C / C++ / MFC Discussion Boards

Tom Wright23-Jun-03 11:34

23-Jun-03 11:34

Thanks dave that did it. Can you explain in english what the line:

char* pszAgency = new char[sTmp.GetLength()+1];

does? Is it redefining a char array?

Thanks
Tom

Tom Wright
tawright915@yahoo.com

Re: Problems with drop down box

Dave Bryant23-Jun-03 11:38

Dave Bryant

23-Jun-03 11:38

The new operator allocates a block of memory, which is an array of chars, of length sTemp.GetLength()+1. The +1 is needed because in C/C++, strings are null-terminated, and the length of a string does not include the null-terminator.

char* pszAgency defines a pointer to a character, which in this case is the start of the block of memory we have just allocated.

Dave
http://www.cloudsofheaven.org

Re: Problems with drop down box

Tom Wright23-Jun-03 11:54

Tom Wright

23-Jun-03 11:54

Again thanks for the help. That explained it clearly.
Tom

Tom Wright
tawright915@yahoo.com

Re: Problems with drop down box

basementman23-Jun-03 16:26

basementman

23-Jun-03 16:26

wouldn't be a little more efficient to just send the CB_GETTEXT message, passing the LPSTR to be filled in directly, rather than creating a CString, having the framework do what I just said, and converting it to an LPSTR? Also, I think that the other message would be CB_GETTEXTLEN?

onwards and upwards...

Re: Problems with drop down box

Dave Bryant23-Jun-03 16:31

Dave Bryant

23-Jun-03 16:31

It would be more efficient, but probably not worth the effort, here as it is to be used in a cobol DLL. Since the text is to be retrieved from a combo box, it is unlikely to be very long either, so the little execution time saved is probably not very relevant here.

Dave
http://www.cloudsofheaven.org

MAPI

act_x23-Jun-03 10:07

act_x

23-Jun-03 10:07

While using simple MAPI in VC++ , how should I be specifying the Mail server addresses ?

Re: MAPI

David Crow23-Jun-03 10:24

David Crow

23-Jun-03 10:24

Either by host name or IP address. If you use host name and it doesn't work, it could indicate a DNS problem.

MFC & ATL + Netware problem

Brian Shifrin23-Jun-03 9:56

Brian Shifrin

23-Jun-03 9:56

I have script host embeded inside my MFC & ATL app.

It mostly reads/executes JScript code sending results back to MFC View to be displayed.

Program runs very fast when started from local drive, also I can place all scripts on shared netware volume and it will still take less then 1sec to display interface.

Trouble comes when executable is placed on netware volume. It takes 25sec to display first screen vs << 1sec local. After that everything runs fast again.

Profile lists
CWinThread::PumpMessage 27.9 seconds
AfxWinMain 31.8 seconds
IsLink 4.5 seconds
CMDIFrame::DefWindowProcA 3.5second

Not entirely unexpected as looks like system is waiting....

Numega TrueTime even more dramatic:
Application time: 0.29%
System Time : 99.71%

System Time: WaitForMultipleObjectsEx 99%
This function has been called by LoadRegTypeLib 90%
and GetFileAttribEx - 5%....

Those function called 100% by SetScriptState(SCRIPTSTATE_CONNECTED);

Have anybody seen such behaviour????

Any1 aware of any issues btw Netware and MFC & ATL?

P.S. I tried to SetCurrentDirectory to temp and it had no imact...
Compress executable with UPX... UPX unpacks file inside env "C:\TEMP" still darn 25seconds plus to start....

Any suggestions....

Thanks
Brian

Do you know HLP95EN.DLL

algruber23-Jun-03 9:51

algruber

23-Jun-03 9:51

I have a Winhelp file that calls a Microsoft DLL named HLP95EN.DLL
RR("HLP95EN.DLL","MsoCF","I=SII")

Here's what I know about this:
1. RR() is used to register a routine, which can then be used as a macro by Winhelp
2. the routine's name is "MsoCF"
3. the "I=SII" lists the routine's parameter types: LPSTR, int, int

Here's what I don't know:
1. what does this routine do?
2. in general, is there a way to get the contents of a Microsoft routine?
3. what does the "I= mean?
4. I understand that LPSTR specifies a pointer to a string, but since a Winhelp file is not a C program, I can't see how to assign a pointer to a string.
Could I send an actual string, eg: MsoCF("banana",1,2)?

