Re: using _ultoa_s is creating a problem - C / C++ / MFC Discussion Boards

Re: Restart application ?

Stuart Dootson16-Dec-08 19:44

Stuart Dootson

16-Dec-08 19:44

Easiest way is to start a new instance of your application, immediately folloed by terminating the current one:

TCHAR thisExe[MAX_PATH];
::GetModuleFileName(0, thisExe, MAX_PATH);
::CreateProcess(exeName, 0, 0, 0, 0, 0, 0, 0, 0, 0);
::ExitProcess(0);

Re: Restart application ?

Jijo.Raj16-Dec-08 19:54

Jijo.Raj

16-Dec-08 19:54

Please check this article - Self-Restartable Application[^].

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

using _ultoa_s is creating a problem

VCProgrammer16-Dec-08 18:04

VCProgrammer

16-Dec-08 18:04

Hi all,

I am using _ultoa_s for conversion of long to string using this way

_ultoa_s ( pDir32->Dir [ i ].fileSize,(char *)Name,sizeof(&Name), 10 );
pListCtrl->SetItemText ( index, 2, (char *)Name);

But the problem is sometimes its executing fine but sometimes it just crashes my application....

i am working in vc 2008..

Thanks in advance

Re: using _ultoa_s is creating a problem

L. Madhavan16-Dec-08 19:37

L. Madhavan

16-Dec-08 19:37

sizeof(&Name) is the culprit - the size of an address (pointer) is always 4 bytes. (for a 32-bit compiler)

What type is the variable Name? If its a character array, you should use sizeof(Name). if it's a pointer, you need to know the size with which it was allocated.

Re: using _ultoa_s is creating a problem

Naveen16-Dec-08 19:45

Naveen

16-Dec-08 19:45

L. Madhavan wrote:
sizeof(&Name) is the culprit

I missed that point. How ever if the Name is allocated in the stack, there is no problem in using sizeof(Name).

nave

[OpenedFileFinder] [My Blog]

modified on Wednesday, December 17, 2008 2:34 AM

Re: using _ultoa_s is creating a problem

Malli_S16-Dec-08 19:59

Malli_S

16-Dec-08 19:59

But if Name is dynamically allocated on heap, sizeof(Name) and sizeof(&Name) both returns the size of pointer. Doesn't it ?

-Malli...!

Re: using _ultoa_s is creating a problem [modified]

Cedric Moonen16-Dec-08 20:20

Cedric Moonen

16-Dec-08 20:20

~~If Name is a plain string, use strlen instead. It is much safer.~~

Note to self: take a morning coffee before answering questions... Sigh | :sigh:

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

modified on Wednesday, December 17, 2008 3:17 AM

Re: using _ultoa_s is creating a problem

L. Madhavan16-Dec-08 21:12

L. Madhavan

16-Dec-08 21:12

strlen returns the current length of the string, not the actual size of the buffer. Moreover, if the buffer is uninitialized, (i.e. no null terminator) the behaviour of strlen is undefined.

Re: using _ultoa_s is creating a problem

Cedric Moonen16-Dec-08 21:16

Cedric Moonen

16-Dec-08 21:16

Oh crap, I forgot to take my coffee this morning Dead | X|

Yes, of course, we need to pass the size of the available buffer, not the size of the string...

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: using _ultoa_s is creating a problem

Naveen16-Dec-08 20:33

Naveen

16-Dec-08 20:33

Malli_S wrote:
Doesn't it ?

Yes

nave

[OpenedFileFinder] [My Blog]

Re: using _ultoa_s is creating a problem

Naveen16-Dec-08 19:37

Naveen

16-Dec-08 19:37

VCProgrammer wrote:
But the problem is sometimes its executing fine but sometimes it just crashes my application....

I dont think this is an issue of _ultoa_s. It can also be an issue in accessing pDir32->Dir [ i ].fileSize variable. So first try to isolate it. Please change the code as follows and find out at which line the crash occurs.

unsigned long lFileSize = pDir32->Dir [ i ].fileSize;
_ultoa_s ( lFileSize ,(char *)Name,sizeof(&Name), 10 );

nave

[OpenedFileFinder] [My Blog]

Re: using _ultoa_s is creating a problem

Malli_S16-Dec-08 19:39

Malli_S

16-Dec-08 19:39

What is the type of Name ? May be sizeof(&Name) giving the problem.

-Malli...!

CreateQueueTimer problem.........??

shaina223116-Dec-08 17:55

shaina2231

16-Dec-08 17:55

while trying to use
CreateTimerQueue();
function i hv still facing following errors
i hv included windows.h and winbase.h files, add kernel32.dll and kernel32.lib files
and also defined macro
#define _WIN32_WINNT 0x0500
but still 2 errors

C:\New Folder\sss\sssDlg.cpp(198) : error C2065: 'CreateTimerQueue' : undeclared identifier
C:\New Folder\sss\sssDlg.cpp(198) : error C2440: '=' : cannot convert from 'int' to 'void *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
plz suggest solution...

