C / C++ / MFC Discussion Boards

dan o13-Jan-03 2:29

13-Jan-03 2:29

hi,

I have a formview (in splitter window)

after OnInitialUpdate()

i do a load bitmap, but the size of bitmap is greater than the form
i like to draw scrollbars of the formview

m_static_picture.GetWindowRect(&rect); //beholder of bitmap
GetWindowRect(&rectWindow);
if(rectWindow.bottom < rect.bottom)
{
//to small a scroll bar is needed
int cx = rectWindow.Width();
int cy = rectWindow.Height();
int iDif = rect.bottom - rectWindow.bottom;
cy += iDif;

ScreenToClient(&rectWindow);
SetWindowPos(this, 0, 0, cx, cy, SWP_NOMOVE);
}

i wonder why this code is not working (i see no scollbar)

even if after adding

SCROLLINFO si;
GetScrollInfo(SB_VERT,&si);
si.nMin = 0;
si.nPage = rectWindow.Height();
si.nMax = cy;
si.nPos = 0;
si.nTrackPos = 0;
si.fMask = SIF_ALL;
si.cbSize = sizeof(si);
SetScrollInfo(SB_VERT, &si, TRUE);
ShowScrollBar(SB_VERT, TRUE);

give no result,

any ideas??
dan oudijk
Confused | :confused:

Re: scollbar question

lucy13-Jan-03 6:57

lucy

13-Jan-03 6:57

after you loaded your bmp, if the image dimesion of this bmp is imageWidth x imageHeight, try the following code:

CSize sizeTotal;
sizeTotal.cx = imageWidth;
sizeTotal.cy = imageHeight;
SetScrollSizes(MM_TEXT, sizeTotal);

Rich Edit Control Bug??

RChin13-Jan-03 0:40

RChin

13-Jan-03 0:40

Hola,
I'm wondering whether any of you gurus out there have ever come across this problem before.
Our company develops and have been using this data processing software for a while now. However, last week when a sister company tried to run the software, it bombed.
After much testing, we found that the bug was due to the Rich Edit control embeded in a particular view.

Now this is the weired bit. We have used the rich edit control (via loading the RichEd32.dll) with success, but this bug occurs when we try to use the control via the Rich Edit control provided by Visual Studio.
It ran fine on our side, but crashes on there machine! Yes I know of the 'works on my system' headache, but this really is puzzling! :<

Anyone know of any problems or specific requirements why this would happen specifically to the riched control placed on the dialog via the resource editor?

Using VC6. Compiled on Win2k.

one ring to rule them all

Re: Rich Edit Control Bug??

AlexO13-Jan-03 3:28

AlexO

13-Jan-03 3:28

I am not sure what you mean "Rich Edit control provided by Visual Studio", it is still RichEd32.dll is not? "Works for me" usually solved using depends.exe and oleview.exe; make sure that whatever your program depends on is installed on the user's computer. My guess is you just switched to VC7 and forgot to ship new dlls for MFC, CRT, and STL.

format of jar file

includeh1013-Jan-03 0:00

includeh10

13-Jan-03 0:00

i need to know format of jar file.

i.e. zip file is in a set of structs: local_file_head, central_file_head etc.

jar file should be in a set of structs also, but i can't find any info about it.

any hints and links is wanderful.

thx in advance.

includeh10

Re: format of jar file

Jon Hulatt13-Jan-03 0:56

Jon Hulatt

13-Jan-03 0:56

I'd start at java.sun.com . Why do you need to know the format? can't you just use sun's jar tool to unpack it.

#include <beer.h>

Re: format of jar file

includeh1013-Jan-03 2:40

includeh10

13-Jan-03 2:40

i am a c++ programmer, not just a jar file user.
i need jar info dynamically in coding.

anyway, thx.

includeh10

Re: format of jar file

User 665813-Jan-03 2:44

User 6658

13-Jan-03 2:44

Try this link:
http://www.wotsit.org/download.asp?f=jar

regards

modified 12-Sep-18 21:01pm.

Re: format of jar file

includeh1013-Jan-03 3:17

includeh10

13-Jan-03 3:17

i viewed the site few hrs ago, it is too simple.
hope get more links.
thx

includeh10

Re: format of jar file

Joel Lucsy13-Jan-03 10:29

Joel Lucsy

13-Jan-03 10:29

I've been able to rename a .jar file to .zip and all my zip routines work just great on it. I think the only thing different is the presence of some kind of manifest file, but I'm not certain.

