static extern int ChangeDisplaySettingsEx(string lpszDeviceName, ref DEVMODE lpDevMode, IntPtr hwnd, int dwflags, IntPtr lParam);

Declare Function ChangeDisplaySettingsEx Lib "coredll.dll" (ByVal lpszDeviceName As String, ByVal lpDevMode As Byte(), ByVal hwnd As IntPtr, ByVal dwflags As CDSFlags, ByVal lParam As IntPtr) As CDSRet

    ' Flags for ChangeDisplaySettings

    ' Return values for ChangeDisplaySettings

    static extern int ChangeDisplaySettingsEx(string lpszDeviceName,

        ChangeDisplaySettingsEx(null, ref DevM2, IntPtr.Zero, 2, IntPtr.Zero); // 2 = test

        ChangeDisplaySettingsEx(null, ref devmode, IntPtr.Zero, 2, IntPtr.Zero); // 2 = test

        ChangeDisplaySettingsEx(null, ref devmode, IntPtr.Zero, 0, IntPtr.Zero); // 0 = set

    Friend Shared Function ChangeDisplaySettingsEx(ByVal lpszDeviceName As String, ByVal lpDevMode As Byte(), ByVal hwnd As IntPtr, ByVal dwflags As CDSFlags, ByVal lParam As IntPtr) As CDSRet

        Dim ret As CDSRet = ChangeDisplaySettingsEx(Nothing, devMode.Data, IntPtr.Zero, 0, IntPtr.Zero)

Used with ChangeDisplaySettings and ChangeDisplaySettingsEx

Used with ChangeDisplaySettings and ChangeDisplaySettingsEx

public static extern DISP_CHANGE ChangeDisplaySettings(ref DEVMODE devMode, int flags);

Private Shared Function ChangeDisplaySettings(ByRef devMode As DEVMODE, ByVal flags As Integer) As DISP_CHANGE

See also ChangeDisplaySettingsEx

If you are working with multiple monitors use ChangeDisplaySettingsEx instead.

static extern DISP_CHANGE ChangeDisplaySettingsEx(string lpszDeviceName, ref DEVMODE lpDevMode, IntPtr hwnd, ChangeDisplaySettingsFlags dwflags, IntPtr lParam);

Private Shared Function ChangeDisplaySettingsEx(ByVal lpszDeviceName As String, ByRef lpDevMode As DEVMODE, ByVal hwnd As IntPtr, ByVal dwflags As UInteger, ByVal lParam As IntPtr) As DISP_CHANGE

ChangeDisplaySettingsFlags

See also ChangeDisplaySettings

ChangeDisplaySettingsEx(d.DeviceName, ref dm, IntPtr.Zero, CDS_UPDATEREGISTRY, IntPtr.Zero);

    public enum ChangeDisplaySettingsFlags : uint

Public Enum ChangeDisplaySettingsFlags As UInteger