Message Map Problem [modified] - C / C++ / MFC Discussion Boards

chandu0046-Nov-07 1:50

6-Nov-07 1:50

donot get confused.
do as nelek has suggested using a CFileDialog. i had been using it since years.
see the example here.

CFileDialog dlg(true,NULL,_T("*.*"),OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"textfiles(*.*)|*.*|*.*");<br />
dlg.m_ofn.lpstrTitle="select the required file";<br />
if(dlg.DoModal()!=IDCANCEL)<br />
{<br />
CString filename=dlg.GetPathName();<br />
}<br />
else<br />
return;

--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.

Re: Browse the file and read it.

CodingLover6-Nov-07 18:34

CodingLover

6-Nov-07 18:34

Can you explain this little more.

I want to get the path through a control. I mean through a text box. How it happened here. Smile | :)

====================================

Cheers, I've done it pal. Bind your code with a button click event and the CString set in to a edit control. How nice. It works.

Cheers again

Laugh | :laugh:

I appreciate your help all the time...
Eranga Smile | :)

Re: Browse the file and read it.

Nelek6-Nov-07 21:01

Nelek

6-Nov-07 21:01

See http://msdn2.microsoft.com/en-us/library/dk77e5e7(vs.71).aspx[^]

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Re: Browse the file and read it.

CodingLover6-Nov-07 21:40

CodingLover

6-Nov-07 21:40

Thanks pal. I've read it well and do my work well. I have another question regarding MFC control editing. I'll start a new thread.

Thanks again.

I appreciate your help all the time...
Eranga Smile | :)

Re: Browse the file and read it.

Nelek5-Nov-07 23:52

Nelek

5-Nov-07 23:52

Look at your docu and read about CFileDialog

One example with my personal use in my project, it gives something like save as... asking to overwrite if the file already exists:

CFileDialog newFileDlg (TRUE, "*.ext", NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, "Searched File (*.ext) | *.ext|", NULL);

Then you can use functions like newDlg.GetFileName (), GetFilePath ()... and others, that will help you to create the archive with CFile or CArchive

Re: Browse the file and read it.

CodingLover6-Nov-07 0:46

CodingLover

6-Nov-07 0:46

I found this and refer, but lots of coding going there. I'm really confusing. Someone can give a brief explanation how to refer it.

I appreciate your help all the time...
Eranga Smile | :)

Re: Browse the file and read it.

Nelek6-Nov-07 1:52

Nelek

6-Nov-07 1:52

Are you reading the answers we give you?

Message Map Problem [modified]

minihotto5-Nov-07 22:39

minihotto

5-Nov-07 22:39

Hello,
I create a "Windows Form Application" project that names p2pport, in Microsoft visual .NET 2005.
I want to use the Message Map. I see it on MSDN. MFC uses it.
So I include the #include <afxwin.h>, and use MFC in a shared DLL.
This is my code.

BEGIN_MESSAGE_MAP(p2pport::Dlg,public System::Windows::Forms::Form)
ON_MESSAGE(WM_UI1, p2pport::Dlg::OnUI1, WPARAM wParam, LPARAM lParam)
ON_MESSAGE(WM_UI2, p2pport::Dlg::OnUI2, WPARAM wParam, LPARAM lParam)
ON_MESSAGE(MM_MIXM_LINE_CHANGE,p2pport::Dlg::onMixerCallBack)
ON_MESSAGE(MM_MIXM_CONTROL_CHANGE,p2pport::Dlg::onMixerCallBack)
END_MESSAGE_MAP()

p2pport is my project name, and Dlg is the name of my form file.
But I get a lots of errors.

error C2039: 'GetMessageMap' : is not a member of 'p2pport::Dlg'
error C2039: 'GetThisMessageMap' : is not a member of 'p2pport::Dlg'
error C2039: 'GetThisMessageMap' : is not a member of 'System::Int32'
error C2270: 'GetMessageMap' : modifiers not allowed on nonmember functions
error C2365: 'GetThisMessageMap' : redefinition; previous definition was 'formerly unknown identifier'
error C2440: 'static_cast' : cannot convert from 'void (__clrcall p2pport::Dlg::* )(WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
error C2440: 'static_cast' : cannot convert from 'void (__clrcall p2pport::Dlg::* )(WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
error C2440: 'static_cast' : cannot convert from 'void (__clrcall p2pport::Dlg::* )(WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
error C2440: 'static_cast' : cannot convert from 'void (__clrcall p2pport::Dlg::* )(WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
error C3861: 'GetThisMessageMap': identifier not found
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
I google it, but nothing finds.

Can anybody help me to solve it?
Appreciate for ur reply. Thx.

-- modified at 5:03 Tuesday 6th November, 2007

Re: Message Map Problem

baerten5-Nov-07 23:35

baerten

5-Nov-07 23:35

Own created messages will be handled this way in >>MFC<<:

In header:
class MyView
{
...
LRESULT OnMyMessage(WPARAM w=0,LPARAM l=0);
...
};

in .cpp:
BEGIN_MESSAGEMAP(MyView,CFormView)
ON_MESSAGE(WM_MY_OWN_MESSAGE,OnMyMessage)
END_MESSAGE_MAP()

LRESULT MyView::OnMyMessage(WPARAM w,LPARAM l)
{
// Work
return TRUE;
}

I hope this helps you Smile | :)

Re: Message Map Problem

minihotto6-Nov-07 1:24

minihotto

6-Nov-07 1:24

Thx for your reply.
It helps me a lot.
But I still get some errors.

I create a header file that named CMyView and the content is following.

