C / C++ / MFC Discussion Boards

Distributed compiling with VStudio 6.0

Braulio Dez15-Apr-02 23:23

Braulio Dez

15-Apr-02 23:23

Hi,

We have a big monolitic ( Frown | :-(

), project, that takes half an hour to compile ( Scassi HD, and 500 Mb. Memory), we don´t have time to chop it into smaller pieces ( now it´s not the time for that Smile | :)

)...

... But we have like three more computers free, so would it be possible to send to that computers a bunch of files, and that machines could compile them ? ( so if I have 400 files I could compile 50 here, 50 there, 50..., in paralel).

Does can be done on VStudio 6.0 ? And .net ? ... or that´s to good to be true ?

Thanks in advance, Greetings
Braulio

Blocking Sockets - and don´t get the last byte

BtK15-Apr-02 23:12

BtK

15-Apr-02 23:12

Hi

i got a serious Problem with the Blocking Sockets Part of WinSock2.

A Java Applet is connecting to my TCP/IP Server (written in C++) - and now they are talking... and it works - ... but everytime the Java Applet sends a Message to the C++ the LAST BYTE doesn´t arrive. Its there when the next message is sent from the Applet - but until then.... no LAST BYTE....

does anybody know how to workaround - or WHY the H**** this is occuring ?

Daniel

Re: Blocking Sockets - and don´t get the last byte

Le centriste16-Apr-02 3:17

Le centriste

16-Apr-02 3:17

Do you have more information? What protocol do you use on your socket? HTTP, FTP, in-house?

If the protocol you use specifies in its header the number of incoming bytes, make sure you don't miscalculate.

Michel

If I am wrong or said something stupid, I apologize in advance Wink | ;)

Why I Can't get WIM_DATA message in callback function 'waveInProc' ?

Cloudway15-Apr-02 22:57

Cloudway

15-Apr-02 22:57

I want to record sound with callback function.

I call waveInOpen, waveInPrepareHeader, waveInAddBuffer etc. successfully.
And I can get WIM_OPEN and WIM_CLOSE message in the callback function.

BUT I CAN'T get WIM_DATA message! Why???

BTW: I can get MM_WIM_DATA message when I use threads instead of callback
function, and I can get WOM_DONE message when using callback function waveOutProc.
Confused | :confused:

Re: Why I Can't get WIM_DATA message in callback function 'waveInProc' ?

Cloudway15-Apr-02 23:09

Cloudway

15-Apr-02 23:09

Hey!
I found the answer.
I forget to call waveInStart. Blush | :O

How to set the size of a scrollbox on the scrollbar?

Feng Qin15-Apr-02 22:46

Feng Qin

15-Apr-02 22:46

As title.

I'm amumu, and you?

System's ImageList

Flatline15-Apr-02 21:45

Flatline

15-Apr-02 21:45

iS it possible to get the system's image list and use that to a tree control so that it the images in the tree control of Windows Explorer is the same as with the images of the tree control my application??

Getting the whole viewport size of SCrollView

Flatline15-Apr-02 21:00

Flatline

15-Apr-02 21:00

How do i capture the whole viewport size of a CScrollView to a bitmap?...

I'm making a paint program and i want to save the whole drawing including the hidden part of the bitmap.... (the part which is not scrolled)...

I tried Bitbliting the ScreenDC into memDC which has a bitmap attached to it
but it only captured the visible part.. worst it also captured the Scrollbars...

Message Box problem

Yamuna15-Apr-02 18:27

Yamuna

15-Apr-02 18:27

Hi,
I am using AfxMessageBox() API in my application.Sometimes the message box doesn't come up and when I debugged and saw found that the return value is 0 which means that there is no enough memory to display the message box.What do I do to solve this problem?
Thank You.
Yamuna.E.

Yamuna.E.

Re: Message Box problem

Christian Graus15-Apr-02 22:57

Christian Graus

15-Apr-02 22:57

Buy more RAM ?

I've NEVER had AfxMessageBox fail, what makes you think it's memory related ? When does it happen ?