Joel Lucsy (jjlucsy@concentric.net)

Internationalization

Aswin Kumar12-Jan-03 23:57

Aswin Kumar

12-Jan-03 23:57

I've copied the resource for making the project work both in english and german language.It worked fine in DEBUG version but in RELEASE version its giving application error and it gets closed.

Re: Internationalization

Ted Ferenc13-Jan-03 1:25

Ted Ferenc

13-Jan-03 1:25

Is this a question concerning my article:-
http://www.codeproject.com/cpp/mult_lang_support.asp[^]

If so can you post on that page and I will try and help you

If I have seen further it is by standing on the shoulders of Giants. - Isaac Newton 1676

Re: Internationalization

Aswin Kumar13-Jan-03 17:50

Aswin Kumar

13-Jan-03 17:50

I saw ur article.It was nice.But its something similar to that.I'm following doc-view architecture for my project.When i change the language settings the view needs to be updated with the language settings......But if i refresh the view its not happening and error is raised in RELEASE version.

Re: Internationalization

Ted Ferenc14-Jan-03 21:31

Ted Ferenc

14-Jan-03 21:31

I would say it is unlikely any internationalisation code would raise an error, unless of course the resource IDs are not consistent between languages, possibly an ID for a control has been swopped for a string resource.

As a test I would suggest you copy your default language resources to a new language, i.e. English to French, but do NOT change any of the resouces. Run a test changing the language to French is you don't get an exception then check your resource IDs. If you still get an exception then the error is elsewhere.

Hope this helps. Ahh I do remember a bug in Visual C++ I think it was V 6.0 but fixed on sp3 or sp4, but that did not cause an exception, just the language would not change.

If I have seen further it is by standing on the shoulders of Giants. - Isaac Newton 1676

IJL - where to get it ?

s98769012-Jan-03 23:20

s987690

12-Jan-03 23:20

Intel is no longer offering its IJL jpeg library.
Where i could download it ? Anyone has it, could send it to me ? Smile | :)

Re: IJL - where to get it ?

xxhimanshu13-Jan-03 0:23

xxhimanshu

13-Jan-03 0:23

search for IJL in google and you will see many options where you can find IJL. I guess it is also available at intel's site. all the best.

cheers

Himanshu

Remote-Access to another PC

Harald Diel12-Jan-03 22:13

Harald Diel

12-Jan-03 22:13

How can I write a Program in Visual C, that takes over the Desktop and Mouse-Functions of another
Windows-NT PC in a LAN/WAN (like SMS, or pcAnywhere it does) ?.
Is there an API available, or an example ? Smile | :)

Who knows the answer ??

Re: Remote-Access to another PC

benjymous12-Jan-03 23:41

benjymous

12-Jan-03 23:41

Well, I'm hoping you're thinking of remote administration, rather than nasty hacker stuff, but the source code to VNC is freely available http://www.realvnc.com[^] though, tbh, if you just want a free and simple remote admin/control system then I don't see why you'd need to actually modify VNC at all - it works brilliantly as it is Smile | :)

--
Help me! I'm turning into a grapefruit!

warning and memory leak!

r i s h a b h s12-Jan-03 20:29

r i s h a b h s

12-Jan-03 20:29

dear all,

i get a warning

D:\Schd\Config.cpp(117) : warning C4172: returning address of local variable or temporary

when i compile this code:-

char *CConfig::InputFilePath ()
{
char *inp;
** inp = new char[MAXCHARS];
int i= GetPrivateProfileString("Paths", "inputfile", "" ,inp, MAXCHARS, IniPath);
CString path(inp);
char filename[11];
int ch = 92;
unsigned int result;
char *pdest;
char iPath[MAXCHARS];
try
{
if ( (path == "") || CConfig::DoesDirectoryExist (inp) == false )
{
path = "";
strcpy(iPath,"");
return iPath;
}
pdest = strrchr( path, ch );
result = pdest - path + 1;
if ( result == strlen(path) )
{
strcpy(filename,"Input.con");
}
else
{
strcpy(filename,"\\Input.con");
}
strcpy(inp,path);
strcpy(inp, strncat( inp, filename,strlen(filename)));
}
catch(...)
{
path = "";
strcpy(iPath,"");
return iPath;
/*strcpy(filename,"\\Input.con");
strcpy(inp, strncat(_getcwd( buffer, _MAX_PATH), filename,strlen(filename)));*/
}
strcpy(iPath,inp);
delete [] inp;
return iPath;
}

also sometimes i get warning :-

detected memory leaks,
Object dump complete,

at location ** in the code

can anyone suggest some solutions! Confused | :confused:

thanx,

Re: warning and memory leak!

