?
Solved

drawing a line works in CView, but not in CScrollView, why?

Posted on 1998-11-15
1
Medium Priority
?
282 Views
Last Modified: 2013-11-20
While trying something out, I wrote a small program that drew a line from one point to another point, using CView's OnDraw fn.  The code was basically this:

pDC->SelectStockObject(BLACK_PEN);
pDC->MoveTo(10, 10);
pDC->LineTo(100, 100);


This worked, and drew a diagonal line with no problem.
When I then tried to do the same thing, but using a CScrollView, I couldn't get it to do anything.

Any help?
Charles
0
Comment
Question by:lock5000
1 Comment
 
LVL 2

Accepted Solution

by:
wyy_cq earned 100 total points
ID: 1324743
CScrollView
you need to call PrepareDC(CDC* ) before using the DC.
but you need call this function in the OnDraw(...).

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
this video summaries big data hadoop online training demo (http://onlineitguru.com/big-data-hadoop-online-training-placement.html) , and covers basics in big data hadoop .
Suggested Courses

864 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question