C / C++ / MFC Discussion Boards

Re: How to make code block works faster?

Tim Smith13-May-04 3:33

13-May-04 3:33

Please read my response. You can make "b = (BYTE) a " a LOT faster. It involves using a "fast ftol". Search google for that phrase.

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Re: How to make code block works faster?

Diddy14-May-04 1:02

Diddy

14-May-04 1:02

I think you use static_cast rather than C style casts and ass /Qifist as a compiler swich to swich it on.

Or use assembly

#pragma warning (disable:4035)
__declspec( naked ) long Q_ftol( float f )
{
static int tmp;
__asm fld dword ptr [esp+4]
__asm fistp tmp
__asm mov eax, tmp
__asm ret
}

using mscomctl.ocx in mfc-project

bruensch11-May-04 2:39

bruensch

11-May-04 2:39

I want to use the activeX Listview from mscomctl.ocx in my mfc- project. I couldn't find any information about integration in mfc application. there is only a help for visual basic developers.

is there anybody who can provide me with information! e.g. examples
or is there an alternative which provide the same functionality!

Bruno

Re: using mscomctl.ocx in mfc-project

nguyenvhn11-May-04 22:31

nguyenvhn

11-May-04 22:31

You are simply to open resource editor, insert an instance of list view control in dialog. Then everything is very simple.

If you want to use list control in nondialog windows, the following is an excerpt from MSDN:

1. Define the control in the view or window class.
2. Call the control's Create member function, possibly in OnInitialUpdate, possibly as early as the parent window's OnCreate handler function (if you're subclassing the control). Set the styles for the control.

Read more in: Visual C++ programming guide -> Adding User Interface Features -> Details -> Control Topics -> Using List Control

Re: using mscomctl.ocx in mfc-project

bruensch12-May-04 2:49

bruensch

12-May-04 2:49

Thanks for the information. The Visual programming guide give me no information about the activeX Listview from mscomctl.ocx.

I need the functionality like the right part of the explorer (multiselect row, sort ...) therefore the MFC class CListCtrl have not included such features.

Bruno

How to use Amazon Web Services..

Sumit Kapoor11-May-04 2:12

Sumit Kapoor

11-May-04 2:12

Sub : How to use Amazon Web Services..

Hi all...

Please let me know How to start with amazon web services..
I'm not finding any XML or REST Query format to send request to amazon..
I've purchased Seller account but How to use that to upload Items..I don't know...
Please help me getting start..
I hope some one definatly know about this
e-mail if attachment at sumit_kapoor1980@hotmail.com
Thanks...

..---Sumit Kapoor---

Help me to play sound in C++

joze511-May-04 1:46

joze5

11-May-04 1:46

Hi! I got one small problem and I wonder if somebody could help me with this program in C++. Here is the program:
Const SND_ASYNC = &H1

Private Declare Function PlaySound Lib "winmm.dll" Alias "PlaySoundA" (ByVal _
lpszName As String, ByVal hModule As Long, ByVal dwFlags As Long) As Long

' Play a WAV file.
'
' FileName is a string containing the full path of the file.
' If SyncExec is True, the sound is played synchronously
' Returns True if no errors occurred

Function PlayWAV(N:\sound\1.wav, Optional SyncExec As Boolean) As Boolean
If SyncExec Then
' play the file synchronously
PlayWAV = PlaySound(FileName, 0, 0)
Else
' play the file asynchronously
PlayWAV = PlaySound(FileName, 0, SND_ASYNC)
End If
End Function

Program is signing me an error in line 1. I don't know why. If somebody has a solution, please help me with my program!

Rachel Smile | :)

Re: Help me to play sound in C++

Sumit Kapoor11-May-04 2:25

Sumit Kapoor

11-May-04 2:25

HI
Check out New site for source www.maxcode.com

Never consider anything Impossible before trying to solve that..---Sumit Kapoor---

Re: Help me to play sound in C++

David Crow11-May-04 3:38

David Crow

11-May-04 3:38

You do realize that the code you've shown is VB and not C++, don't you?

joze5 wrote:
Program is signing me an error in line 1. I don't know why.

