/// <summary>
/// Renders the provided graph document to an device independent bitmap (TYMED_HGLOBAL). Please not that this format does not support transparancy, thus the back color provided in the rendering options is used as ground brush first.
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to the device independent bitmap (TYMED_HGLOBAL).</returns>
public static IntPtr RenderAsDIBBitmap_TYMED_HGLOBAL(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
var renderingOptions = GetRenderingOptions(document);
using (var bmp = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format24bppRgb))
{
return(DataObjectHelper.RenderDIBBitmapToHGLOBAL(bmp));
}
}
private IntPtr RenderBitmapDIB(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderBitmapDIB");
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
if (null != _graphDocumentBitmapImage)
{
using (var convertedBitmap = GraphDocumentExportActions.ConvertBitmapToPixelFormat(_graphDocumentBitmapImage, System.Drawing.Imaging.PixelFormat.Format24bppRgb, _graphExportOptions.BackgroundColorForFormatsWithoutAlphaChannel))
{
return(DataObjectHelper.RenderDIBBitmapToHGLOBAL(convertedBitmap));
}
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}