Getting started with RegEx ? - C / C++ / MFC Discussion Boards

oversight-[project-zero]26-Dec-05 7:34

26-Dec-05 7:34

Hi,

i want to code a custom mp3player (already coded it) to run from my webpage.
How do i create a component with or (*favor) without mfc?

so users visiting my http:/test.htm will
- install -ocx (or whatsoever)
- hear a mp3 played from my (component.mp3)

how do i do this? i have no idea at all.

Finding the EOF!!!

DDeliyiannis26-Dec-05 5:44

DDeliyiannis

26-Dec-05 5:44

Hi,I want to ask how I can get the EOF using CFile and CArchive classes.

Please, help me. Thank you.

Re: Finding the EOF!!!

Jörgen Sigvardsson26-Dec-05 5:51

Jörgen Sigvardsson

26-Dec-05 5:51

If you read the MSDN documentation for either class's read method you will find: the return value may be less than nCount if the end of file was reached

--
Pictures[^] from my Japan trip.

Re: Finding the EOF!!!

vikas amin26-Dec-05 19:30

vikas amin

26-Dec-05 19:30

SeekToEnd

will make the file pointer at the end of file data

Cool | :cool:

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

Re: Finding the EOF!!!

sunit526-Dec-05 20:22

sunit5

26-Dec-05 20:22

CFile::Seek( 0L, CFile::end ) same SeekToEnd
Blush | :O

DirectShow: Getting the window handle of a panel

Ramow26-Dec-05 5:17

Ramow

26-Dec-05 5:17

Hello,

I am trying to play video inside a panel.

The problem is that i can't get a window handle for the planel and here is the code that i am wriiting:

pWindow->put_Owner (this->panel1->Handle);

[Error C2664]: 'IVideoWindow::put_Owner' : cannot convert parameter 1 from 'System::IntPtr' to 'OAHWND'

How can i fix this problem. My end goal is just to play the file in the panel not in a pop up window!!

Thanks

Re: DirectShow: Getting the window handle of a panel

KifayatullahKhan26-Dec-05 18:28

KifayatullahKhan

26-Dec-05 18:28

try out with this
pWindow->put_Owner ((OAHWND)this->panel1->Handle);
and tell me again...

Kifayatulah
CDigital Islamabad
Tel.03215309934

Getting started with RegEx ?

Mark F.26-Dec-05 3:55

Mark F.

26-Dec-05 3:55

I want to learn how to use the Boost libraries for regular expressions. Can anyone give me a step by step on how to get RegEx and implement it into an MFC app? I would like to be able to search for string patterns in text document displayed in a CEditView or CRichEditView. Thanks. Confused | :confused:

Mark

Re: Getting started with RegEx ?

khan++26-Dec-05 4:15

khan++

26-Dec-05 4:15

I think this should help:
http://www.codeproject.com/cpp/notepadre.asp[^]
There are some other articles also here on CP.

this is this.

Re: Getting started with RegEx ?

Mark F.26-Dec-05 4:34

Mark F.

26-Dec-05 4:34

Thanks. I somehow missed this.

Mark

DrawIcon in MFC

inf00926-Dec-05 3:17

inf009

26-Dec-05 3:17

I am trying to paste an information icon into my mfc project.

I found in internet that the way to do it would be something
like this:

BOOL MyAppDlg::OnInitDialog()
{

CDialog::OnInitDialog();

CWinApp* pApp = AfxGetApp();
CDC* pDC = GetDC();
HICON hIcon;

if( pApp != 0 )
{
hIcon = pApp->LoadStandardIcon(IDI_INFORMATION);
bool b = pDC->DrawIcon( 20,230, hIcon );
}

ReleaseDC(pDC);
DestroyIcon( hIcon );
}

This is not working for me, the icon is not being drawn. So I changed this and
put it in a button event. So now when I press a button the icon is being drawn.
Why doesnt this work in OnInitDialog() ??

My other problem is that when my window goes into the background the icon disappears.
How should I draw the icon to be static in the gui?? Actually I would prefer to
paste it like a button or edit box instead to do it with code..Is there a way to do
this?

Thanks.

Re: DrawIcon in MFC

khan++26-Dec-05 3:42

khan++

26-Dec-05 3:42

I think the icon doesn't work in OnInitDialog because the dialog is painted again, so the icon disappears very quickly.

You can put the icon-drawing code in OnPaint().

OnPaint()<br />
if (IsIconic())<br />
{<br />
//whatever code.<br />
}<br />
else<br />
{<br />
//These lines should do it.<br />
CPaintDC dc(this);<br />
HICON hi = AfxGetApp()->LoadStandardIcon(MAKEINTRESOURCE(IDI_INFORMATION));<br />
dc.DrawIcon(10,10,hi);<br />
CDialog::OnPaint();<br />
}

About your last question, if you want a static icon on the dialog, you can put a picture control on it, and set the property: "type" to "Icon" and the "Image" to whatever icon you have in the project.

this is this.

Re: DrawIcon in MFC

inf00929-Dec-05 6:33

inf009

29-Dec-05 6:33

Thanks.

Dialog creation fails using excel addin in Visual C++ .Net but works with VC 6.0

Mayank Ji26-Dec-05 2:05

Mayank Ji

26-Dec-05 2:05

hi,
I have wrote the code for excel addin using xlsdk in VC++ MFC. The call to DoModal fails in VC++ 7.0 but works fine with VC++ 6.0.
Code given below

__declspec(dllexport) xlAutoOpen()
{
//... piece of code
CControlPane dlg;
dlg.DoModal; //Fails in VC 7.0 but works fine with VC 6.0
}

mayank.jindal@mphasis.com

DBPROP_IMMOBILEROWS

ArielR26-Dec-05 1:55

ArielR

26-Dec-05 1:55

I've created many tables in a SQL Database. I'am using Ole Db to open its. Every tables except one I can open with the Propety DBPROP_IMMOBILEROWS in true mode, but only one of this tables can't open that way, the Prob must be false, why?, Any Suggestion? thanks....

propset.AddProperty(DBPROP_IMMOBILEROWS, false); propSet must be false, other way I have Open Error....

