default, you run it in normal mode.
To specify mode in which your application is to run:
- Open your infobase's configuration in Designer
- Open the configuration's properties
- Set an appropriate value for the "Main client application window mode" property
- Apply the changes