Guillaume 2009-07-05 08:58
I would like to know how I can enable my secondary monitor programmatically under Windows Vista.
What I currently do is:
<![CDATA[
EnumDisplayDevices(null, (uint)id, ref d, (uint)0);
...
EnumDisplaySettings(d.DeviceName, -2, ref mode0);
...
DEVMODE dm = mode0;dm.dmPosition.x = 1440;
dm.dmFields = DM_POSITION;
long result = ChangeDisplaySettingsEx(d.DeviceName, ref dm, IntPtr.Zero, CDS_NORESET| CDS_UPDATEREGISTRY, IntPtr.Zero);
result = ChangeDisplaySettingsEx(null, ref dm, IntPtr.Zero, CDS_UPDATEREGISTRY, IntPtr.Zero);
]]>
But it doesn't work. I get 0 for the first ChangeDisplaySettingsEx and -1 for the second one.
Could you help me ?
What did I do wrong ?
Thank you,
Guillaume.
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