Re: comma operator - C / C++ / MFC Discussion Boards

Dominik Reichl19-Aug-03 21:30

19-Aug-03 21:30

Hello,

how can one detect if file and/or printer sharing is enabled?

I've found a key in the registry but I assume there is also a Windows API function?

Confused | :confused:

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

Re: File and printer sharing?

vcplusplus19-Aug-03 22:05

vcplusplus

19-Aug-03 22:05

Check out this web site
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wnet/wnet/using_windows_networking.asp

Property Pages

Kamesh19-Aug-03 19:52

Kamesh

19-Aug-03 19:52

Hi I have some property pages, and have to activate apply button of property sheet when any change in the
proterty page controls. To this I've call set modify flag to TRUE,
I have numerous edit, check boxs in my proerty pages, Is there any way to set the flag, without
writing EN_CHANGE for each and every control??
Thanks in Advance,

--KK

exe with parameters..

xxhimanshu19-Aug-03 18:22

xxhimanshu

19-Aug-03 18:22

hi all,
can anyone show me some pointers or ideas or tutorials on exe's which takes some parameters.. to execute.. i want my exe to run with some parameters supplied to it..please help..thanks a lot in advance..

Himanshu

Re: exe with parameters..

Dominik Reichl19-Aug-03 20:50

Dominik Reichl

19-Aug-03 20:50

Depends. If you have a console application with "main" you can just parse all argc elements in the argv array.

If you write a windows executable you can parse the LPSTR lpCmdLine parameter in WinMain.

If you don't have access to the WinMain function you can use the API function LPTSTR GetCommandLine(VOID) to get a pointer to the parameter string.

Or you can use this class: http://www.codeproject.com/cpp/cmdlineparser.asp[^]

Hope that helps Big Grin | :-D

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

suggestions plzzz..

xxhimanshu19-Aug-03 18:14

xxhimanshu

19-Aug-03 18:14

Dear all,
I have a big problem..I want to track IE and get all the addresses and open HTML dialogs based on that URL.. can anyone suggest me what path to follow..as i dont want the time lapse etc..as soon as IE address bar changes the URL the same URL should be used to open a new HTML dialog.. i need it to be done..Please help me out..
thanks a lot in advance..

Himanshu

comma operator

Marissa18219-Aug-03 16:38

Marissa182

19-Aug-03 16:38

how come the comma operator isnt used more often i was able to write a whole function using 1 semi color at the end so how come people dont use the commas?
is there a performance reason or somethting?

Re: comma operator

Dave Bryant19-Aug-03 16:44

Dave Bryant

19-Aug-03 16:44

Mainly because it makes it a lot harder to see what is going if the comma operator is used for anything more complicated than a fairly trivial statement. If you write a complex function in one line using the comma operator, and then come back to it 6 months or a year later, it would be considerably more difficult to understand what is going on, than if it were written clearly in multiple statements.

It is mainly useful in contexts where only a single statement is allowed - for example, in the increment statement of a for loop.

for ( int i = 0, j = 10 ; i < nCount ; ++i, --j ) {
// ...
}

Dave
http://www.cloudsofheaven.org

Re: comma operator

Maxwell Chen19-Aug-03 17:06

Maxwell Chen

19-Aug-03 17:06

Comma is used heavily in our code... while you declaring functions. For example:

void Foo(int iNumber<font size=7 face="Times New Roman">,</font> bool bFlag);
BOOL Move(HWND hWnd<font size=7 face="Times New Roman">,</font> LONG x<font size=7 face="Times New Roman">,</font> LONG y<font size=7 face="Times New Roman">,</font> ULONG cx<font size=7 face="Times New Roman">,</font> ULONG cy);

;P;P

BuggyMax

Re: comma operator

Marissa18219-Aug-03 17:09

Marissa182

19-Aug-03 17:09

im talking about where semi colons are used
like this

void main() {
function(),
function2(),
function3();
}

Re: comma operator

Maxwell Chen20-Aug-03 16:01

Maxwell Chen

20-Aug-03 16:01

#include <iostream>

int SetVal_1(int iNum)
{
	return iNum +1;
}

int SetVal_2(int iNum)
{
	return iNum * 2;
}

int SetVal_3(int iNum)
{
	return iNum * 3 + 4;
}

void main()
{
	int LuckyNum = SetVal_1(5), SetVal_2(6), SetVal_3(7);

	printf("Lucky number = %d\n", LuckyNum);
}

BuggyMax

Re: comma operator

Ryan Binns19-Aug-03 21:01

Ryan Binns

19-Aug-03 21:01

Because commas are used for other things. Semicolons are used for the end of a statement, so why not use them? If you use commas, the code basically looks like one big function call. I'm not sure why you'd want to use commas over semicolons.

