C / C++ / MFC Discussion Boards

Pixinger7729-Nov-05 3:09

29-Nov-05 3:09

Hi,
is it possible to change the Threadname of a Thread that was created with "AfxBeginThread()"?
In C# it is quite easy, but i couldn't find out a method for C++/MFC. It would be nice to read the correct threadname in the debuggerwindow. Right now it always tells me: "The Thread 'Win32 Thread' finished with code 0 (0x0).".

Thanks,
Snow

Re: Change Thread Name in MFC

Blake Miller29-Nov-05 5:13

Blake Miller

29-Nov-05 5:13

<br />
<br />
//- -----------------------------------------------------------------<br />
//- SetThreadName.H Header File<br />
//- -----------------------------------------------------------------<br />
<br />
#pragma once<br />
<br />
extern "C"<br />
void WINAPI SetCurrentThreadName(<br />
    LPCTSTR szThreadName<br />
    );<br />
<br />
extern "C"<br />
void WINAPI SetThreadName(<br />
    DWORD   dwThreadID, <br />
    LPCTSTR szThreadName<br />
    );<br />
<br />
//- -----------------------------------------------------------------<br />
//- END SetThreadName.H Header File<br />
//- -----------------------------------------------------------------<br />
<br />
//- -----------------------------------------------------------------<br />
//- SetThreadName.Cpp Source File<br />
//- -----------------------------------------------------------------<br />
<br />
#include "stdafx.h"<br />
#include "SetThreadName.H"<br />
<br />
#define MS_VC_STN_EXCEPTION 0x406d1388<br />
<br />
#pragma pack( push, PPSetThreadName)<br />
#pragma pack( 4 )<br />
<br />
typedef struct _SETTHREADNAMEINFO<br />
{<br />
    DWORD   dwType;     // must be 0x1000<br />
    LPCSTR  szName;     // pointer to name in same address space<br />
                        // thread name should be limited to 9 characters<br />
    DWORD   dwThreadId; // thread Id, -1 = caller thread<br />
    DWORD   dwFlags;    // reserved for future use, must be zero<br />
<br />
} SETTHREADNAMEINFO;<br />
<br />
#pragma pack( pop, PPSetThreadName )<br />
<br />
extern "C"<br />
void WINAPI SetCurrentThreadName(<br />
    LPCTSTR szThreadName<br />
){<br />
    DWORD dwThreadId = GetCurrentThreadId();<br />
    SetThreadName(dwThreadId, szThreadName);<br />
}<br />
<br />
extern "C"<br />
void WINAPI SetThreadName(<br />
    DWORD   dwThreadId, <br />
    LPCTSTR szThreadName<br />
){<br />
    // only change names if debugger is loaded<br />
    if( IsDebuggerPresent() ){<br />
<br />
        // thread name should be limited to 9 characters<br />
        SETTHREADNAMEINFO STNInfo;<br />
        TCHAR             szTempName[10];<br />
        <br />
        ZeroMemory(&STNInfo, sizeof(SETTHREADNAMEINFO));<br />
        <br />
        // force name to length of 9 characters<br />
        ZeroMemory(szTempName, sizeof(szTempName));<br />
        lstrcpyn(szTempName, szThreadName, 9);<br />
<br />
        STNInfo.dwType     = 0x1000;<br />
        STNInfo.szName     = szTempName;<br />
        STNInfo.dwThreadId = dwThreadId;<br />
        STNInfo.dwFlags    = 0;<br />
<br />
        TCHAR szMessage[512];<br />
        wsprintf(szMessage, "Setting thread 0x%08lx name to '%s'", dwThreadId, szTempName);<br />
        OutputDebugString(szMessage);<br />
<br />
        __try<br />
        {<br />
            RaiseException( MS_VC_STN_EXCEPTION, <br />
                            0, <br />
                            sizeof(STNInfo) / sizeof(DWORD),<br />
                            (DWORD *)&STNInfo);<br />
        }<br />
        __except (EXCEPTION_CONTINUE_EXECUTION)<br />
        {<br />
        }<br />
<br />
    }<br />
}<br />
<br />
//- -----------------------------------------------------------------<br />
//- END SetThreadName.Cpp Source File<br />
//- -----------------------------------------------------------------<br />
<br />