#ifndef CMYVIEW_H<br />
#define CMYVIEW_H<br />
#include <afxwin.h><br />
#include <afxext.h><br />
	public class CMyView : public CFormView<br />
	{<br />
		LRESULT OnUI1(WPARAM wParam, LPARAM lParam);<br />
		LRESULT OnUI2(WPARAM wParam, LPARAM lParam);<br />
		LRESULT onMixerCallBack(WPARAM wParam, LPARAM lParam);<br />
<br />
	};<br />
#endif

And my code is modified as below.

BEGIN_MESSAGE_MAP(CMyView,CFormView)<br />
	ON_MESSAGE(WM_UI1, OnUI1)<br />
	ON_MESSAGE(WM_UI2, OnUI2)<br />
	ON_MESSAGE(MM_MIXM_LINE_CHANGE,onMixerCallBack)<br />
	ON_MESSAGE(MM_MIXM_CONTROL_CHANGE,onMixerCallBack)<br />
END_MESSAGE_MAP()

And there's the error.

error C2509: 'GetMessageMap' : member function not declared in 'CMyView'
error C2509: 'GetThisMessageMap' : member function not declared in 'CMyView'

How could I solve this problem?
Appreciate for ur reply.
Thx.

Re: Message Map Problem

minihotto6-Nov-07 1:42

minihotto

6-Nov-07 1:42

I got it.
I lose DECLARE_MESSAGE_MAP()in the header file.

The correct code is as below.

#ifndef CMYVIEW_H<br />
#define CMYVIEW_H<br />
<br />
#include <afxwin.h><br />
#include <afxext.h><br />
<br />
	public class CMyView : public CFormView<br />
	{<br />
<br />
	public:<br />
		afx_msg LRESULT OnUI1(WPARAM wParam, LPARAM lParam);<br />
		LRESULT OnUI2(WPARAM wParam, LPARAM lParam);<br />
		LRESULT onMixerCallBack(WPARAM wParam, LPARAM lParam);<br />
	protected:<br />
		DECLARE_MESSAGE_MAP();<br />
<br />
	};<br />
<br />
#endif

Re: Message Map Problem

baerten6-Nov-07 1:59

baerten

6-Nov-07 1:59

Outstanding Smile | :)

Great that it works for you Smile | :)

protect from print-screen

vikramlinux5-Nov-07 22:29

vikramlinux

5-Nov-07 22:29

Hi All,
I have a notepad like application. I want to avoid from taking snapshots of my application using printscreen like facility. Is there any way?

Re: protect from print-screen

baerten5-Nov-07 22:37

baerten

5-Nov-07 22:37

I don't know the correct answer,

but i don't think so, because the PrintScreen-Key will be handled in each way in windows itselfs,
so you can't suppress this key in your app and windows never remarks it.
Because you can "steal" any picture in a browser which is protected via different methods over
the printscreen...
If the disabling of the PrintScreen-Key works, all browsers would use this method to protect
the pics into the browser

But propably there is a specific technique to do that, but i never heared about it.

Good luck

Re: protect from print-screen

Nelek5-Nov-07 23:23

Nelek

5-Nov-07 23:23

Im not sure about, but I think that hooking the message of "print screen" and doing nothing / something different while the application is active could work. But its pretty hard work.

Re: protect from print-screen

baerten5-Nov-07 23:37

baerten

5-Nov-07 23:37

Injecting a hook into windows? ouch OMG | :OMG:

I never want to try this LOL, that's to hard for me Big Grin | :-D

I even don't know in which DLL to hook in D'Oh! | :doh:

But it's a solution, right Smile | :)

Re: protect from print-screen

Nelek6-Nov-07 1:53

Nelek

6-Nov-07 1:53

Neither do I, but it doesn't mean that is impossible Cool | :cool:

How to connect to database in MFC?

TooShy2Talk5-Nov-07 21:15

TooShy2Talk

5-Nov-07 21:15

Hi,

Hope somebody can help me.

I want to access database in my program but I don't know how to make a connection. I'm using MySQL and VC++ 2003 MFC.

If you have an idea or a link related please let me know.
It would be a big help.
Thank you.

Re: How to connect to database in MFC?

Hamid_RT5-Nov-07 21:26

Hamid_RT

5-Nov-07 21:26

Did you see Database section on the codeproject ?

Re: How to connect to database in MFC?

TooShy2Talk5-Nov-07 22:05

TooShy2Talk

5-Nov-07 22:05

No, not yet.

Re: How to connect to database in MFC?

cx_jin5-Nov-07 22:09

cx_jin

5-Nov-07 22:09

#include "mysql.h"
#include "winsock.h"

#pragma comment(lib,"libmySQL.lib")

MYSQL mysql;

mysql_init (&mysql);

if(!mysql_real_connect(&mysql,"localhost","root",NULL,"mydb",3306,NULL,0))
{
AfxMessageBox("database connection error");
return FALSE;
}

Re: How to connect to database in MFC?

cx_jin7-Nov-07 15:18

cx_jin

7-Nov-07 15:18

http://dev.mysql.com/tech-resources/articles/embedding-mysql-server.html

http://dev.mysql.com/downloads/mysql/5.0.html#source[^]

help me

SnaKeBeD5-Nov-07 21:06

SnaKeBeD

5-Nov-07 21:06

i created an application in Mfc Dialog and i want to increase the dialog size as per the screen size programatically so that the controls in the dialog does not change its positions.

Thanks in Advance

||SnAkeBed||

Re: help me

Hamid_RT5-Nov-07 21:08

Hamid_RT

5-Nov-07 21:08

You can use of MoceWindow on the WM_SIZE.

Re: help me

Nelek5-Nov-07 21:16

Nelek

5-Nov-07 21:16

Actually is MoveWindow :P (I know, typing error, but better to be sure the people gets the correct answer Roll eyes | :rolleyes:

)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.