C / C++ / MFC

Re: Regarding the value that appears in the first two bytes of a bmp image

17-May-05 2:42

Hello,

It has something to do with the way data is stored in the memory of the computer. This problem is also known as the NUXI problem.

Read this[^] for more information about the problem.

I also got the blogging virus..[^]

C^hris L^osinger17-May-05 7:17

C^hris L^osinger

17-May-05 7:17

4d42(hex) = 19778(decimal)

Cleek | Image Toolkits | Thumbnail maker

#define ??

Bob Stanneveld17-May-05 2:18

17-May-05 2:18

Hello,

I have the following code:

<br />
#define A_THING(ARG) \<br />
#  define ANOTHER_THING const ARG \<br />
// more defines<br />

When I compile the code, I get the following error: "error C2162: expected macro formal parameter"

The following code does not produce errors:

<br />
#define A_THING() \<br />
#  define ANOTHER_THING const ARG<br />

The most weird part is, that I don't even use the first macro in the code. If I use it, I get the same errors...

I also got the blogging virus..[^]

toxcct17-May-05 2:21

17-May-05 2:21

cool...

what is the question ? WTF | :WTF:

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

Bob Stanneveld17-May-05 2:23

17-May-05 2:23

Wow that was fast, I pressed "TAB" and "ENTER" a little bit to fast after each other. I completed the post now... Laugh | :laugh:

I also got the blogging virus..[^]

ThatsAlok17-May-05 2:23

ThatsAlok

17-May-05 2:23

Bob Stanneveld wrote:
I have the following code:

#define A_THING(ARG)

Then Where is the Problem Bob!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Bob Stanneveld17-May-05 2:24

17-May-05 2:24

Hello,

The problem was that I accidently pressed "TAB" before I pressed "ENTER". I completed the message now.

I also got the blogging virus..[^]

Almost solved!

Bob Stanneveld17-May-05 2:59

17-May-05 2:59

I have found the source of my problem. This is that the '#' symbol is used inside macros to make a string of an argument. For example:

<br />
#define TO_STRING(arg) #arg<br />
<br />
// somewhere in code<br />
TO_STRING(This is a string) // becomes "This is a string"<br />

So the compiler looks for an argument named 'define', but cannot find it, thus issuing an error. Is there any way that I can work around this problem?

Thanks in advance

I also got the blogging virus..[^]

User script or other technique?

Tim Smith17-May-05 3:20

Tim Smith

17-May-05 3:20

Don't do the line continuations. To the preprocessor, it sees:

#define A_THING(ARG) # define ANOTHER_THING const ARG \....

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

lynchspawn17-May-05 2:14

lynchspawn

17-May-05 2:14

I'm working on a program that I'd like to be open to customization by the user. It will generate messages (to be sent over Ethernet or serial ports) and allow the user to specify a set of rules to follow when doing so. I'd like the user to be able to create a list of steps to take and also allow the user to create loops and test conditions (if, else, ...).

For now, I'm hardcoding task types but it would be nice if I could allow the user to write a script that my software could understand and follow instead of forcing the user to use my pre-built task types.

I know it's not going to be easy or quick but I'd still like to look into it further. Does anyone know where I might find information on doing something like this? Would it be possible to use an existing scripting language (PERL or other)?

Thanks for any info you might have on this.

Re: User script or other technique?

Blake Miller17-May-05 5:05

Blake Miller

17-May-05 5:05

The older "Visual BASIC for Applications" possibly Unsure | :~

Or try this msdn.microsoft.com/scripting

Pls help

lgstef17-May-05 2:13

lgstef

17-May-05 2:13

I want to take the color of any pixel on the screen.
I want to simulate mouse click at any position at the screen.

I don't have idea how to do this Frown | :(

. and I'll appreciate any idea.
Thanks in advance.

Re: Pls help

ThatsAlok17-May-05 2:20

ThatsAlok

17-May-05 2:20

isn't this help CDC::GetPixel(..)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Use SetAccountInformation()

bosfan17-May-05 2:01

bosfan

17-May-05 2:01

Hi Community,
how can i use SetAccountInformation(L"",NULL); in C++ when i create a new Task with ITaskSchedule, when i create new WorkItem wit Username and Userpassword then the task is created ok, but if i want to create a Task without a Username and Password, with Systemaccount, the Task ist created but newer started, i can't start them manualy to? What is the problem?
here litle code:

