C / C++ / MFC

Re: string s1 = "abcd" string s2 = "2.53", how to detect that s2 representing a numeber?

15-Mar-06 18:29

Code[^] segment.

Nibu thomas
Software Developer

mrby12315-Mar-06 18:41

mrby123

15-Mar-06 18:41

I tried that those functions do not take a string as argument.

Re: string s1 = "abcd" string s2 = "2.53", how to detect that s2 representing a numeber?

Nibu babu thomas15-Mar-06 18:49

Re: string s1 = "abcd"; string s2 = "2.53", how to detect that s2 representing a numeber?

15-Mar-06 18:49

Exactly they take a single char.

That is what I said before. Scan through the string picking out each character and checking it.

Nibu thomas
Software Developer

Johann Gerell16-Mar-06 2:38

Johann Gerell

16-Mar-06 2:38

I personally use

long strtol( const char *nptr, char **endptr, int base );
long wcstol( const wchar_t *nptr, wchar_t **endptr, int base );

with which a 0 return value can be checked against the endptr parameter to see if a conversion occurred or not.

--
The Blog: Bits and Pieces

"History Folder" in office applications

Anil_vvs15-Mar-06 17:56

Anil_vvs

15-Mar-06 17:56

Can anyone tell me how to write entries into "History Fodler" programmatically?

Thanks and Regards,
Anil

How to enable disabled check box

Joy Anne15-Mar-06 17:49

Joy Anne

15-Mar-06 17:49

I have a Check Box in a dialog, I set "Disabled" as "True" in its properties. How can I enable it after I click a event handler during the program executing? If I want to disable it again, how can I do it?

What about a Radio Button? same way?

Thanks,
Joy Anne

Nibu babu thomas15-Mar-06 17:51

15-Mar-06 17:51

Joy Anne wrote:
How can I enable it after I click a event handler during the program executing? If I want to disable it again, how can I do it?

GetDlgItem(IDC_YOURCHECKBOX_ID)->EnableWindow(TRUE);

Nibu thomas
Software Developer

jhwurmbach16-Mar-06 6:38

jhwurmbach

16-Mar-06 6:38

Just for the records:
Calling GetDlgItem is extremly bad style!

For enabling/disabling items in a program, you use the

ON_UPDATE_COMMAND_UI(IDC_YOURCHECKBOX_ID, OnUpdateYourCheckbox)

idiom.

If you really need to manipulate the IDC_YOURCHECKBOX_ID-control, make a control variable and use this (as described by WhiteSky).

"We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation."

-- Caius Petronius, Roman Consul, 66 A.D.

-- modified at 12:38 Thursday 16th March, 2006

Nibu babu thomas16-Mar-06 16:52

16-Mar-06 16:52

jhwurmbach wrote:
Calling GetDlgItem is extremly bad style!

I don't think so. What are the reasons?

Nibu thomas
Software Developer

jhwurmbach16-Mar-06 21:50

jhwurmbach

16-Mar-06 21:50

Well, my statement may have come across a bit too strong.
But I believe that, in an object oriented environment, ou should use the object oriented way to do something.
By using the ID_SOMETHING resource constants directly, you are breaching confidentiality of the inner workings of the control-class.
You are working 'across' the MFC mechanisms, which I view as a bad thing when you have decided to use MFC.

Nibu babu thomas16-Mar-06 22:39

16-Mar-06 22:39

jhwurmbach wrote:
Well, my statement may have come across a bit too strong.

No. I just wanted to know.

jhwurmbach wrote:
But I believe that, in an object oriented environment, ou should use the object oriented way to do something.

True.

jhwurmbach wrote:
By using the ID_SOMETHING resource constants directly, you are breaching confidentiality of the inner workings of the control-class.

Well GetDlgItem(ID...) returns a pointer to a CWnd object. I don't see any breach here.

jhwurmbach wrote:
You are working 'across' the MFC mechanisms, which I view as a bad thing when you have decided to use MFC.

This is still MFC because it returns a CWnd pointer.

Well some advocate against using GetDlgItem but I personally like it.