Re: Change Thread Name in MFC

Blake Miller29-Nov-05 6:32

Blake Miller

29-Nov-05 6:32

Oh yeah, and go here....

http://www.codeproject.com/threads/Name_threads_in_debugger.asp[^]

I should have checked first... D'Oh! | :doh:

-- modified at 12:33 Tuesday 29th November, 2005

Also check this link:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsdebug/html/vxtsksettingthreadname.asp[^]

Re: Change Thread Name in MFC

Pixinger7722-Dec-05 23:21

Pixinger77

22-Dec-05 23:21

Thanks thats what i wanted Wink | ;-)

How I can read the value of CPU's program counter .

Loc Milkyway29-Nov-05 3:07

Loc Milkyway

29-Nov-05 3:07

every time Button1 is click, the value of CPU's program counter is read and displayed on edit box1.
Then Button2 is click, the value of CPU's program counter is read and displayed on edit box2.
My purpose is to measure how long the device reponds to computer's command.
Cheers.

MilkyWay

pop-up menu problem, inside splitter, using doc/view

l00p1n629-Nov-05 3:00

l00p1n6

29-Nov-05 3:00

Im having problem displaying pop-up menu

i only get the beginning of a menu and submenus
i did screenshoots of that but i cant post them so i'll use ASCII

like this:
╔╗
||
||
||
|| ╔--------╗
|| |submenu|
|| ╚--------╝
||
||
╚╝

(that vertical rectangle loks like border between splitter windows and between it and the submenu is the exact amount of space as it should be for text "menu 3" to fit)

where it should be like this:
╔-------╗
|menu 1|
|-------|
|menu 2|
|-------|╔--------╗
|menu 3>|submenu|
|-------|╚--------╝
|menu 4|
╚-------╝

first i load menu in CMenu in OnInitialUpdate():

m_popUpMenu.LoadMenu(IDR_POP_UP_MENU);

then i use pop up OnRightclick()

m_popUpMenu.TrackPopupMenu(TPM_LEFTALIGN, point.x, point.y, this);

any help will do
thank you

problem with DirectSound application

8ki29-Nov-05 3:00

8ki

29-Nov-05 3:00

hi all!
I have a problem with my directsound application.Every time i play my sound and if there is another application playing(e.g windows media player) i get corupted sound.My cooperative level is DSSCL_PRIORITY. I also have problem when trying to create DirecSound object with CoCreateInstance metod.Curently i am creating it with DirectSoundCreate metod.

Anyone have some experience with this?

Many thanks!

How to use Enum::Parse properly

DWOO29-Nov-05 2:54

DWOO

29-Nov-05 2:54

Environment: XP Pro SP2, VS.Net2003

I am setting up some context menu items that have shortcut keys associated to them. The shortcut keys are: Shortcut::CtrlShift0 to Shortcut::ChrlShift9. This how I implement it:

for( i=0 ; i<10 ; ++i )
{
miShortcuts[i]->Index = i ;
miShortcuts[i]->Text = String::Concat(S"Shortcut ", i.ToString() ) ;
miShortcuts[i]->Shortcut = static_cast<shortcut>(*dynamic_cast<shortcut *="">(Enum::Parse(__typeof(Shortcut), String::Concat(S"CtrlShift",i.ToString())))) ;
miShortcuts[i]->Click += new System::EventHandler( this, MenuItem_Shortcut_Click ) ;
}

When I compiled it, I got this error:

error C2440: 'static_cast' : cannot convert from 'System::Enum' to 'System::Windows::Forms::Shortcut'

I have tried many things but I keep ending with similar error messages. Your help is appreciated.

Thanks! Cool | :cool:

Filters (highpass, lowpass, bandpass)

Obliterator29-Nov-05 2:49

Obliterator

29-Nov-05 2:49

Hi all,

I'm seeking a class/module to help with the filtering of some data.

Things like Butterworth or Chebyshev filters, all fairly standard stuff I'm sure.
Problem is I can't seem to find any code out there?
Can you help point me in the right direction?

