C / C++ / MFC Discussion Boards

Re: How to hide program on execution

lonely_life1-Sep-04 19:01

lonely_life

1-Sep-04 19:01

I am not sure whether this is what u want
http://www.codeproject.com/system/xyntservice.asp

how:Name function after API name??

happycpp1-Sep-04 11:35

happycpp

1-Sep-04 11:35

hi everyone..
I'm working on a project to make a dll that contains some functions...I want to name some functions the same name that some APIs do..
e.g. I want to make my own "FormatMessage" function in my dll...

Re: how:Name function after API name??

Christian Graus1-Sep-04 11:56

Christian Graus

1-Sep-04 11:56

Put them in a namespace. It's still a terrible idea.

Christian

I have drunk the cool-aid and found it wan and bitter. - Chris Maunder

Re: how:Name function after API name??

happycpp3-Sep-04 6:09

happycpp

3-Sep-04 6:09

I actually don't know how to do that could you write a simple function using this way...

Re: how:Name function after API name??

Christian Graus5-Sep-04 10:12

Christian Graus

5-Sep-04 10:12

namespace ThisIsAHorribleIdea
{
void MyAPIFunction()
{
}
}

Now you need to call it like this : ThisIsAHorribleIdea::MyhAPIFunction();

And if you don't know what a namespace is, you should buy a beginners book on C++ and read it before you go any further.

Christian

I have drunk the cool-aid and found it wan and bitter. - Chris Maunder

ansi c: gets dangerous

kfaday1-Sep-04 10:49

kfaday

1-Sep-04 10:49

Hi, i'm doing an ansi c program, compiling with gcc. I get a warning that the gets function is dangerous. Everything works fine, but i don't want to get that warning.

char *Comando=0;
Comando=(char*)malloc(150*sizeof(char));

gets(Comando);

I can't (or don't know how to) use scanf as if i type a string with spaces scanf only saves the characters until the first space.

which function could i use apart from gets (and it must be ansi c )?
thanks!

Re: ansi c: gets dangerous

Stefan Pedersen1-Sep-04 14:13

Stefan Pedersen

1-Sep-04 14:13

The problem with gets() is that is doesn't consider the size of the destination buffer. In your case just enter more that 150 characters and PRESTO! Insta-crash(tm). May I recomand fgets() instead?

And if the paths that I have followed/have tread against the flow/there is no need for sorrow
I am coming home
Return, Crüxshadows

Re: ansi c: gets dangerous

Henry miller2-Sep-04 3:47

Henry miller

2-Sep-04 3:47

That warning is telling you that it is IMPOSSIBLE to use gets correctly! If your program uses gets I can crash it. Any professor who sees gets in code should automaticly give the student an F!

instead you should use fgets, which can replace your use of gets like this:

fgets(Comando,150,STDIN);

See, it is easy to use fgets, and I can no longer crash your program just be doing something stupid.

Re: ansi c: gets dangerous

kfaday3-Sep-04 16:07

kfaday

3-Sep-04 16:07

thanks, i used fgets

Re: ansi c: gets dangerous

James R. Twine2-Sep-04 10:24

James R. Twine

2-Sep-04 10:24

   There is an extension to the scanf(...) function that allows to scan non-space-delimited strings. I do not know if it is available in GCC's libraries...

   It works like this: to scan a string that is terminated by a semicolon, your format specifier would be: %[^;]. For example, if you wanted to scan this string:

C:12345;B:09876

   And extract the two numeric values into two strings (12345 and 09876), you would write something like:

    char caStringBuf1[ 64 + 1 ];<br />
    char caStringBuf2[ 64 + 1 ];<br />
<br />
    sscanf( "C:12345;B:09876","C:%[^;];B:%s", <br />
          caStringBuf1, caStringBuf2 );<br />
    caStringBuf1[ 64 ] = '\0';<br />
    caStringBuf2[ 64 ] = '\0';

You would want to limit the input test somehow, of course and add some validation code, but that would scan the string correctly.

Peace!

-=- James
Tip for inexperienced drivers: "Professional Driver on Closed Course" does not mean "your Dumb Ass on a Public Road"!
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How do I change the Icon.

nigma_x1-Sep-04 10:48

nigma_x

1-Sep-04 10:48

I'm using Visual C++.net 2002 with MFC's. Created the project then built it. I changed the Icon after the build with the Icon editor. The problem is now only the about box shows the change. The .exe file and SDI dialog shows the MFC icon. What setting do I change to have my icon take effect?

Re: How do I change the Icon.

Graham Bradshaw1-Sep-04 12:22

Graham Bradshaw

1-Sep-04 12:22

An icon can have multiple colour depths and sizes in one .ico file. It sounds to me like you are editting the 32x32 icon, which is displayed in the about box, but not editting the 16x16 icon.

If you view large icons in Explorer, do you see your changed icon for the exe?

Re: How do I change the Icon.

nigma_x2-Sep-04 3:44

nigma_x

2-Sep-04 3:44

Thanks, did not know that there where different sizes for the Icon. Which each had to be changed. Just thought C++ changed the size for you. LOL. Well that did it and I know have my own crappy but orginal icon in my program. Thanks again.

WM_CAPTURECHANGED, lParam=0

cowwoc20021-Sep-04 10:46

cowwoc2002

1-Sep-04 10:46

Hi,

I am getting WM_CAPTURECHANGED messages with lParam=0 and then my WindowProc stops getting messages (because my focus has disappeared). How is this legal? lParam is supposed to contain the HWND of the window that stole focus away from my WindowProc but it is zero which is an illegal value. How do I find out who has taken focus? Is this documented anywhere?