FormatMessage,COM,MFC

MandiraT26-Dec-05 0:27

MandiraT

26-Dec-05 0:27

I have a inproc dll component and MFC Client. I wrote a mc file containing my user defined HRESULT. I am returning the custom HRESULT from the component in the following way:

<br />
if(SUCCEEDED(hr))<br />
	{<br />
		return E_FILESAVED;<br />
	}<br />

where E_FILESAVED is my custom HRESULT.
In my client I use the following :

<br />
	void* pMsgBuf;<br />
	HANDLE ghResDll;<br />
	char lpMsgBuf[BUFSIZE];//BUFSIZE =256<br />
	<br />
	<br />
	ghResDll = GetModuleHandle(NULL);<br />
	DWORD dw = GetLastError(); <br />
	CHAR szBuf[80]; <br />
	sprintf(szBuf,"%u",dw);<br />
	<br />
	AfxMessageBox((LPTSTR)szBuf,MB_OK,0);<br />
	::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER   |FORMAT_MESSAGE_FROM_HMODULE,<br />
		ghResDll,hr,MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),<br />
		(LPTSTR) &lpMsgBuf,BUFSIZE,NULL);<br />
AfxMessageBox((LPTSTR)lpMsgBuf,MB_OK,0);<br />

I see the correct hr (value) being returned in the client after my function in the component returns but the string is a null string.

Can anyone help me with this? Thanks in advance..

-Mandira

Re: FormatMessage,COM,MFC

khan++26-Dec-05 0:46

khan++

26-Dec-05 0:46

First, void* pMsgBuf; has been declared but not used. I think you should use pMsgBuf instead of the lpMsgBuf[BUFSIZE]; because the flag: FORMAT_MESSAGE_ALLOCATE_BUFFER causes memory to be allocated to the buffer, which you should deallocate using LocalFree(...);

And use FORMAT_MESSAGE_FROM_SYSTEM instead of FORMAT_MESSAGE_FROM_HMODULE.
Hope that helps.

this is this.

Re: FormatMessage,COM,MFC

MandiraT26-Dec-05 1:07

MandiraT

26-Dec-05 1:07

Hi,
Thanks for the reply. I had a LPVOID lpMsgBuf declared which i was using (not seen in posted code).
The reason I have used FORMAT_MESSAGE_FROM_HMODULE is because I have my own custom HRESULT codes defined in the mc (message compiler file) and their corresponding messages.
FORMAT_MESSAGE_FROM_SYSTEM only displays the system defined messages ..
and E_FILESAVED is a custom-defined message defined in mc file as follows:

<br />
MessageId       = 2000<br />
SymbolicName    = E_FILESAVED<br />
Language        = English<br />
File Saved Successfully!<br />

Thanks!

-Mandira

Re: FormatMessage,COM,MFC

khan++26-Dec-05 2:20

khan++

26-Dec-05 2:20

You can take the contents of the newly-created .RC file, and place them in the .RC2 file for example. That should help. If you don't have a .RC2 file, then place the text directly in the .RC file.

this is this.

Setting text in a control window of another app

Still learning how to code26-Dec-05 0:16

Still learning how to code

26-Dec-05 0:16

In the description of SetWindowText(), it states that "it cannot change the text of a control in another application". Does anyone know how to do this, given the handle of the window control ? Thanks (in advance !!)

Doug

Re: Setting text in a control window of another app

khan++26-Dec-05 0:28

khan++

26-Dec-05 0:28

It shouldn't be possible to write to another application's textbox because your text buffer is located in your program's address space, not their's.
You can check the following article:
http://www.codeproject.com/threads/winspy.asp[^]
There are other articles as well.

this is this.

Re: Setting text in a control window of another app

Still learning how to code26-Dec-05 1:58

Still learning how to code

26-Dec-05 1:58

Thanks Khan++ for your reply,
The article that you referenced is going to take "some reading" !! I DO hope that there is some way to write to another app's controls as otherwise my current idea is "stuffed" !!!
Any other replies/suggestions to my problem would be welcomed !!

Doug

Re: Setting text in a control window of another app

vipinasda26-Dec-05 5:30

vipinasda

26-Dec-05 5:30

As per SetWindowText documentation:-
"To set the text of a control in another process, send the WM_SETTEXT message directly instead of calling SetWindowText"

Vipin - MVP

Re: Setting text in a control window of another app

Still learning how to code26-Dec-05 11:07

Still learning how to code

26-Dec-05 11:07

Hi Vipin,
I use VC++ Ver 6.0 and can't see this statement in SetWindowText(). What version do you see it in ?

Doug

-- modified at 17:10 Monday 26th December, 2005

Just checked MSDN and I DO see that statement - why doesn't 6.0 include it ??
Anyhow, great relief, as the other possibilities are pretty complex !! Thanks everyone !

How to Hide in Trayicon.....

jakib25-Dec-05 23:55

jakib

25-Dec-05 23:55

Hi I have a problem.....

Actually i wrote a code which runs in service and hides in tray icon when minimized or closed...

When iam testing it by executing, its working , after when i restart the system to make run in service..

It is visible in service ,But No tray icon is Visible

If i keep any message Box in OnCreate() function ,
Then it's Working ...

Please help me...............

Thanks in Advance

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