public static double ConvertScreenPixelsToMapUnits(IScreenDisplay scrnDsp, double pixels)
{
IDisplayTransformation dspTransform = scrnDsp.DisplayTransformation;
double refScale = dspTransform.ReferenceScale;
if (refScale != 0)
{
double scaleRatio = dspTransform.ScaleRatio;
double pixelCount = dspTransform.ToPoints(scaleRatio);
double pixelSize = (double)scaleRatio / (double)pixelCount;
return(pixelSize * pixels);
}
else
{
tagRECT deviceFrame = dspTransform.get_DeviceFrame();
int pixelExtent = deviceFrame.right - deviceFrame.left;
IEnvelope visBounds = dspTransform.VisibleBounds;
double pixelSize = (double)visBounds.Width / (double)pixelExtent;
return(pixelSize * pixels);
}
}
