C++ RSS C++ RSS

Converting parameters in MFC "Error C2440"

Please support our C++ advertiser: Intel Parallel Studio Home
Reply

•
•
Join Date: Oct 2007
Posts: 30
Reputation: Fouly is an unknown quantity at this point 
Solved Threads: 0
Fouly Fouly is offline Offline
Light Poster

Converting parameters in MFC "Error C2440"

 
0
  #1
Apr 17th, 2009
Hi,

I tried the following snippet of code

C++ Syntax (Toggle Plain Text) 
  1. BEGIN_MESSAGE_MAP(CSpeechDlg, CDialog)
  2. 	//{{AFX_MSG_MAP(CSpeechDlg)
  3. 	ON_WM_SYSCOMMAND()
  4. 	ON_WM_PAINT()
  5. 	ON_WM_QUERYDRAGICON()
  6. 	ON_BN_CLICKED(IDC_BUTTON_VOICE_TRAINING, OnButtonVoiceTraining)
  7. 	ON_BN_CLICKED(IDC_BUTTON_MICRO_SETUP, OnButtonMicroSetup)
  8. 	ON_BN_CLICKED(IDC_BUTTON_SPEAK, OnButtonSpeak)
  9. 	ON_BN_CLICKED(IDC_BUTTON_ABOUT, OnButtonAbout)
  10. 	//}}AFX_MSG_MAP
  11. 	ON_MESSAGE(WM_RECOEVENT,OnRecoEvent)
  12. END_MESSAGE_MAP()

but i got an error at this line:
C++ Syntax (Toggle Plain Text) 
  1. ON_MESSAGE(WM_RECOEVENT,OnRecoEvent)
the error is :
C++ Syntax (Toggle Plain Text) 
  1. Error	1	error C2440: 'static_cast' : cannot convert from 'void (__thiscall CSpeechDlg::* )(void)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
here's the definitions for the passing parameters:
C++ Syntax (Toggle Plain Text) 
  1. #define WM_RECOEVENT    WM_USER+5
OnRecoEvent is a void function...
Reply With Quote Quick reply to this message  
•
•
Join Date: Mar 2009
Posts: 142
Reputation: MrSpigot is on a distinguished road 
Solved Threads: 34
MrSpigot's Avatar
MrSpigot MrSpigot is offline Offline
Junior Poster

Re: Converting parameters in MFC "Error C2440"

 
0
  #2
Apr 20th, 2009
You haven't shown the signature for OnRecoEvent(), but it should be like this:-
Declare the function in CSpeechDlg as:
afx_msg LRESULT OnRecoEvent(WPARAM wp, LPARAM lp);

and define it as:
LRESULT CSpeechDlg::OnRecoEvent(WPARAM wp, LPARAM lp)
{
return 0; // or 1
}
Reply With Quote Quick reply to this message  
•
•
Join Date: Oct 2007
Posts: 30
Reputation: Fouly is an unknown quantity at this point 
Solved Threads: 0
Fouly Fouly is offline Offline
Light Poster

Re: Converting parameters in MFC "Error C2440"

 
0
  #3
Apr 20th, 2009
well the building error is solved but i got a run time error!!!

here's the error:
C++ Syntax (Toggle Plain Text) 
  1. Runtime Error!
  2.  
  3. R6034
  4. An application has made an attempt to load C runtime library incorrectly.
Reply With Quote Quick reply to this message  
•
•
Join Date: Mar 2009
Posts: 142
Reputation: MrSpigot is on a distinguished road 
Solved Threads: 34
MrSpigot's Avatar
MrSpigot MrSpigot is offline Offline
Junior Poster

Re: Converting parameters in MFC "Error C2440"

 
0
  #4
Apr 20th, 2009
•
•
•
•
Originally Posted by Fouly View Post
well the building error is solved but i got a run time error!!!

here's the error:
C++ Syntax (Toggle Plain Text) 
  1. Runtime Error!
  2.  
  3. R6034
  4. An application has made an attempt to load C runtime library incorrectly.
Check out this error in MSDN R6034
Reply With Quote Quick reply to this message  
•
•
Join Date: Oct 2007
Posts: 30
Reputation: Fouly is an unknown quantity at this point 
Solved Threads: 0
Fouly Fouly is offline Offline
Light Poster

Re: Converting parameters in MFC "Error C2440"

 
0
  #5
Apr 20th, 2009
I set the generation of the mainfest file property to yes but i got the same error!!!
check this
Reply With Quote Quick reply to this message  
Reply

Quick Reply to Thread
This thread is more than three months old.
Perhaps start a new thread instead?
•
•
•
•
•
•
•
•
Message:
•
•
•
•



Other Threads in the C++ Forum
Thread Tools Search this Thread



api array arrays based beginner binary c++ c/c++ calculator char char* class classes code compile compiler console conversion count delete deploy desktop directshow dll download dynamic dynamiccharacterarray encryption error file forms fstream function functions game givemetehcodez google graph gui homeworkhelp homeworkhelper iamthwee ifstream input int integer java lib linkedlist linker linux list loop looping loops map math matrix memory news number numbertoword output parameter pointer problem program programming project python random read recursion recursive reference return rpg sorting string strings struct temperature template templates test text text-file tree unix url variable vector video visual visualstudio win32 windows winsock wordfrequency wxwidgets
About Us | Contact Us | Advertise | DaniWeb | Acceptable Use Policy | RSS Feed

©2003 - 2009 DaniWeb® LLC