private void btnRotate_Click(object sender, EventArgs e)
{
DisplayConfigRotation displayConfigRotation = (DisplayConfigRotation)Enum.Parse(typeof(DisplayConfigRotation), comRotate.Text);
int numPathArrayElements;
int numModeInfoArrayElements;
const QueryDisplayFlags pathType = QueryDisplayFlags.OnlyActivePaths;
// query active paths from the current computer.
// note that 0 is equal to SUCCESS!
// TODO; HARDCODE MAGIC VALUES AWAY.
if (CCDWrapper.GetDisplayConfigBufferSizes(pathType, out numPathArrayElements,
out numModeInfoArrayElements) == 0)
{
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
// TODO; FALLBACK MECHANISM THAT HANDLES DIFFERENT VALUES FOR ZERO.
if (CCDWrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements,
modeInfoArray, IntPtr.Zero) == 0)
{
pathInfoArray[0].targetInfo.rotation = displayConfigRotation;
CCDWrapper.SetDisplayConfig(numPathArrayElements, pathInfoArray, numModeInfoArrayElements,
modeInfoArray, SdcFlags.Apply | SdcFlags.UseSuppliedDisplayConfig);
}
}
}
public static Boolean GetDisplaySettings(ref CCDWrapper.DisplayConfigPathInfo[] pathInfoArray, ref CCDWrapper.DisplayConfigModeInfo[] modeInfoArray, Boolean ActiveOnly)
{
uint numPathArrayElements;
uint numModeInfoArrayElements;
// query active paths from the current computer.
CCDWrapper.QueryDisplayFlags queryFlags = CCDWrapper.QueryDisplayFlags.AllPaths;
if (ActiveOnly)
{
queryFlags = CCDWrapper.QueryDisplayFlags.OnlyActivePaths;
}
var status = CCDWrapper.GetDisplayConfigBufferSizes(queryFlags, out numPathArrayElements, out numModeInfoArrayElements);
if (status == 0)
{
pathInfoArray = new CCDWrapper.DisplayConfigPathInfo[numPathArrayElements];
modeInfoArray = new CCDWrapper.DisplayConfigModeInfo[numModeInfoArrayElements];
status = CCDWrapper.QueryDisplayConfig(queryFlags,
ref numPathArrayElements, pathInfoArray, ref numModeInfoArrayElements,
modeInfoArray, IntPtr.Zero);
if (status == 0)
{
return true;
}
}
return false;
}
