Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

How to redirect "printf( )" to a window in Visual C++?

Posted on 1998-04-04
6
Medium Priority
?
259 Views
Last Modified: 2008-02-01
Dear experts:

I am now doing a course project using Visual C++. I am trying to transplant an existing UNIX Ansi C program to
Windows 95 platform. In this C program, there are many "printf()" functions to print out some information to the screen. I would like to convert these outputs to a window ( a ScrollView ) rather than DOS mode screen. May you tell me a proper way of doing that using Visual C++? Thanks.

-jzzhang
0
Comment
Question by:jzzhang
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 11

Accepted Solution

by:
alexo earned 60 total points
ID: 1184058
Easiest solusion: create a read-only editbox with scrollbars.  For each string you want to write to it, set the selection (EM_SETSEL) to [0x7FFF-0x7FFF] and replace the selection (EM_REPLACESEL) with the string.  Don't forget "\r\n" at the end of lines.

Don't you thing 10 points is kinda, err..., cheap?

0
 
LVL 2

Author Comment

by:jzzhang
ID: 1184059
Alexo:

Thank you for your answer. It works fine using your method. However, the output in a CEdit control is reverse. That is the last line of string always displays at the top. The first line of string goes to the bottom. Can you provide me a solution to display all these lines of strings in the right order? Thanks.

Jzzhang
0
 
LVL 2

Author Comment

by:jzzhang
ID: 1184060
Alexo:

Can you tell me what means to set the selection (EM_SETSEL) to [0x7FFF-0x7FFF]? What is the meaning of this number?

Jzzhang
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 11

Expert Comment

by:alexo
ID: 1184061
The number is what will make the CEdit box act normal.
It will select the area *after* your last line so replacing the selection will add the line.
Use: SetSel(0x7FFF, 0x7FFF)

0
 
LVL 2

Author Comment

by:jzzhang
ID: 1184062
Alexo:

Your method is great! I would like to give you 200 points. But how?

0
 
LVL 11

Expert Comment

by:alexo
ID: 1184063
Thanx.  I appreciate it!
You can post a dummy 200-point question titled "for alexo only".  Just let me know in what area.

0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

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

Introduction This article is a continuation of the C/C++ Visual Studio Express debugger series. Part 1 provided a quick start guide in using the debugger. Part 2 focused on additional topics in breakpoints. As your assignments become a little more …
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

722 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