I appreciate your help,
Al

Modeless MFC dialog problem in Winamp plugin dll

Member 34159623-Jun-03 9:23

Member 341596

23-Jun-03 9:23

I'm developping a Winamp visual plugin. I use MFC.

I have a CWinApp derived class (instance is myApp), that has for members init, config, render and quit that are mapped to exported c functions (that Winamp retrieves).

I create a dialog box, instance of a CDialog derived class. I call Create to launch it modelessly. When I close it by the x close button (IDCANCEL) it closes. I can stop the plugin. When i stop Winamp it crashes. When I call DestroyWindow from myApp it crashes.

I tried several solutions : with or without delete in PostNcDestroy, with or without delete from myApp, in a CWinThread derived class, with DestroyWindow in OnCancel or not, and other parameters. There are always problems, depending of those parameters. Most of the time Winamp crashes when the dialog is closed, sometimes some way of closing it works.

Can someone explain how to implement such a CDialog derived class, and how to use it in a modeless way (with a pointer, new, delete and functions such as CreateMyDialog, ShowMyDialog, HideMyDialog, DestroyMyDialog) ?

Modifying WM_COMMAND to another app

Fahr23-Jun-03 8:08

Fahr

23-Jun-03 8:08

Hello people,

I am trying to catch the WM_COMMAND message of a certain button in an external application. Catching works fine with both WH_CALLWNDPROC and WH_CALLWNDPROCRET hooks. But after the catch I want to WM_NULL it, so the app wont actually execute the function that the button calls.
After some browsing through the MSDN, it seems like the WH_GETMESSAGE hook is the only one that can actually modify messages. However, changing my WH_CALLWNDPROC hook to a WH_GETMESSAGE hook resulted in nothing. It seems as if WM_COMMAND never gets processed by WH_GETMESSAGE.
It may be that WH_GETMESSAGE is the wrong hook to catch WM_COMMAND, but then how SHOULD I do it? WH_CALLWNDPROC can't modify the message, only inspect it...

Thanks,
- Fahr

Focus notification

Atlence23-Jun-03 8:06

Atlence

23-Jun-03 8:06

I'm using the CHtmlEditCtrl class which encapsulates HTML editing function. I would like to be notified when the control gains the focus, so that I could enable some commands.
I've created a devired class, but my new class doesn't get the focus notification!

Here is the declaration of my class:

<br />
#pragma once<br />
#include "afxhtml.h"<br />
<br />
<br />
class CMyHtmlEditCtrl :	public CHtmlEditCtrl<br />
{<br />
	DECLARE_DYNCREATE(CMyHtmlEditCtrl)<br />
	DECLARE_MESSAGE_MAP()<br />
public:<br />
	CMyHtmlEditCtrl(void);<br />
	virtual ~CMyHtmlEditCtrl(void);<br />
	afx_msg void OnSetFocus(CWnd* pOldWnd);<br />
};<br />

and the implemantation file (.CPP):

<br />
#include "StdAfx.h"<br />
#include ".\myhtmleditctrl.h"<br />
<br />
IMPLEMENT_DYNCREATE(CMyHtmlEditCtrl, CHtmlEditCtrl)<br />
<br />
CMyHtmlEditCtrl::CMyHtmlEditCtrl(void)<br />
{<br />
}<br />
<br />
CMyHtmlEditCtrl::~CMyHtmlEditCtrl(void)<br />
{<br />
}<br />
BEGIN_MESSAGE_MAP(CMyHtmlEditCtrl, CHtmlEditCtrl)<br />
	ON_WM_SETFOCUS()<br />
END_MESSAGE_MAP()<br />
<br />
void CMyHtmlEditCtrl::OnSetFocus(CWnd* pOldWnd)<br />
{<br />
	AfxMessageBox ("Got Focus!");<br />
	CHtmlEditCtrl::OnSetFocus(pOldWnd);<br />
}<br />

What is going wrong?

Thks in advance!
Appstmd
http://www.appstmd.com

Re: Focus notification

Neville Franks23-Jun-03 11:35

Neville Franks

23-Jun-03 11:35

Have you checked with Spy++ that WM_SETFOCUS is actually being sent to the control?

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: Focus notification

Atlence23-Jun-03 21:07

Atlence

23-Jun-03 21:07

Spy++ says that the control receive WM_SETFOCUS.