Joaquín M López Muñoz12-Jan-03 21:23

Joaquín M López Muñoz

12-Jan-03 21:23

char *CConfig::InputFilePath ()
{
...
char iPath[MAXCHARS];
...
return iPath;
}

The problem is very accurately described by the warning you're having. iPath gets destroyed as soon as InputFilePath exits, so returning its address is illegal. The simplest solution, probably, is to return a CString:

CString CConfig::InputFilePath ()
{
...
char iPath[MAXCHARS];
...
return iPath; // constructs a CString on the fly from iPath
}

Even if this fix works, I'd strongly suggest that you try to fully understand why your problem was happening, since it is a common error in beginners and something similar could shoot you in the future when least expected.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: warning and memory leak!

r i s h a b h s12-Jan-03 21:43

r i s h a b h s

12-Jan-03 21:43

thanx for the TIP Joaquín!
i'll keep it in mind and'll try to stick to it!

but is there anyother way to get rid if the specified scenario!

also can u help me with the memory leak while i'm deleting the pointer inp.
Confused | :confused:

thanx a ton! Rose | [Rose]

Re: warning and memory leak!

Joaquín M López Muñoz12-Jan-03 21:50

Joaquín M López Muñoz

12-Jan-03 21:50

also can u help me with the memory leak while i'm deleting the pointer inp.

** inp = new char[MAXCHARS];

should be

inp = new char[MAXCHARS];

I'm surprised that the code even compiled Confused | :confused:

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: warning and memory leak!

r i s h a b h s12-Jan-03 21:58

r i s h a b h s

12-Jan-03 21:58

sorry, but u misread my first thread.

** was to imply that THIS line of code gives memory leak warning! (** acted like a label in my thread, thats it!)

rishabhs

can any one help me with the memory leak

r i s h a b h s12-Jan-03 23:16

r i s h a b h s

12-Jan-03 23:16

dear all,
the code (in Bold) generates a memory leak and i get a warning, Object dump complete

char *CConfig::InputFilePath ()
{
char *inp;
inp = new char[MAXCHARS]; /*??Memory Leak, but it is deleted later in the code */
int i= GetPrivateProfileString("Paths", "inputfile", "" ,inp, MAXCHARS, IniPath);
CString path(inp);
char filename[11];
int ch = 92;
unsigned int result;
char *pdest;
char iPath[MAXCHARS];
try
{
if ( (path == "") || CConfig::DoesDirectoryExist (inp) == false )
{
path = "";
strcpy(iPath,"");
return iPath;
}
pdest = strrchr( path, ch );
result = pdest - path + 1;
if ( result == strlen(path) )
{
strcpy(filename,"Input.con");
}
else
{
strcpy(filename,"\\Input.con");
}
strcpy(inp,path);
strcpy(inp, strncat( inp, filename,strlen(filename)));
}
catch(...)
{
path = "";
strcpy(iPath,"");
return iPath;
}
strcpy(iPath,inp);
delete [] inp;
return iPath;
}

can someone tell me why this leak is occurring and how to prevent it!
Confused | :confused:

thanx

Re: can any one help me with the memory leak

Alvaro Mendez13-Jan-03 4:34

Alvaro Mendez

13-Jan-03 4:34

You need to look at the possibility of the function exiting before delete is called. From your code it looks like if an exception is thrown that's what happens; you catch it, and then return without freeing inp.

You may want to consider not allocating inp dynamically since it's always got a constant size (MAXCHARS).

char inp[MAXCHARS];

Another alternative is to dynamically allocate it, but on the stack using alloca:

char* inp = (char*)alloca(MAXCHARS);

Then you don't need to worry about explicitly freeing it since it will happen automatically.

Regards,
Alvaro

All you need in this life is ignorance and confidence, and then success is sure. -- Mark Twain

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