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?!
- Jon Hulatt, 22/3/2002

Re: Message Box problem

Yamuna15-Apr-02 23:18

Yamuna

15-Apr-02 23:18

Even for me this is the first time AfxMessageBox fails.
MSDN tells that AfxMessageBox on failure returns 0 and that it is due to no enough memory.

I forgot to mention the scenario.
This messagebox I call from within a thread function(via CreateThread) which takes as its parameter the string to be displayed and I am sure there is no problem with string passing.This I made sure by hard-coding the string just to check whether it works fine with hard-coded string value.But even in that case I got the same problem.

But now I tried using MessageBox API instead of AfxMessageBox.Its working fine.But couldn't get the reason behind the problem.
Thank You.
Yamuna.E.

Yamuna.E.

Re: Message Box problem

Christian Graus15-Apr-02 23:26

Christian Graus

15-Apr-02 23:26

It's certainly an odd problem. In the future, TRACE or OutputDebugString will allow you to check a variable value in Debug mode without having to bring up a dialog.

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?!
- Jon Hulatt, 22/3/2002

Re: Message Box problem

15-Apr-02 23:39

Fine Thank You.
Yamuna.E.

Yamuna.E.

Hiding Web Browser Control in a dialog

Alex Cramer15-Apr-02 18:08

Alex Cramer

15-Apr-02 18:08

Hi all!
I want to do next: user clicks the button, and Web Browser replaces by richedit control (in a dialog). TROUBLE: after hiding of web browser, its window handle become not valid. Here's a code:

void CCalendarDlg::OnViewEditSwitch()
{
CString strBtnText;
m_btnEditView.GetWindowText(strBtnText);

if(strBtnText == EDIT_BUTTON_TEXT)
{
m_btnEditView.SetWindowText(VIEW_BUTTON_TEXT);
m_Browser.ShowWindow(SW_HIDE);
m_wndRichEdit.ShowWindow(SW_SHOW);
}
else
{
m_btnEditView.SetWindowText(EDIT_BUTTON_TEXT);
m_wndRichEdit.ShowWindow(SW_HIDE);
m_Browser.ShowWindow(SW_SHOW);
}
}

ERROR:
Debug assertion failed here:

BOOL CWnd::ShowWindow(int nCmdShow)
{
ASSERT(::IsWindow(m_hWnd));

if (m_pCtrlSite == NULL)
return ::ShowWindow(m_hWnd, nCmdShow);
else
return m_pCtrlSite->ShowWindow(nCmdShow);
}

Help, please!

Re: Hiding Web Browser Control in a dialog

Alex Cramer15-Apr-02 19:09

Alex Cramer

15-Apr-02 19:09

I solve the problem so:

void CCalendarDlg::OnViewEditSwitch()
{
CString strBtnText;
m_btnEditView.GetWindowText(strBtnText);

if(strBtnText == EDIT_BUTTON_TEXT)
{
m_btnEditView.SetWindowText(VIEW_BUTTON_TEXT);
//m_Browser.ShowWindow(SW_HIDE);
m_Browser.SetWindowPos(this, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOZORDER);

m_wndRichEdit.ShowWindow(SW_SHOW);
}
else
{
CRect rc;

m_wndRichEdit.GetWindowRect(&rc);
::MapWindowPoints(HWND_DESKTOP, *this, (LPPOINT) &rc, 2);

m_btnEditView.SetWindowText(EDIT_BUTTON_TEXT);
m_wndRichEdit.ShowWindow(SW_HIDE);

m_Browser.SetWindowPos(this, 0, 0, rc.Width() , rc.Height(),
SWP_NOMOVE | SWP_NOZORDER);
//m_Browser.ShowWindow(SW_SHOW);
}
}

But I'm interested in problem description... Why handle became invalid?

The CE Emulator & CeRapiInvoke()

Paul Wolfensberger15-Apr-02 17:10

Paul Wolfensberger

15-Apr-02 17:10

Is there anyway to test the DLL generated when creating a method which is to be called via CeRapiInvoke()?? I tried to a a LoadLibrary on it and don't get a handle back.