<br />
if(m_sPassword == "")<br />
{<br />
hr = pITask->SetAccountInformation(L"",NULL);// no errors, but the new task starts never! :(<br />
}<br />
else<br />
{<br />
// this part works ok, with Username and Userpassword<br />
hr = pITask->SetAccountInformation(m_sUserName.AllocSysString(),m_sPassword.AllocSysString());<br />
}<br />
pITask->QueryInterface(IID_IPersistFile,(void **)&pIPersistFile);<br />
pIPersistFile->Save(NULL,TRUE);<br />
<br />

What ist the error here? Confused | :confused:

regards
mirsad

get sub-directory count ??

jdgordy17-May-05 1:47

jdgordy

17-May-05 1:47

hey all,
i need to know how many sub-directories are under a certain direcotry (could be a hard disk)...
at the moment im using the following code and just wlaking the directory tree but its pretty slow.. can some1 help me out and speed it up (or better yet, tell me the win32 api call i dont know abnout which does this all for me )

<br />
int GetFileFolderCount(char* folder, int recurse, char *ignoreFolders, int *folders)<br />
{<br />
	WIN32_FIND_DATA FindFileData;<br />
	HANDLE hFind;<br />
	int fileFound = 1;<br />
	int len = strlen(folder)+5;<br />
	char *searchPath = (char*)malloc(len);<br />
	if (!searchPath) return 0;<br />
	if (folder[strlen(folder)-1]=='\\')<br />
		folder[strlen(folder)-1] = '\0';<br />
	_snprintf(searchPath,len ,"%s\\*.*",folder);<br />
	hFind = FindFirstFile(searchPath, &FindFileData);<br />
	if (hFind == INVALID_HANDLE_VALUE) return 0;<br />
	<br />
	while (fileFound && continueSearch)<br />
	{<br />
		if (recurse && FindFileData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)<br />
		{<br />
			char *newSearch;<br />
			if (!strcmp(FindFileData.cFileName,".") || !strcmp(FindFileData.cFileName,".."))<br />
			{<br />
				fileFound = FindNextFile(hFind,&FindFileData);<br />
				continue;<br />
			}<br />
			len = strlen(folder)+strlen(FindFileData.cFileName)+5;<br />
			newSearch = (char*)malloc(len);<br />
			if (!newSearch) return 0;<br />
			_snprintf(newSearch,len,"%s\\%s\0",folder,FindFileData.cFileName);<br />
			if (!ignorefolder(newSearch,ignoreFolders))<br />
			{<br />
				(*folders)++;<br />
				GetFileFolderCount(newSearch,recurse,ignoreFolders  ,folders);<br />
			}<br />
			free(newSearch);<br />
		}<br />
		else if (!recurse && FindFileData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)<br />
		{<br />
			fileFound = FindNextFile(hFind,&FindFileData);<br />
			continue;	<br />
		}<br />
		fileFound = FindNextFile(hFind,&FindFileData);<br />
	}<br />
	FindClose(hFind);<br />
	free(searchPath);<br />
	return 1;<br />
}<br />

thanx

Re: get sub-directory count ??

rocky_pulley17-May-05 3:38

rocky_pulley

17-May-05 3:38

that is exactly how I would do it, I don't see anything you can do to speed it up. There is no win32 api to do directly what you want.

-- Rocky Dean Pulley

checking if a file exist or not

toxcct17-May-05 1:43

17-May-05 1:43

hello everybody,

i know, it's been few times i've asked this already, but as i didn't took notes and apply the answers, i cannot find them anymore Unsure | :~

...

the only thing i remember is that Mr Alok did answer usefully my request (that was a function like FilePathExists(), but i can't find it. was it really that ?).

so, the question is :
i'd like to check (when i get a File path and name throw GetSaveFileName() - MFC) to check whether the file really exist or not.
As precision, i am working both on VC++ + and .NET 2003, and still MFC.

thanks in advance.

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

Jack Puppy17-May-05 1:49

Jack Puppy

17-May-05 1:49

Shell function is PathFileExists

MFC function is CFile::GetStatus

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

toxcct17-May-05 1:51

17-May-05 1:51

Jack Squirrel wrote:
Shell function is PathFileExists

argglll, here is why i could find it Big Grin | :-D

very thank you jack

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

ThatsAlok17-May-05 2:10

ThatsAlok

17-May-05 2:10

What About Runtime Function

_access

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

toxcct17-May-05 2:13

17-May-05 2:13

:s i'm not really enjoying programming that way... but that's only my feeling Big Grin | :-D

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

ThatsAlok17-May-05 2:20

ThatsAlok

17-May-05 2:20

toxcct wrote:
that's only my feeling

You still remember that Cool | :cool:

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta