OnPaint in ODFViewWPF

Technical Support Apryse SDK
1

Hi,

i want to port my pdf viewer from windows forms to wpf.
i used the method onPaint in windows forms. But onPaint is not available in WPF.

        protected override void OnPaint(PaintEventArgs e)
        {
            if (base.GetDoc() == null)
            {
                return;
            }
            //Draw something
        }

If the user select an menu button i want to draw something. is there any way to do this also in wpf?

2

Hi David,

WPF model is different from WinForms… It is sort of similar to HTML DOM model … so there is no OnPaint.

PDFNet SDK for .NET 4+ (http://www.pdftron.com/pdfnet/downloads.html) includes WPF specific control (pdftron.PDF.PDFViewCtrlWPF). For a sample of how to use it, please take a look at PDFViewWPF and PDFViewWPFSimple (which are included in PDFNet/Samples folder).

3

This means there is no possibility to draw something on the PDFViewerWpf?