Re: The CE Emulator & CeRapiInvoke()

Ray Kinsella16-Apr-02 4:36

Ray Kinsella

16-Apr-02 4:36

what are you trying to do exactily ?

Are you trying to use RAPI, if so you should be linking your software to 'rapi.lib' and include 'rapi.h', these come with the Handheld PC SDK. RAPI is no COM complient.

Regards

Ray

"Je Suis Mort De Rire"

Re: The CE Emulator & CeRapiInvoke()

Paul Wolfensberger16-Apr-02 16:57

Paul Wolfensberger

16-Apr-02 16:57

Well....I'm already using RAPI and it works fine with a PDA. What I was asking was if there is a way to debug DLLs designed to be used in conjuction with CeRapiInvoke(). I could create another DLL project and simply reuse the call but I'm trying to debug the x86 DLL generated by eVC.

Paul

need help coverting a char* to a unsigned short*

15-Apr-02 17:06

ive tried both of these, and it still aint working Confused | :confused:

//WideCharToMultiByte(0,0,_ip_name,wcslen(_ip_name)+1,tempbuf_ip,256,0,0);
MultiByteToWideChar(CP_ACP, 0, tempbuf_ip, -1, (WCHAR*)_ip_name,256);

this is my code.

char *tempbuf_ip;
WCHAR _ip_name[256];

GetDlgItemText(hwnd, IDC_IP, tempbuf_ip, 256);
//WideCharToMultiByte(0,0,_ip_name,wcslen(_ip_name)+1,tempbuf_ip,256,0,0);
//MultiByteToWideChar(CP_ACP, 0, tempbuf_ip, -1, (WCHAR*)_ip_name,256);

and then _ip_name points to:

if( FAILED( hr = CreateHostAddress( _ip_name ) ) )
{
//blah
}

CreateHostAddress points to a WCHAR*;
HRESULT CreateHostAddress(WCHAR* pwszHost)

-Thanks for any help
Confused | :confused:

Re: need help coverting a char* to a unsigned short*

Christian Graus15-Apr-02 17:10

Christian Graus

15-Apr-02 17:10

You are trying to convert to BSTR. #include <comutil> ( from memory, or comdef, maybe ? ) and cast to _bstr_t.

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?!
- Jon Hulatt, 22/3/2002

Re: need help coverting a char* to a unsigned short*

Tim Smith16-Apr-02 2:21

Tim Smith

16-Apr-02 2:21

Well first off, there isn't any memory behind the tempbuf_ip pointer. Try defining tempbuf_ip as char tempbuf_ip [256].

After that,

MultiByteToWideChar(CP_ACP, 0, tempbuf_ip, -1, _ip_name,256);

should work just fine.

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Re: need help coverting a char* to a unsigned short*

moliate16-Apr-02 2:36

moliate

16-Apr-02 2:36

I usually do this:

#include <atlconv.h>

USES_CONVERSION; // initialize the macro <Hgt;
CString data;
m_dataBox.GetWindowText(data);
BSTR bstr =  ::SysAllocString (A2W(data));

/moliate

Re: need help coverting a char* to a unsigned short*

Le centriste16-Apr-02 3:22

Le centriste

16-Apr-02 3:22

moliate wrote:
BSTR bstr = A2W(data);

This line is bogus. When you will try to free the memory from the BSTR, your program is likely to crash.

The fact is that a BSTR has its 4 preceding bytes (the bytes before the actual string) specifying the length of the string. So a function expecting a BSTR will likely make your program crash. I suggest to replace with:

BSTR bstr = A2BSTR(data);

and don't forget to ::SysFreeString(bstr)!!

Michel

If I am wrong or said something stupid, I apologize in advance Wink | ;)

Re: need help coverting a char* to a unsigned short*

moliate16-Apr-02 4:22

moliate

16-Apr-02 4:22

You are absolutly right. I had forgotten the ::SysAllocString in the sample. Blush | :O

/moliate

Re: need help coverting a char* to a unsigned short*

16-Apr-02 5:19

Thanks for all the help guys, got it to work just fine now Smile | :)

I used _bstr_t. OMG | :OMG:

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