Thks in advance!
Appstmd
http://www.appstmd.com

Re: Focus notification

Neville Franks23-Jun-03 23:26

Neville Franks

23-Jun-03 23:26

The MSHTML control may be preventing it from being passed on. You could try putting a PreTranslateMessage() into your derived view and/or MainFrm.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: Focus notification

Atlence24-Jun-03 0:45

Atlence

24-Jun-03 0:45

Thks for your answer. Even in the PreTranslateMessage, I can't receive the WM_SETFOCUS message! Where is the pb?

<br />
BOOL CMyHtmlEditCtrl::PreTranslateMessage(MSG* pMsg)<br />
{<br />
     if (pMsg->message==WM_SETFOCUS)<br />
          AfxMessageBox ("Focus!");<br />
<br />
	return CHtmlEditCtrl::PreTranslateMessage(pMsg);<br />
}

Thks in advance!
Appstmd
http://www.appstmd.com

Re: Focus notification

Neville Franks24-Jun-03 12:07

Neville Franks

24-Jun-03 12:07

Try WM_ACTIVATE. Failing that see what messages you do get when it gets focus. Also try PreTranslateMessage() in you mainframe class.

See: http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/editing/mshtmleditor.asp[^]

And Search MSDN for help. Also a very good source ar articles on MSHTML is here: http://www.beginthread.com/Topic/MSVC[^]

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: Focus notification

Atlence26-Jun-03 3:55

Atlence

26-Jun-03 3:55

Thks for your help!
I will explore the web sites you give me.

When the control gets focus, I see that it receives the 0x0118 message, but I don't have further information about this message. I will use it instead of WM_SETFOCUS.

Appstmd
http://www.appstmd.com

Re: Focus notification

Neville Franks26-Jun-03 21:32

Neville Franks

26-Jun-03 21:32

Appstmd wrote:
I see that it receives the 0x0118 message

This appears to be undocumented so using it is not wise.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

CFileDialog change directory?

electronicman_x23-Jun-03 7:26

electronicman_x

23-Jun-03 7:26

This is for an MDI program (mfc) with visual c++ 6.0

Probably a pretty easy question:

I am using CFileDialog for open/save as file operations. I want to be able to create an instance of the dialog, change the working directory in code at runtime, and then domodal() having the dialog show the directory i specified as the current directory. I'm able to get the directory names i want to use in the format CString (i.e. "c:\project\dbc") and i want to use this path/directory string to change the directory but i can't seem to figure out how to do it.

Jeff Rothenberg

Project Engineer
Vector CANtech, Inc.

Re: CFileDialog change directory?

basementman23-Jun-03 7:39

basementman

23-Jun-03 7:39

You need to set the lpstrInitialDir member of the OPENFILENAME member struct (m_ofn) in the CFileDialog class. See the doc for more info.

onwards and upwards...

Re: CFileDialog change directory?

electronicman_x23-Jun-03 7:52

electronicman_x

23-Jun-03 7:52

Thanks, that works great. I must have missed that m_ofn data item.

Jeff Rothenberg

Project Engineer
Vector CANtech, Inc.

AOL Messenger

Saquib Razak23-Jun-03 6:50

Saquib Razak

23-Jun-03 6:50

I am trying to get the text out of an AOL Messenger Chat session. AIM has an Internet Explorer Server, but after I get a handle for it and try to read the text, I come up with an empty string.
Here are the steps that I am doing
I get a reference to a IHTMLDocument2 interface
from that I get a pointer to IHTMLElement interface by calling the get_body function from the IHTMLDocument2 interface.
Then I call the following functions out of desperation on the IHTMLElement Inface

get_innerHTML returns blank
get_innerText return blank
get_outerText return blank
get_outerHTML returns "<BODY><XMP></XMP></BODY>"

I tried the same thing with Yahoo Messenger and it worked perfectly.

Any suggestions

Thanks
Saquib

Re: AOL Messenger

Atlence23-Jun-03 8:14

Atlence

23-Jun-03 8:14

Try the GetDocumentHTML method which returns the entire HTML code.

Thks in advance!
Appstmd
http://www.appstmd.com

Re: AOL Messenger

Saquib Razak23-Jun-03 10:10

Saquib Razak

23-Jun-03 10:10

I just realized that the text window in AIM is Ate32Class.Any ideas on how can I get the text from this window?

Thanks
Saquib

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