Re: CreateQueueTimer problem.........??

shaina223116-Dec-08 18:10

shaina2231

16-Dec-08 18:10

i m using visualStdio2000 ,visual c++6.0

Re: CreateQueueTimer problem.........??

shaina223116-Dec-08 18:56

shaina2231

16-Dec-08 18:56

plz tell me if anyone know that in which headerfile CreateQueueTimer method is declared

Re: CreateQueueTimer problem.........??

shaina223116-Dec-08 19:34

shaina2231

16-Dec-08 19:34

can anyone send me winbase.h containing declaration of CreateTimerQueue() finction ..

Re: CreateQueueTimer problem.........??

Naveen16-Dec-08 19:28

Naveen

16-Dec-08 19:28

shaina2231 wrote:
C:\New Folder\sss\sssDlg.cpp(198) : error C2065: 'CreateTimerQueue' : undeclared identifier

The above function will not be present in the header file that comes along with the visual studio 6. If you want to you this function in visual studio 6, you have to install platform SDK and integrate it with visual studio 6. You can download it freely from XPSP2 PSDK Full Download with Local Install[^]

Optionally you can dynamicaly load this function from the "Kernel32.dll" and call it directly using the LoadLibrary() and GetProcAddress() function.

nave

[OpenedFileFinder] [My Blog]

Re: CreateQueueTimer problem.........??

shaina223116-Dec-08 20:03

shaina2231

16-Dec-08 20:03

thanks naveen using loadlibrary it works ..

Z Order - CPropertySheet on top

john john mackey16-Dec-08 13:12

john john mackey

16-Dec-08 13:12

Hi. I can't seem to find help in MSDN or Studio 2008 regarding this...

I want my modeless CPropertySheet to ALWAYS be on top of its parent window.

The ideal solution would be to have my modeless property sheet only on top of its parent, but I am willing to settle on having my property sheet on top of all windows.

Can anyone help me with setting the Z-order of a modeless CPropertySheet?

Thank you.
John

Re: Z Order - CPropertySheet on top

Mark Salsbery16-Dec-08 14:15

Mark Salsbery

16-Dec-08 14:15

You could use SetWindowPos()[^].

Something like:

pPropSheet->SetWindowPos(pOwnerWnd, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Z Order - CPropertySheet on top [modified]

john john mackey18-Dec-08 7:07

john john mackey

18-Dec-08 7:07

I tried this, as is, but still notice my unwanted results.

The parent of my CPropertySheet is a Frame window object. I create my modeless property sheet as:

m_pSettingsConsole->Create(NULL, WS_SYSMENU | WS_POPUP | WS_CAPTION | DS_MODALFRAME | DS_CONTEXTHELP, WS_EX_DLGMODALFRAME);
m_pSettingsConsole->SetWindowPos(this,0,0,0,0,SWP_NOMOVE | SWP_NOSIZE);

Is there more to set the Z order? BringWindowToTop? Keep it on top?

confused Confused | :confused:

Revised My error was in my Create argument, the parent window should be my Frame window object, not the desktop (NULL)...

m_pSettingsConsole->Create( this , WS_SYSMENU | WS_POPUP | WS_CAPTION | DS_MODALFRAME | DS_CONTEXTHELP, WS_EX_DLGMODALFRAME);
m_pSettingsConsole->SetWindowPos(this,0,0,0,0,SWP_NOMOVE | SWP_NOSIZE);

modified on Thursday, December 18, 2008 2:31 PM

ATL control background color

Kenny Adorisio16-Dec-08 6:36

Kenny Adorisio

16-Dec-08 6:36

Hello. I'm having an issue with the background color of an ATL control placed on a tab page. The windows xp color theme for a tab page is a white fading effect. When the control is created on the tab page it uses its own background color (obviously), which is the classic buttonface color. Does anyone know how to make the background color transparent so it appears as though the controls on the ATL object are on the tab page (with the white fading background)? I've done lots of searching and can't seem to find an answer that has worked or applies to my situation. Also, the ATL object that I'm using is inherited from CWinApp, and I do not have a class inherited from CDialog. Let me know if a class inherited from CDialog needs to be created. This is part of a large program I am modifying to have an XP look and feel. I'm using Visual Studio 6.0. Thanks in advance.

Kenny

Re: ATL control background color

Randor 17-Dec-08 0:29

Randor

17-Dec-08 0:29

Have you tried painting the ATL control background with a hollow brush? You should recieve a WM_CTLCOLORSTATIC message and can set the brush there. If the control is compiled as an OCX then you may need to handle the OCM_CTLCOLORSTATIC message instead.

(HBRUSH)GetStockObject(HOLLOW_BRUSH);

Best Wishes,
-David Delaune

GetDlgItem in Dialog class

pratap198016-Dec-08 6:24

pratap1980

16-Dec-08 6:24

Hi All,

Can i use the GetDlgItem in the dialog class with ::GetDlgItem(controlid) to get a handle to a control?

Is it going to work?

Thankyou

Re: GetDlgItem in Dialog class

Eytukan16-Dec-08 6:34

Eytukan

16-Dec-08 6:34

Will you drop it if I say "No" ? Why not you try it with a sample? Or you dont trust MSDN?

OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus

Best wishes to Rexx[^]

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