Turn annotations on and off

[rgoodson40]

Hello,

Once you have called the method "AddRectangleHighlighterAnnotInteractive", is it possible to turn this off in code? I want to have a toggle highlight button so if the user turns it off, the highlight functionality will not be active. Currently it only turns off after a highlight has been drawn.

Also, after the highlight has been drawn, the highlight turns off. Is it possible to make this persistent, so that the user can continue to draw highlights on the page without having to go back and click the highlight button again after each time they highlight an area?

Thank you,
Reagan

[Loïc]

Hello,

Once you have called the method "AddRectangleHighlighterAnnotInteractive", is it possible to turn this off in code?

Yes it is. See: CancelLastAnnotInteractiveAdd() method.

Also, after the highlight has been drawn, the highlight turns off. Is it possible to make this persistent, so that the user can continue to draw highlights on the page without having to go back and click the highlight button again after each time they highlight an area?

Yes, just catch the mouseUp event, and then start a new annotation in it.

Let me know if I am not clear enough.

Kind regards,

Loïc

[rgoodson40]

Thanks Loic. The first answer works great. The second is not working.

If I call GdViewer1.AddRectangleHighlighterAnnotInteractive(Color.Red) in the mouse up event after a highlight has been drawn, the highlight disappears and it still doesn't give me the ability to draw another highlight. I also tried capturing the AnnotationAddedByUser event.

Any ideas as to why this isn't working?

[Loïc]

Hello again,

Are you using latest version ? / https://www.gdpicture.com/download/downl ... urenet.php

This code works like a charm for me:

Code: Select all

Private Sub GdViewer1_AnnotationAddedByUser(ByVal AnnotationIdx As Integer) Handles GdViewer1.AnnotationAddedByUser
      GdViewer1.AddRectangleHighlighterAnnotInteractive(Color.Red)
End Sub

Kind regards,

Loïc

[rgoodson40]

works great now. not sure what was different, but its working now.

Thanks.

[Loïc]

OK perfect! Thank you for the return.

Cheers,

Loïc