Cheers

--

The Obliterator

Re: Filters (highpass, lowpass, bandpass)

Russell^'29-Nov-05 3:54

Russell^'

29-Nov-05 3:54

If you are finding nothing that can help you, you could try to implement FIR and IIR filters (quite easy). And then use programs like Matlab to know the impulse responce af a particular filter as 'Butterworth' or 'Chebyshev' Sniff | :^)

and implement it with a FIR.

Matteo

Re: Filters (highpass, lowpass, bandpass)

C^hris L^osinger29-Nov-05 5:01

C^hris L^osinger

29-Nov-05 5:01

first you need code to do FFT (Google "FFT Bourke").

then you need some code to do a filter on the FD data (Google "Butterworth Filter FFT").

Cleek | Image Toolkits | Thumbnail maker

Taking controll over...

Larsson29-Nov-05 2:14

Larsson

29-Nov-05 2:14

Is it possible to take controll to the Microsoft document and enter text and make any changes?

I need to remove the flag that make you see the changes you have made. Is that possible to do? and if so how?

Re: Taking controll over...

Cedric Moonen29-Nov-05 3:38

Cedric Moonen

29-Nov-05 3:38

Which document ? Which changes ? Confused | :confused:

You mean opening a word document with your program and modify its content ? If this is the case, look for word automation.

CFileDialog

vijayganesh29-Nov-05 1:27

vijayganesh

29-Nov-05 1:27

how to use CFileDialog to save a file??

vj

Re: CFileDialog

ThatsAlok29-Nov-05 2:10

ThatsAlok

29-Nov-05 2:10

vijayganesh wrote:
how to use CFileDialog to save a file??

You cannot use CFileDialog to save the File, you have to implement you logic for that.. But you can open it in Save As mode by specifying FALSE in construtor while creating CFileDialog object..

like this

CFileDialog dlg(FALSE);

"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

Re: CFileDialog

vijayganesh29-Nov-05 21:01

vijayganesh

29-Nov-05 21:01

ya tried it out with it.. but i am not abl to get th file name from the user....

parsing error on viewing class wizard

swaapu29-Nov-05 1:23

swaapu

29-Nov-05 1:23

HI!!!
I am working on an MFC Application. When I view the class wizard an error occurs which is:

Parsing Error: Expected ";"
Input Line: "void Convert(CString str1,CString str2);"

I had checked the application. But, I didn`t understand the cause for this type of error. Wat may be the problem? Wat should I do?

Thanx a lot

"If you change then change for the good."

Re: parsing error on viewing class wizard

Cedric Moonen29-Nov-05 2:16

Cedric Moonen

29-Nov-05 2:16

You probably edited something wrapped into AFX.... 'tags'. Post the code where this error occurs (the complete file if this is small file)

MSXML6.lib error on Debug build

Shiva Prasad29-Nov-05 1:07

Shiva Prasad

29-Nov-05 1:07

Hi,

compiler: VC++ 6.0

problem:

When a Release Build is done, it works fine..

We are using MSXML 6.0 in our code.

But during Debug Build of a win32 module, it gives the following error.

msxml6.lib(msxml6_i.obj) : fatal error LNK1103: debugging information corrupt; recompile module
Error executing link.exe.

One possible reason we could think of is the msxml6.lib is of release build. so it builds on release mode and gives the error on debug build

We need a Debug build since we need to debug the code, can anybody suggest any work around in the compiler setting..

I tried out the following
try out the following, but no use:

Turn off optimization with the /Od (Disable) option.
Disable minimal rebuild with the /Gm– (Enable Minimal Rebuild) option.
Compile with the /Gy (Enable Function-Level Linking) option to package functions.
Use a different code generation option. See the /G (Optimize for Processor) options.
Change the order of functions and global variables.

I get the same error when I enable the Debug option of compiler in Release Mode.

Any suggestion or workaround is highly appreciated.