What's the error?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

why compile no error,but when running note"unable to open input file"

vividtang11-May-04 1:37

vividtang

11-May-04 1:37

#include<iostream>
#include<fstream>
#include<string>
int main()
{ using namespace std;
ofstream outfile("F:\myoutfile.txt");
ifstream infile("F:\myinfile.txt");
if(!infile)
{
cerr<<"error,unable to open input file\n";
return -1;
}
if(!outfile)
{
cerr<<"error,unable to open output file!\n";
return -2;
}
string word;
while(infile>>word)
outfile<

Re: why compile no error,but when running note"unable to open input file"

mcsherry11-May-04 1:42

mcsherry

11-May-04 1:42

have you tried using double backslash in the path name as in C++ and C a single backslash followed by a letter is a special case, e.g. \n is newline

hth

Re: why compile no error,but when running note"unable to open input file"

vividtang11-May-04 2:18

vividtang

11-May-04 2:18

ofstream outfile("F:\\test\\myoutfile.txt");
ifstream infile("F:\\test\\myinfile.txt");
ok!

Re: why compile no error,but when running note"unable to open input file"

Rafael Fernández López11-May-04 5:04

Rafael Fernández López

11-May-04 5:04

Compiler doesn't looks for your files... that is not a compiler error !!!. is not a sintaxis error... because is a string... You know what I mean ?? Wink | ;)

Written by: Rafael Fernández López.

Visit: http://www.maestroprogramador.com

getdlgitem/getwindowtext

raysuman11-May-04 1:34

raysuman

11-May-04 1:34

I have to get back the static text on a dialog programatically. Say version number on help about dialog which will keep on changing .
But when the code like getwindow text executes the dialog is not active . So grtting invalid handle .please advise

Suman ray

Re: getdlgitem/getwindowtext

mcsherry11-May-04 1:40

mcsherry

11-May-04 1:40

assuming you have an object in your main program for this dialog and you are also using MFC, then you can assign a variable (CString probably) to the text box using the class wizard and then you should be able to access it in your main program (you may need to add a Get method).

hth

Re: getdlgitem/getwindowtext

raysuman11-May-04 1:55

raysuman

11-May-04 1:55

the problem is that there is no gurantee that this object will be created in program lifetime. In fact if the user does not click on help->about , object is never created.

Suman ray

Re: getdlgitem/getwindowtext

mcsherry11-May-04 2:00

mcsherry

11-May-04 2:00

Couldn't you create the object in your constructor and then override the help->about method so that it just does "m_HelpDialog.DoModal ( ) ;" ?

This way the object will always exist during the program run.

Andy,

Re: getdlgitem/getwindowtext

HENDRIK R11-May-04 3:04

HENDRIK R

11-May-04 3:04

raysuman wrote:
the problem is that there is no gurantee that this object will be created in program lifetime

perhaps calling IsWindow(..) with the handle of the static control to receive the text from before doing so helps

We are men. We are different. We have only one word for soap. We do not own candles. We have never seen anything of any value in a craft shop. We do not own magazines full of photographs of celebrities with their clothes on. - Steve

Static and Group Box Controls

Steve Thresher11-May-04 1:14

Steve Thresher

11-May-04 1:14

Does anybody know how windows determines the background colour to use for static and group box controls?

At the moment I have a window (not a dialog) that contains a tab control which contains group, static and edit controls. This works fine if themes are not being used. If I enable themes the background colour for the static and group box controls is different to the colour of the tab control. It would appear windows is using the background colour from the parent window instead of the tab control. I'm wondering if windows uses different rules when the parent is a dialog?

Can anybody offer any suggestions?

Systems AXIS Ltd - Software for Business ...

