C / C++ / MFC

Re: Where to place code to be ran immediately after all mfc contruction is completed.

21-Sep-05 9:38

I'm messing with the status bar of my MFC SDI app to change the message from 'ready' to 'working' while doing a lengthy computation using the setup linked below. I've got everything working except that intially there is no value for the default status text. I've tried calling StatusBarMessage() from the constructor and OnCreate events, but in both cases it causes a null reference exception because the GUI components haven't been created yet. Where should I move the initialization call to.

http://www.codeguru.com/Cpp/controls/statusbar/article.php/c2973/#more

David Crow21-Sep-05 10:08

Re: Where to place code to be ran immediately after all mfc contruction is completed.

21-Sep-05 10:08

Which pane of the status bar are you attempting to change?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Dan Neely21-Sep-05 10:28

Re: Where to place code to be ran immediately after all mfc contruction is completed.

21-Sep-05 10:28

The left most that normally displays "Ready" or a description of the current menu/toolbar item.

I solved my problem by calling the init code in InitializeInstance. *duh*

Blake Miller22-Sep-05 4:18

Blake Miller

22-Sep-05 4:18

I also 'handled' WM_SETMESSAGESTRING in one of my MFC apps, and in that case I could set the message to anything I wanted, and also avoid messages I did not want to appear in the status bar that the framework might have posted automatically.
Oh, I also remember I did this because the message text was not in pane 0 of my staus bar, it was in the right-most pane instead of the left-most pane.

Newlines in my Edit Box

bugDanny21-Sep-05 9:29

bugDanny

21-Sep-05 9:29

I'm trying to make an edit box that will involve more complicated entry than just one line. In fact, sometimes I want to prefill my edit box from a file. I've already set the multiline property, and the 'want return' property, so it appears to be working properly when typing into it, but if I load in information from a file, the newline characters get changed into a funny vertical blackened box. How can I get the edit box to format them properly, turning the newline character into an actual newline?

Danny

David Crow21-Sep-05 9:34

21-Sep-05 9:34

bugDanny wrote:
How can I get the edit box to format them properly, turning the newline character into an actual newline?

Use \r\n instead.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

C^hris L^osinger21-Sep-05 9:36

C^hris L^osinger

21-Sep-05 9:36

replace all \n in the text with \r\n

Cleek | Image Toolkits | Thumbnail maker

bugDanny21-Sep-05 10:58

bugDanny

21-Sep-05 10:58

Thank you both. By the way, what does the \r mean?

Danny

Adding menu items to a mfc sdi app

C^hris L^osinger21-Sep-05 11:53

C^hris L^osinger

21-Sep-05 11:53

\r = carriage return

edit controls apparently refuse to honor new lines (\n) and require CR/LF pairs.

Cleek | Image Toolkits | Thumbnail maker

Dan Neely21-Sep-05 9:07

Re: Adding menu items to a mfc sdi app

21-Sep-05 9:07

I've added several items to my menus at designtime; thier Enabled properties are true, and their grayed properties are false; but at runtime they're grayed out and inactive. Is there something I need to do to activate them?

Dan Neely21-Sep-05 9:25

21-Sep-05 9:25

Problem fixed. I had my handlers set for ON_UPDATE_COMMAND_UI instead of ON_COMMAND. Been too long since I've done anything with mfc obviously.

Closing windows

Demian Panello21-Sep-05 8:35

Demian Panello

21-Sep-05 8:35

Hi.

How could I know when Windows is closing.
Because I have a program always loading and I want to trap the Window's closing, to show a message box.

Demian.

"I have always wished that my computer would be as easy to use as my
telephone. My wish has come true. I no longer know how to use my telephone."
-Bjarne Stroustrup, computer science professor, designer of C++
programming language (1950- )

-- modified at 14:35 Wednesday 21st September, 2005

Re: Closing windows

ddmcr21-Sep-05 8:58

ddmcr

21-Sep-05 8:58

You may override the WM_NCDESTROY message handler like this

void CyourDlg::OnNcDestroy()
{
	MessageBox("Dialog is going to be closed...");

	CDialog::OnNcDestroy();
	
}

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

-- modified at 15:02 Wednesday 21st September, 2005

Re: Closing windows

David Crow21-Sep-05 9:31

webbrowser & internet explorer

21-Sep-05 9:31

Demian Panello wrote:
How could I know when Windows is closing.