Thanks,

Shiva

Re: MSXML6.lib error on Debug build

toxcct29-Nov-05 2:13

toxcct

29-Nov-05 2:13

aren't you trying to debug a dll which was compiled in release mode ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

GDI+ Bitmap/Graphics::DrawImage(..) Question..

fetox29-Nov-05 0:54

fetox

29-Nov-05 0:54

hi,

i'm using GDI+ in a MFC based App under Visual Studio .NET and have a problem with the Bitmap class.. if i use the following code in some drawing function, it work's perfectly well (although slow, cause of the steady reloading of the image, which is crap..)

void DrawSomething(Graphics *g) {
Bitmap myBitmap(L"somepicture.png", false);
g->DrawImage(&myBitmap, RectF(somecoordinates));
}

now i'd like to keep the Bitmap object resident, by adding static in fron of the Bitmap declaration, or some new/delete construct in the embedding class, but in every case my Bitmap(-Object?) seems to be lost.. no error, no display of the image!? even Bitmap::GetHeight() returns 0 in that case, without crashing.. .NET framework issue? but it's unmanaged code, so garbage collection should not happen..

any ideas??
regards
olli

Saving Graphics in VC++

vijayganesh28-Nov-05 23:46

vijayganesh

28-Nov-05 23:46

hi all..

i need a small help.. i am developing an application in vc..
Which is similar to that of MS Paint application.. that is my application..
contains free hand diagram in view window then drawing using dilaog box for..
getting Co-ordinate for the diagrams such as line,rectangle, circle.. now i need a save option in the file menu as well open option.. i used CMetaFileDC.. but its not working for graphics.. plz help me out how to save the view window document and retrive it back by using open...

Thanks in Advance...

vj

Re: Saving Graphics in VC++

Rajesh R Subramanian29-Nov-05 1:26

Rajesh R Subramanian

29-Nov-05 1:26

I am not sure how well this could perform, but this will work. You may read the information pixel by pixel and store it into a file. Say, XY(31,45)=RGB(132,53,90); and while opening a file, you could read this file and paint accordigly. I know this is a very crazy way of doing it, D'Oh! | :doh:

but may be a temporary solution for you.:->

Rajesh R. Subramanian

Akruti Software,
Bombay, India.

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

-- modified at 7:28 Tuesday 29th November, 2005

Worker Thread related problem?

dp_7628-Nov-05 23:20

dp_76

28-Nov-05 23:20

The Worker Thread in my MFC SDI Application does some heavy job.
The user can stop in between by pressing the <stop> toolbar button or Tools menu -> Stop.

To enable the Stop toolbar button before the control enters the worker thread, i have used the following line of code:

pApp->bDiskReadProcessStarted = TRUE;
pframe->pToolBar->SendMessage(TB_ENABLEBUTTON,ID_TOOLS_STOPCURRENTPROCESS,(LPARAM)MAKELONG(TRUE,0));

& then is the code for the creation of the Worker Thread:

pApp->pWorkerThread = AfxBeginThread(MaskingFiles_WorkerThread, (void*)pApp->MFC_Obj);

BUT as a result of the above code the Stop button is enabled only after the worker thread has completed. where as i wanted it to be enables before the start of worker thread.

code in the OnUpdateUI for Stop button:

void CMainFrame::OnUpdateToolsStopcurrentprocess(CCmdUI* pCmdUI)
{
CStellarPhoenixApp *pApp = (CStellarPhoenixApp*)AfxGetApp();

if(pApp->bDiskReadProcessStarted)
{
pCmdUI->Enable(TRUE);
}
else
pCmdUI->Enable(FALSE);
}

I donot understand y this is happening.

Waiting for suggestions

dp_76 Sleepy | :zzz:

OpenGL and very big images

Russell^'28-Nov-05 22:15

Russell^'

28-Nov-05 22:15

Hi all,
I'm finish to write a software to visualize very big files showing thats as an image that could be bigger than 1000x1000000 pxl (so very very long images).
I choosed to don't load the all the file into RAM (required from 100MB to more than 1GB), but load only some rows and colums building a sort of undersampled image: in this way I need only 2/5MB of RAM memory. And at the moment the visualizator is very fast.
Now I'm thinking that a future version of that software could show (in 3D) with OpenGL more files showing thats one on the other, like some sheets of paper that surely you have behind your eyes on your desk.
I'm a beginner in OpenGL so I'm asking myself if, with this big files, it is possible or not to do that in an efficient way without lose a lot of CPU-speed!
Can you tell me some good tips/news? Some good articles?
Thanks in advantage, Matteo.

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