Esempio n. 1
0
 public static extern int ChangeDisplaySettings(ref DEVMODE devMode, int flags);
Esempio n. 2
0
        public static string ChangeResolution(bool inverted)
        {
            DEVMODE dm = GetDevMode();

            if (0 != NativeMethods.EnumDisplaySettings(null, NativeMethods.ENUM_CURRENT_SETTINGS, ref dm))
            {
                // swap width and height
                int temp = dm.dmPelsHeight;
                dm.dmPelsHeight = dm.dmPelsWidth;
                dm.dmPelsWidth  = temp;

                if (!inverted)
                {
                    // determine new orientation based on the current orientation
                    switch (dm.dmDisplayOrientation)
                    {
                    case NativeMethods.DMDO_DEFAULT:
                        //dm.dmDisplayOrientation = NativeMethods.DMDO_270;
                        //2016-10-25/EBP wrap counter clockwise
                        NativeMethods.SetAutoRotation(false);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_90;
                        break;

                    case NativeMethods.DMDO_90:
                        NativeMethods.SetAutoRotation(true);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_DEFAULT;
                        break;

                    case NativeMethods.DMDO_270:
                        NativeMethods.SetAutoRotation(true);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_180;
                        break;

                    case NativeMethods.DMDO_180:
                        NativeMethods.SetAutoRotation(false);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_270;
                        break;

                    default:
                        // unknown orientation value
                        // add exception handling here
                        break;
                    }
                }
                else
                {
                    // determine new orientation based on the current orientation
                    switch (dm.dmDisplayOrientation)
                    {
                    case NativeMethods.DMDO_DEFAULT:
                        //dm.dmDisplayOrientation = NativeMethods.DMDO_270;
                        //2016-10-25/EBP wrap counter clockwise
                        NativeMethods.SetAutoRotation(false);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_270;
                        break;

                    case NativeMethods.DMDO_270:
                        NativeMethods.SetAutoRotation(true);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_DEFAULT;
                        break;

                    case NativeMethods.DMDO_90:
                        NativeMethods.SetAutoRotation(true);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_180;
                        break;

                    case NativeMethods.DMDO_180:
                        NativeMethods.SetAutoRotation(false);
                        dm.dmDisplayOrientation = NativeMethods.DMDO_90;
                        break;

                    default:
                        // unknown orientation value
                        // add exception handling here
                        break;
                    }
                }
                int iRet = NativeMethods.ChangeDisplaySettings(ref dm, NativeMethods.CDS_TEST);

                if (iRet == NativeMethods.DISP_CHANGE_FAILED)
                {
                    return("Unable To Process Your Request. Sorry For This Inconvenience.");
                }
                else
                {
                    iRet = NativeMethods.ChangeDisplaySettings(ref dm, NativeMethods.CDS_UPDATEREGISTRY);
                    switch (iRet)
                    {
                    case NativeMethods.DISP_CHANGE_SUCCESSFUL:
                    {
                        return("Success");
                    }

                    case NativeMethods.DISP_CHANGE_RESTART:
                    {
                        return("You Need To Reboot For The Change To Happen.\n If You Feel Any Problem After Rebooting Your Machine\nThen Try To Change Resolution In Safe Mode.");
                    }

                    default:
                    {
                        return("Failed To Change The Resolution");
                    }
                    }
                }
            }
            else
            {
                return("Failed To Change The Resolution.");
            }
        }
Esempio n. 3
0
 public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE devMode);