com.aspose.words

Example:

public void handleBinaryRasterWarnings() throws Exception
{
    Document doc = new Document(getMyDir() + "WMF with image.docx");

    MetafileRenderingOptions metafileRenderingOptions = new MetafileRenderingOptions();

    // Set the "EmulateRasterOperations" property to "false" to fall back to bitmap when
    // it encounters a metafile, which will require raster operations to render in the output PDF.
    metafileRenderingOptions.setEmulateRasterOperations(false);

    // Set the "RenderingMode" property to "VectorWithFallback" to try to render every metafile using vector graphics.
    metafileRenderingOptions.setRenderingMode(MetafileRenderingMode.VECTOR_WITH_FALLBACK);

    // Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
    // to modify how that method converts the document to .PDF and applies the configuration
    // in our MetafileRenderingOptions object to the saving operation.
    PdfSaveOptions saveOptions = new PdfSaveOptions();
    saveOptions.setMetafileRenderingOptions(metafileRenderingOptions);

    HandleDocumentWarnings callback = new HandleDocumentWarnings();
    doc.setWarningCallback(callback);

    doc.save(getArtifactsDir() + "PdfSaveOptions.HandleBinaryRasterWarnings.pdf", saveOptions);

    Assert.assertEquals(1, callback.mWarnings.getCount());
    Assert.assertEquals("'R2_XORPEN' binary raster operation is partly supported.",
        callback.mWarnings.get(0).getDescription());
}

/// <summary>
/// Prints and collects formatting loss-related warnings that occur upon saving a document.
/// </summary>
public static class HandleDocumentWarnings implements IWarningCallback
{
    public void warning(WarningInfo info)
    {
        if (info.getWarningType() == WarningType.MINOR_FORMATTING_LOSS)
        {
            System.out.println("Unsupported operation: " + info.getDescription());
            this.mWarnings.warning(info);
        }
    }

    public WarningInfoCollection mWarnings = new WarningInfoCollection();
}