Look for the WM_QUERYENDSESSION or WM_ENDSESSION message.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Closing windows

ThatsAlok21-Sep-05 19:03

ThatsAlok

21-Sep-05 19:03

What about OnClose()

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

RaymondM21-Sep-05 7:27

RaymondM

21-Sep-05 7:27

I have the webbrowser in a program but want also to access the equivalent of this functionality:
internet explorer: Tools/internet options/general/fonts/language script

I expect it is not something exposed in the webbrowser, but otherwise.
Does anyone know how it can be done ?

Raymond Mercier

Raymond Mercier

DHTML Edit

jianxin080521-Sep-05 6:58

jianxin0805

21-Sep-05 6:58

hello
i find that there's little documention about DHTML Edit.who can tell me how to use it.
the event OnonkeyupDhtmledit().it doesn't tell me which key is pressed,i want to know which key is pressed.

thanks a lot
jianxin china

-- modified at 13:00 Wednesday 21st September, 2005

how to find dependencies

Eytukan21-Sep-05 6:51

Eytukan

21-Sep-05 6:51

how do i know the dlls held up by a specific application? for example, i'm developing an application using TSAPI, it's mainly using CSTA32.dll and ATTPRV32.dll,

i'm copying these two dlls in other computers' system32 folder , though i was able to solve the error "xx.DLL not found in this computer" i'm still not able to connect to the Telephony server.

i think its using some other dlls along with these two.. how to find those dlls?

thankx
V

i tried in "Bulid->start debug->go"

Eytukan21-Sep-05 6:55

Eytukan

21-Sep-05 6:55

i tried in "Bulid->start debug->go",
i got this list of dlls used by my program, do u find any dll that u guess its not in ur system?

Loaded 'ntdll.dll',
kernel32.dll',
Csta32.dll',
wsock32.dll',
ws2_32.dll',
msvcrt.dll',
ws2help.dll',
advapi32.dll',
rpcrt4.dll',
mswsock.dll',
user32.dll',
gdi32.dll',
ATTPRV32.dll',
Loaded symbols for 'C:\WINDOWS\system32\MFC42D.DLL'
Loaded symbols for 'C:\WINDOWS\system32\MSVCRTD.DLL'
shell32.dll',
SHLWAPI.DLL',
Loaded symbols for 'C:\WINDOWS\system32\MFCO42D.DLL'
Loaded symbols for 'C:\WINDOWS\system32\MSVCIRTD.DLL'
AMInit.dll',
Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.1643_x-ww_7c3a9bc6\comctl32.dll',
comctl32.dll',
EntAPI.dll',
psapi.dll',
netapi32.dll',
msctf.dll',
mslbui.dll',
First-chance exception in MyTray.exe (KERNEL32.DLL): 0xC0000005: Access Violation.
dnsapi.dll',
winrnr.dll',
wldap32.dll',
rasadhlp.dll',
wshtcpip.dll',
The thread 0xDF4 has exited with code 0 (0x0).
wshtcpip.dll',
The thread 0x880 has exited with code 0 (0x0).
Loaded 'C:\Program Files\Microsoft Visual Studio\Common\Tools\SPYHK55.DLL',

V

Use Dependency Walker

Rob Caldecott21-Sep-05 6:57

Rob Caldecott

21-Sep-05 6:57

Download Dependency Walker from http://www.dependencywalker.com/[^] - it's invaluble.

Re: Use Dependency Walker

Eytukan21-Sep-05 7:03

Eytukan

21-Sep-05 7:03

i just found its already installed in my system but i never used it, i think iti'll solve my problem, thank you Smile | :)

Re: Use Dependency Walker

David Crow21-Sep-05 9:36