public static extern ChangeDisplaySettingsReturnValue ChangeDisplaySettingsEx(
string deviceName,
IntPtr DevMode, // graphics mode
int hwnd, // not used; must be NULL
uint dwflags, // graphics mode options
ref VIDEOPARAMETERS lParam // video parameters (or NULL)
//IntPtr pLparam
);
/// <summary>
///
/// </summary>
/// <param name="index">The graphics mode index</param>
/// <param name="displayCompatableOnly">Include modes the video card can produce, but the monitor can't use.</param>
/// <param name="changeType">Nature of change to perform</param>
/// <returns></returns>
public ChangeDisplaySettingsReturnValue changeResolution(int index, bool displayCompatableOnly, displayChangeType changeType)
{
DEVMODE devmode = initNewDEVMODE();
EnumDisplaySettingsEx(this.DeviceName, index, ref devmode, displayCompatableOnly ? 0 : EDS_RAWMODE);
//return ChangeDisplaySettingsEx(DeviceName, devmode, 0/*null*/, (int)changeType, IntPtr.Zero);
VIDEOPARAMETERS vp = new VIDEOPARAMETERS();
return(ChangeDisplaySettingsEx(DeviceName, ref devmode, 0 /*null*/, (uint)changeType, ref vp));
}
/// <summary>
/// If the display mode change was tempory then return to the default mode.
/// </summary>
public void recoverFromDynamicModeChange()
{
VIDEOPARAMETERS vp = new VIDEOPARAMETERS();
ChangeDisplaySettingsEx(this.DeviceName, IntPtr.Zero, 0, 0, ref vp);
}
