The code below demonstrates how to resize a form to the working area on the desktop using GetScreenRect.
Private Sub frmFullScreen_Load _ (ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Load Me.Location = My.Computer.Screen.WorkingArea.Location Me.Size = My.Computer.Screen.WorkingArea.Size 'and maybe place an "exit" button to the bottom right corner of the borderless form: 'm_btnFullScreenExit.Location() = _ Me.Size - m_btnFullScreenExit.Size - _ New System.Drawing.Size(3, 3) End Sub