Porting C to MFC

Posted on 1998-11-23
Medium Priority
Last Modified: 2013-11-20
I am porting my C to MFC, now I face a problem, i.e. retrieving the wParam and lParam. In C, I have a standard Windows Procedure passing parameters of Message, wParam, and lParam. I can then make use of these wParam and lParam.

In MFC, I use MESSAGE_MAP to map my private message (not Standard Windows' message). Here, how can I retrieve the wParam and lParam parameters that passed to my private message?

#define MY_MESSAGE (WM_USER + 1)


  if (wParam==ONE_PARAMETER)

Any help will be very much appreciated!!
Question by:tangkh
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

Accepted Solution

prasanth earned 200 total points
ID: 1325174
Your CMainFrame::OnMyMessage should actually be CMainFrame::OnMyMessage(WPARAM wParam, LPARAM lParam)...

Map Entry
ON_MESSAGE( <message>, <memberFxn> )

Function Prototype
afx_msg LRESULT memberFxn(WPARAM, LPARAM);

Author Comment

ID: 1325175
Thanks for your quick and effective answer :)

Featured Post

Introducing Priority Question

Increase expert visibility of your issues by participating in Priority Question, our latest feature for Premium and Team Account holders. Adjust the priority of your question to get emergent issues in front of subject-matter experts for help when you need it most.

Question has a verified solution.

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

Here is how to use MFC's automatic Radio Button handling in your dialog boxes and forms.  Beginner programmers usually start with a OnClick handler for each radio button and that's just not the right way to go.  MFC has a very cool system for handli…
Introduction: Finishing the grid – keyboard support for arrow keys to manoeuvre, entering the numbers.  The PreTranslateMessage function is to be used to intercept and respond to keyboard events. Continuing from the fourth article about sudoku. …
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.
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

743 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