Have you ever had problems with GetDlgItem, well I never had. I you had let please me know. Unsure | :~

Nibu thomas
Software Developer

how to interrrogate line by line, pick-up "Shmplk Reta : 1024 wps#, and store the three columns numbers into x[],y[],z[]

Hamid_RT15-Mar-06 20:08

Hamid_RT

15-Mar-06 20:08

or m_checkbox.EnableWindow(TRUE);
yes it's same

mrby12315-Mar-06 17:16

mrby123

15-Mar-06 17:16

"Eventyy Tspe : Fwll Wwvefwrm"
"Version : V 8.01-8.0 MiniMate Plus"
"Shmplk Reta : 1024 wps"
"avt : ret/s and "
"ueak wecter Swm : 8.41 ww/t"
"Mar 10 /06 15:38:54 Mar 10 /06 15:39:11 Event qecerded.
"
"PC SW Verqiwn : V8.01 - 8.01"

Tranw Vertw Longw
0.127 0.127 0.0
0.127 0.127 0.127
0.127 0.127 0.127
0.127 0.127 0.127
0.127 0.127 0.127
0.127 0.127 0.127
0.127 0.127 0.0

-- modified at 23:19 Wednesday 15th March, 2006

Re: how to interrrogate line by line, pick-up &amp;quot;Shmplk Reta : 1024 wps#, and store the three columns numbers into x[],y[],z[]

John M. Drescher15-Mar-06 17:39

John M. Drescher

15-Mar-06 17:39

I know I just finished an adult beverage but I am clueless why exactly you posted this here. Is this an answer to a question that someone posted? Or did codeproject somehow mess up?? Confused | :confused:

[EDIT]
Ok, I think I know what you want. You are asking how to read in data like this line by line and store the last data into a 3 dimensional array...
[/EDIT]

John

-- modified at 23:44 Wednesday 15th March, 2006

TreeView in VC++ 6.0

pankajgarg1215-Mar-06 17:15

pankajgarg12

15-Mar-06 17:15

In treeview when the paricular expanded node is made unexpanded after then it is expanded again , it shows the duplicate node of the expanded node.

-- modified at 23:18 Wednesday 15th March, 2006

Nibu babu thomas15-Mar-06 18:17

15-Mar-06 18:17

pankajgarg12 wrote:
In treeview when the paricular expanded node is made unexpanded after then it is expanded again , it shows the duplicate node of the expanded node.

You could be doing something wrong.

Nibu thomas
Software Developer

Re: AfxBeginThread With MFC

toxcct15-Mar-06 21:33

toxcct

15-Mar-06 21:33

CTreeView[^]

AfxBeginThread With MFC

stny200015-Mar-06 17:13

stny2000

15-Mar-06 17:13

When using the afxThread, like following articles
http://www.codeproject.com/internet/winsockintro01.asp#xx959651xx

How to call back the MFC function write in the MFC class.
I want to make a response where recevce the message.
I try to add following code in afxThread:

CTestingDlg::AddLog("Hello");

when compile it make error:
illegal call of non-static member function

Can i pass out the value or call back the function outside the afxThread ?

Thanks Smile | :)

Nibu babu thomas15-Mar-06 17:33

Re: AfxBeginThread With MFC

15-Mar-06 17:33

stny2000 wrote:
CTestingDlg::AddLog("Hello");

AddLog is a member function and you are accessing it as if it is a static member function.

Create an instance of CTestingDlg and then access AddLog.

Note: You will get better answers if you can post this question to the author of this article.

Nibu thomas
Software Developer

eli1502197915-Mar-06 21:10

eli15021979

15-Mar-06 21:10

Hi,

This is how you should use your thread:

AfxBeginThread(YourThreadName , this);

Now , in your thread :

UINT YourThreadName(LPVOID lpvoid)
{
    YourClass *dlg = (YourClass *)lpvoid;

    // call AddLog finction
    dlg->AddLog("Hellow");
}

Regards,
Eli

TreeView in VC++ 6.0

pankajgarg1215-Mar-06 17:11

pankajgarg12

15-Mar-06 17:11

I want to extract the icon of any file or folder .Earlier I solved this portion of treeview in vb.net using the implementation of the following API's. I want to know the implementation in VC++ 6.0

Private Declare Auto Function SHGetFileInfo Lib "shell32.dll" (ByVal pszPath As String, _
ByVal dwFileAttributes As Integer, ByRef psfi As SHFileInfo, ByVal cbFileInfo As Integer, _
ByVal uFlags As Integer) As IntPtr

-- modified at 23:16 Wednesday 15th March, 2006

Nibu babu thomas15-Mar-06 17:22

15-Mar-06 17:22

It's the same. Loop up MSDN for SHGetFileInfo for more details.

Nibu thomas
Software Developer

pankajgarg1215-Mar-06 17:58

pankajgarg12

15-Mar-06 17:58

Can I get the link for my Query in vc++ 6.0 ?

Nibu babu thomas15-Mar-06 18:02

15-Mar-06 18:02

SHFILEINFO shfi;
memset(&shfi,0,sizeof(shfi));

SHGetFileInfo("somebmpfile.bmp", 
FILE_ATTRIBUTE_NORMAL,
&shfi, sizeof(shfi),
SHGFI_ICON|SHGFI_USEFILEATTRIBUTES
);

//here is the icon
shfi.hIcon;

Nibu thomas
Software Developer