Thank you,
Gili

Re: WM_CAPTURECHANGED, lParam=0

darkbyte1-Sep-04 13:17

darkbyte

1-Sep-04 13:17

Don't know if this is documented somwhere but this sounds like Screen Saver attempt at getting the focus before actually going in Screen Saver mode.

Re: WM_CAPTURECHANGED, lParam=0

Anonymous1-Sep-04 17:17

Anonymous

1-Sep-04 17:17

This is actually what you get when you click on the desktop and drag a rectangle. So, to answer your previous post, it isn't some sort of screensaver... but something is taking the focus away from the desktop. I will keep on looking.

Re: WM_CAPTURECHANGED, lParam=0

Ryan Binns1-Sep-04 18:29

Ryan Binns

1-Sep-04 18:29

I think you're getting focus and mouse capture confused. They are not the same thing. To check for a focus change, you'll need to handle WM_KILLFOCUS, not WM_CAPTURECHANGED.

Hope this helps,

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: WM_CAPTURECHANGED, lParam=0

cowwoc20021-Sep-04 18:50

cowwoc2002

1-Sep-04 18:50

Sorry, you are right. I believe what is going on is that upon the user clicking and dragging inside the window, WM_CAPTURECHANGED is received indicating that the mouse capture has been released (that's probably what lParam=0 means).

The problem, then, is that WM_MOUSEMOVE messages are being posted on the event-queue but my WindowProc never receives them. I am subclassing some other window. My guess is that the window calls GetMessage(), sees WM_MOUSEMOVE, and handles it internally without passing it on to the WindowProc. This poses a problem for me because I absolutely must subclass WM_MOUSEMOVE. Any ideas?

Gili

Re: WM_CAPTURECHANGED, lParam=0

Ryan Binns1-Sep-04 21:32

Ryan Binns

1-Sep-04 21:32

cowwoc2002 wrote:
My guess is that the window calls GetMessage(), sees WM_MOUSEMOVE, and handles it internally without passing it on to the WindowProc.

That would be my guess as well. One way to get around this is to install a WH_GETMESSAGE hook, which will get called whenever a message is retrieved from the message queue.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Subtitles ...

Andre Massada1-Sep-04 10:44

Andre Massada

1-Sep-04 10:44

Any hints about implementing subtitles in an video player(VMR9 or overlay) ?
Any suggestion is welcomed ...

Add event to Controlbar button

TNguyen1-Sep-04 8:35

TNguyen

1-Sep-04 8:35

Hi everyone.
I am using Visual Studio, visual C++ 7.0 and having problem adding an event handler to a button in controlbar.
I used the editor to add abutton, gave it an ID but I could not not find ways to add a function for that button. I was able to do that in version 6.0.
Please help. Cry | :((

Re: Add event to Controlbar button

Cliff Hatch20-Jan-05 8:54

Cliff Hatch

20-Jan-05 8:54

TNguyen

I was browsing the board to see if anyone had found a solution to this problem, and came across your post. I imagine you have found a way round this by now, but I thought I would reply anyway:

I can't believe that the designers meant to make the task of connecting an event handler to a button more difficult than it used to be. I assume it was an unintended side effect of trying to produce the unified .NET programming interface (which regretably seems to have involved discarding MFC's ClassWizard) - but what continues to puzzle me is that this has not been subject to a patch or improvement in later releases.

I don't have an anwer, but I do have a workaround. Build a MENU item first, attach the handlers you want to it, then build a toolbar button with the same ID (and it will share the same event handlers).

If you right click on menu items and select the "add event handler" option, the Event Handler Wizard appears and gives you the option to create or edit handlers for COMMAND and UPDATE_COMMAND_UI messages.

The rule seems to be, right click on the thing you want to create a handler for and the Event Handler Wizard will provide pretty much the same functionality as MFC's ClassWizard - except that it doesn't work for toolbar buttons because right clicking doesn't give you the option - seems nuts to me!

Please let me know if you have found a better way in the meantime.

Best Regards

Cliff

Window Service Parameters from INI file

aman20061-Sep-04 8:08

aman2006

1-Sep-04 8:08

hi
I wrote a service in which i want to pass some parameters from INI file but when i give the path as .\\TibcoTCPServer.ini it does not work but if i hard code the path it works fine. Can any body help me how can i pass the ini file path so that service will pick the parameters.

Thanks
Shailesh

Re: Window Service Parameters from INI file

David Crow1-Sep-04 8:31

David Crow

1-Sep-04 8:31

.\\TibcoTCPServer.ini is a relative path, which means it's relative to whatever happens to be the current working directory at the moment. Use GetModuleFileName(NULL, ...) instead to get the application's fully-qualified path, then replace the filename with TibcoTCPServer.ini.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Window Service Parameters from INI file

aman20061-Sep-04 8:44

aman2006

1-Sep-04 8:44

if i use GetModuleFinename(NULL..) I Get the Memory could not be read error. My Code is as

BOOL FillParams()
{

CFileFind fileFinder;
CIniReader m_IniFile;

TCHAR Buffer[BUFSIZE];
DWORD dwRet,nSize;
CString error;

dwRet = GetModuleFileName(NULL,Buffer,nSize);

if( dwRet == 0 )
{
error.Format("Failed GetCurrentDirectory %d",GetLastError());
WriteToLog((LPSTR)(LPCTSTR)error);
return 0;
}

WriteToLog(Buffer);
// Here i am changing the path..
}

But It is failing at GetModuleFineName function or crashing.

Any Suggestion..

Thanks
Shailesh

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