Debenu Quick PDF Library - PDF SDK Community Forum : Blocking or Erasing Text http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 13 May 2026 02:12:41 +0000 Thu, 08 Jan 2015 14:56:36 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3044 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[Blocking or Erasing Text : Thanks so much.It looks promising,...]]> http://www.quickpdf.org/forum/blocking-or-erasing-text_topic3044_post12249.html#12249 Author: JohnTMD
Subject: 3044
Posted: 08 Jan 15 at 2:56PM

Thanks so much.
It looks promising, but, it appears that this method has complications and may not have been tested completely.

I'm going to see if I can simply place a white block over the text, effectively erasing it.

The question then becomes, what happens after each erasure and subsequently adding text.

I'm open for suggestions, but, will report back if I find a simple, workable solution.

I'm casting my vote for a new function, DeleteText(Horizontal,Vertical,Width,Height) or
DeleteText(Horizontal,Vertical,'Original Text').

John
]]> Thu, 08 Jan 2015 14:56:36 +0000 http://www.quickpdf.org/forum/blocking-or-erasing-text_topic3044_post12249.html#12249 <![CDATA[Blocking or Erasing Text : Did you look here:http://www.q...]]> http://www.quickpdf.org/forum/blocking-or-erasing-text_topic3044_post12248.html#12248 Author: mLipok
Subject: 3044
Posted: 08 Jan 15 at 1:13AM

Did you look here:
http://www.quickpdf.org/forum/add-text-content-and-remove-later_topic2991.html]]> Thu, 08 Jan 2015 01:13:39 +0000 http://www.quickpdf.org/forum/blocking-or-erasing-text_topic3044_post12248.html#12248 <![CDATA[Blocking or Erasing Text : After drawing text is there a...]]> http://www.quickpdf.org/forum/blocking-or-erasing-text_topic3044_post12244.html#12244 Author: JohnTMD
Subject: 3044
Posted: 07 Jan 15 at 3:05PM

After drawing text is there a reliable way to "erase" or otherwise block or blank the text?

Given:
DPL.SetTextColor(0,0,1); //Blue
DPL.DrawText(1,1, 'Test');

//text inserted

Later:
DPL.SetTextColor(1,1,1); //White?
DPL.DrawText(1,1, 'Test');

Result is a faint outline of text- not completely obscured.

Changing the text transparency setting does not influence text
already inserted.

Any ideas?

TIA,

John


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