private static DC_PAPER_SIZE[] ReadDC_PAPER_SIZEArray(HGlobalBuffer buffer, int itemByteSize)
{
int nItems = buffer.Length / itemByteSize;
DC_PAPER_SIZE[] result = new DC_PAPER_SIZE[nItems];
bool shouldRelease = false;
buffer.Handle.DangerousAddRef(ref shouldRelease);
try
{
IntPtr baseAddr = buffer.Handle.DangerousGetHandle();
for (int i = 0, offset = 0; i < nItems; i++, offset += itemByteSize)
{
int w = Marshal.ReadInt32(baseAddr, offset);
int h = Marshal.ReadInt32(baseAddr, offset + (itemByteSize / 2));
result[i] = new DC_PAPER_SIZE(w, h);
}
return(result);
}
finally
{
if (shouldRelease)
{
buffer.Handle.DangerousRelease();
}
}
}
/// <summary>
/// Get the default paper width and height
/// </summary>
/// <param name="defaultDevMode">devMode that contains the code for the default paper size</param>
/// <param name="mediaSizeCodes">List of supported paperSizeCodes</param>
/// <param name="mediaSizes">List of supported paperSize widths and heights</param>
/// <param name="defaultPaperSize">Out parameter that recieves the default paper width and height</param>
/// <returns>True if the call succeded</returns>
public bool GetDefaultPaperSize(DevMode defaultDevMode, IList <short> paperSizeCodes, IList <DC_PAPER_SIZE> paperSizes, out DC_PAPER_SIZE defaultPaperSize)
{
defaultPaperSize = new DC_PAPER_SIZE();
if (defaultDevMode == null)
{
if (paperSizes.Count > 0)
{
defaultPaperSize = paperSizes[0];
return(true);
}
return(false);
}
else
{
bool hasWidth = false;
hasWidth = defaultDevMode.IsFieldSet(DevModeFields.DM_PAPERWIDTH);
if (hasWidth)
{
defaultPaperSize.Width = defaultDevMode.PaperWidth;
}
bool hasHeight = false;
hasHeight = defaultDevMode.IsFieldSet(DevModeFields.DM_PAPERWIDTH);
if (hasHeight)
{
defaultPaperSize.Height = defaultDevMode.PaperLength;
}
if (!hasWidth || !hasHeight)
{
if (defaultDevMode.IsFieldSet(DevModeFields.DM_PAPERSIZE))
{
int defaultPaperSizeIndex = paperSizeCodes.IndexOf(defaultDevMode.PaperSize);
if (0 <= defaultPaperSizeIndex && defaultPaperSizeIndex < paperSizes.Count)
{
if (!hasWidth)
{
defaultPaperSize.Width = paperSizes[defaultPaperSizeIndex].Width;
}
if (!hasHeight)
{
defaultPaperSize.Height = paperSizes[defaultPaperSizeIndex].Height;
}
hasWidth = hasHeight = true;
}
}
}
return(hasWidth && hasHeight);
}
}