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"

Need help in SDI

S^nyp19-Aug-03 16:04

S^nyp

19-Aug-03 16:04

I want to open a file but when I try to open it nothing comes up just the last thing I wanted. I know what it is you know cleaning the last work and loading the next but I forgot how to do it... Help?? Confused | :confused:

[It is possible to represent everything in this universe by using 0 and 1]

file extensions

Marissa18219-Aug-03 16:03

Marissa182

19-Aug-03 16:03

Hi Im wondering how i can associate certain file extension to my program and have it run the program when the person opens a file with that extension any help is appreciated

thanks

Re: file extensions

Mahesh Varma19-Aug-03 18:12

Mahesh Varma

19-Aug-03 18:12

Hi

To associate a file extension to your program, you should create a registry entry under

HKEY_CURRENT_USER
-->Software
-->Microsoft
-->Windows
-->CurrentVersion
-->Explorer
-->FileExts.

1. Under FileExts create a key with same name as your file extension.
(Eg: For bitmap files you can find a key named .bmp under FileExts.)

2. Also create a subkey named "OpenWithlist".

3. Add a string value named "a".

4. Set the value data of this key as your application path.
(Eg: for paint you can find the entry mspaint.exe as value data)

Mahesh

Re: file extensions

Mahesh Varma19-Aug-03 18:25

Mahesh Varma

19-Aug-03 18:25

Hi

Sorry i made a mistake.

1. Under the FileExt key, add a string value named "Application".
2. Set the value data of this string value as your application path.
(Eg. For .bmp you can see this value as mspaint.exe)

Mahesh

how do i convert bmp to jpeg?

hxr60119-Aug-03 15:53

hxr601

19-Aug-03 15:53

i need a library of converting bmp to jpeg.
but i don't find it.
can you tell me where i can download it ?

must http download!

thx

hxr601

Re: how do i convert bmp to jpeg?

Mahesh Varma19-Aug-03 17:42

Mahesh Varma

19-Aug-03 17:42

Hi

Try CxImage library.
http://www.codeproject.com/bitmap/cximage.asp

Mahesh

Checkboxes and CTreeCtrl!?!?!

Bob Stanneveld19-Aug-03 13:38

Bob Stanneveld

19-Aug-03 13:38

Hello,

I've got a tree control on my dialog with checkboxes. Everything works fine, except that I cannot find a proper way to check wheter the checkbox is checked or not Confused | :confused:

.

It's probably a simple tiny thing, but I can't find it! Does anybody know what I have overlooked?

Thanks in advance.

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

Re: Checkboxes and CTreeCtrl!?!?!

Dominik Reichl19-Aug-03 20:57

Dominik Reichl

19-Aug-03 20:57

If you are using MFC use this:
BOOL CTreeCtrl::GetCheck( HTREEITEM hItem ) const;

If you are using Win32 API, you have to send a message:

TVITEM item;
item.mask = TVIF_HANDLE | TVIF_STATE;
item.hItem = hItem;
item.stateMask = TVIS_STATEIMAGEMASK;
::SendMessage(m_hWnd, TVM_GETITEM, 0, (LPARAM)&item);
bChecked = (BOOL)(item.state >> 12) -1;

Hope that helps Big Grin | :-D

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

Re: Checkboxes and CTreeCtrl!?!?!

Bob Stanneveld20-Aug-03 3:48

Bob Stanneveld

20-Aug-03 3:48

This sure helps! Big Grin | :-D

thanks a lot!

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

fopen (* delete *)

The_Server19-Aug-03 13:21

The_Server

19-Aug-03 13:21

Hi all...

I m working on win32 console application....
does anyone know how can I delete a file?

=-=-=-=-=-=
The Server

Re: fopen (* delete *)

ZoogieZork19-Aug-03 13:52

ZoogieZork

19-Aug-03 13:52

_unlink()

or

DeleteFile()

- Mike

Re: fopen (* delete *)

Mahesh Varma19-Aug-03 17:49

Mahesh Varma

19-Aug-03 17:49

Hi

DeleteFile(lpFileName)

If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.

Mahesh

Help in SDI

S^nyp19-Aug-03 13:15

S^nyp

19-Aug-03 13:15

I'm trying to make a program just like notepad but a little bit more "Funner". I have nothing right now on my spare time to do so don't ask. I can't seem to find a function to clear the recent file list when you click the 'File' in the menu. Can anyone help me?? Confused | :confused:

[It is possible to represent everything in this universe by using 0 and 1]

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