Keydowncontrol event

[RayB]

Hello,
I am trying to write an application to view pdfs. I have successfully managed to get the viewer to display them, resize them and resize the form it is displayed within. However, I cannot get any of the events to operate - ideally I want to be able to use the keyboard to move through the document. The mouse works fine but the keyboard does not.
I have tried writing handlers for keyboard events outside of the application but while the control has focus they do not work.
Is this feature disabled in the evaluation version?
I have noticed also that the sample VB code does not fully operate either - it does not work with keyboard input or display the mouse coordinates.

I am running Vista with VB.net2008.

Please help.

Thanks.

[Loïc]

Hi,

There is some error into the sample.

The comtrol ket events are raised by the KeyDownControl Event. See: http://guides.gdpicture.com/v5/gdviewer ... ntrol.html

I give you a sample to catch the key arrow press event to move thought the current document:

Code: Select all

Private Sub GdViewer1_KeyDownControl(ByVal sender As Object, ByVal e As AxGdViewerPro4.__GdViewer_KeyDownControlEvent) Handles GdViewer1.KeyDownControl
    Select Case e.keyAscii
            Case 38
                Me.GdViewer1.SetVScrollBarPosition((Me.GdViewer1.GetVScrollBarPosition() - 20))
            Case 40
                Me.GdViewer1.SetVScrollBarPosition((Me.GdViewer1.GetVScrollBarPosition() + 20))
            Case 37
                Me.GdViewer1.SetHScrollBarPosition((Me.GdViewer1.GetHScrollBarPosition() - 20))
            Case 39
                Me.GdViewer1.SetHScrollBarPosition((Me.GdViewer1.GetHScrollBarPosition() + 20))
        End Select
    End Sub

Best regards,

Loïc Carrère

[RayB]

Hi Loïc,
Thanks for your speedy response. The code worked fine - thank you.
I have noticed another quirk - I have a pdf document that renders fine but some of the characters are displaced from their original positions such that two letters may overlap slightly making the document hard to read. My guess is that the viewer is substituting a font and not getting the position quite right. Is there a fix for this?

Kind Regards,
Ray.

[Loïc]

Hi,

Please, in future report any PDF rendering issue on this topic:

pdf-rendering-issues-t430.html

If you encounter problems in PDF rendering, send us your file at esupport (at) gdpicture (dot) com giving precision on the bad rendering behavior.

Best regards,

Loïc