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Porting C to MFC

Posted on 1998-11-23
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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?

Example
#define MY_MESSAGE (WM_USER + 1)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
      //{{AFX_MSG_MAP(CMainFrame)
      ON_WM_CREATE()
      ON_MESSAGE(MY_MESSAGE, OnMyMessage)
      //}}AFX_MSG_MAP
END_MESSAGE_MAP()

CMainFrame::OnMyMessage()
{
  if (wParam==ONE_PARAMETER)
  {...}
  else
  {...}
}

Any help will be very much appreciated!!
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Question by:tangkh
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2 Comments
 
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Accepted Solution

by:
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);
0
 

Author Comment

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