Re: Static and Group Box Controls

Diddy11-May-04 3:30

Diddy

11-May-04 3:30

Control colour's are set via WM_CTLCOLORXXX messages and the returned brush is used to paint the controls background, and the DC passed is used to paint the "foreground".

Theme's are probably getting in the way, and I'm not sure how they fit in the grand scheme of things - I guess you just have a app with a custom manifest file and it looks ok with themes off but not on.

I do remember seeing many apps - MS ones included - that have problems with Tab controls in XP.

This artical may be of use:

http://www.codeproject.com/wtl/ThemedDialog.asp

Windows Explorer Fonts

Chris Ulliott11-May-04 0:21

Chris Ulliott

11-May-04 0:21

Hi All,

Can someone tell me how to identify the font used by Windows Explorer when showing file names? Is it somewhere in the registry?

Thanks,

Chris

Re: Windows Explorer Fonts

Diddy11-May-04 3:51

Diddy

11-May-04 3:51

I belive it lives at:

HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics\IconFont

Though if I remeber correctly it's a pain as it's stored as a REG_BINARY along with some extra info.

See

http://perso.wanadoo.fr/tmcd2/Shell.htm#IconFont

Re: Windows Explorer Fonts

Chris Ulliott11-May-04 3:54

Chris Ulliott

11-May-04 3:54

Hi Diddy,

Its ok I found the following... Thanks anyway..

Chris

SystemParametersInfo(SPI_GETICONTITLELOGFONT, uifnt, &fnt, 0);

Error message for 12045

__Sigma11-May-04 0:14

__Sigma

11-May-04 0:14

Hi,
I am trying to get the error description for the error 12045 using the following code, but it doesnt work and gives me error 317. Any ideas how to get this working?

if (!FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
error_code,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
pMsgBuf,
4*1024,
NULL ))

Thanks,
Sigma

Re: Error message for 12045

Genius Logics11-May-04 0:34

Genius Logics

11-May-04 0:34

Well I am using the following code. This checks for error messages of networks too

<br />
	LPVOID lpMsgBuf;	//	Pointer to buffer to receive the error message<br />
<br />
	DWORD dwRet = ::FormatMessage( <br />
		           FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,<br />
				   NULL, <br />
				   iErrCode,<br />
				   MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),<br />
				   (LPTSTR) &lpMsgBuf,<br />
				   0,<br />
				   NULL);<br />
<br />
	if (dwRet == 0)		//	if no message retreived<br />
	{		//		check for network-related error<br />
			HMODULE hDll = ::LoadLibraryEx( TEXT("netmsg.dll"), NULL, <br />
			                            DONT_RESOLVE_DLL_REFERENCES );<br />
			{<br />
				if (hDll != NULL)<br />
				{<br />
					dwRet = FormatMessage(<br />
							FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_FROM_SYSTEM,<br />
							hDll,<br />
							iErrCode,<br />
							MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),<br />
							(LPTSTR) &lpMsgBuf,<br />
							0,<br />
							NULL);<br />
					::FreeLibrary(hDll);<br />
				}<br />
			}<br />
	}<br />
<br />
	if ( m_pszErrMessage!=NULL )<br />
	{<br />
		delete []m_pszErrMessage;<br />
		m_pszErrMessage = NULL;<br />
	}<br />
<br />
	if (lpMsgBuf != NULL)<br />
	{<br />
		m_pszErrMessage = new TCHAR[dwRet+1];<br />
		::strcpy( m_pszErrMessage, (TCHAR*)lpMsgBuf );<br />
		m_pszErrMessage[dwRet-2 ] = 0;<br />
		::LocalFree( lpMsgBuf );<br />
	}<br />
	else<br />
	{<br />
		m_pszErrMessage = new TCHAR[<br />
				strlen("Unknown error in evaluating Error Code")+1];<br />
<br />
		::strcpy(m_pszErrMessage, "Unknown error in evaluating Error Code");<br />
	}<br />

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