Solved

Access main window class from External Function

Posted on 1998-11-13
2
198 Views
Last Modified: 2013-11-20
hi folks,

   Here is the question:

UINT ComputeThreadProc (LPVOID pParam) {

   // Codes of retrieving window Controls from Main Window

   return 0;
}

   Could anyone send me a sample codes of retrieving window controls (e.g. Edit, Listbox...etc) from the main window or dialog.

Many thanks.

stephen
0
Comment
Question by:stephenkong
[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
  • 2
2 Comments
 
LVL 6

Accepted Solution

by:
thresher_shark earned 50 total points
ID: 1324671
What I would do is:

1) As the pParam, send a pointer to a CWnd, or if necessary, a structure that contains a pointer to a CWnd.
2) This CWnd is a pointer to the main window or dialog.  In the thread function, you could then use the pointer to access all of the window's edit controls, list boxes, etc... using, for example, GetDlgItem (...);

Here is an example (like you requested):

// MainWindow contains a pointer to a CWnd
UINT ComputeThreadProc (LPVOID MainWindow)
{ CWnd *mainwnd = (CWnd *) MainWindow;

  // then you can do whatever you want with it, for example:
  mainwnd->GetDlgItem (IDC_EDIT_CONTROL1)->ShowWindow (SW_SHOW);

  return 0;
}

If you have any further questions, please feel free to ask.  Thanks!
0
 
LVL 6

Expert Comment

by:thresher_shark
ID: 1324672
Make sure you accept or reject answers at the questions you have asked so far.  It is important to not only ask questions, but also to follow through on them!
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
Introduction: The undo support, implementing a stack. Continuing from the eigth article about sudoku.   We need a mechanism to keep track of the digits entered so as to implement an undo mechanism.  This should be a ‘Last In First Out’ collec…
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.
Come and listen to Percona CEO Peter Zaitsev discuss what’s new in Percona open source software, including Percona Server for MySQL (https://www.percona.com/software/mysql-database/percona-server) and MongoDB (https://www.percona.com/software/mongo-…

696 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