Double to String - C / C++ / MFC Discussion Boards

kamalesh8221-Jun-06 7:42

21-Jun-06 7:42

How can i access(by iterating)list in the file, which is supplied dynamically(browsing to select file using CFileDialog)during the execution in vc++(mfc) project??

kamalesh

Re: list in mfc

led mike21-Jun-06 7:55

led mike

21-Jun-06 7:55

Use CFileDialog::GetPathName() to get the path of the file. Then open the file. Then read the data from the file.

Re: list in mfc

kamalesh8221-Jun-06 8:00

kamalesh82

21-Jun-06 8:00

ya i already used that.frm thre i can read only the 1st list.but iterating the list using Clist, it's not happening. can u tell me that? how to iterate in this file?

kamalesh

Re: list in mfc [modified]

Zac Howland21-Jun-06 8:35

Zac Howland

21-Jun-06 8:35

If you set the OFN_ALLOWMULTISELECT flag for the dialog, you use the following code to iterate through the list of path names:

CFileDialog dlg(...); // use appropriate settings<br />
if (dlg.DoModal() == IDOK)<br />
{<br />
POSITION pos = dlg.GetStartPosition();<br />
while (NULL != pos)<br />
{<br />
CString newPath = dlg.GetNextPathName(pos);<br />
// do something with newPath<br />
}

Is that what you are trying to do?

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

-- modified at 15:29 Wednesday 21st June, 2006

Re: list in mfc

David Crow21-Jun-06 9:11

David Crow

21-Jun-06 9:11

kamalesh82 wrote:
frm thre i can read only the 1st list

What list? Are you trying to read the contents of the selected file?

kamalesh82 wrote:
...but iterating the list using Clist...

How are you using CList?

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: list in mfc

led mike21-Jun-06 10:19

led mike

21-Jun-06 10:19

and let me add... Confused | :confused:

Re: list in mfc

Hamid_RT21-Jun-06 19:31

Hamid_RT

21-Jun-06 19:31

if you want to read file and directory names with CListBox use DlgDirList

whitesky

Double to String

Max++21-Jun-06 6:59

Max++

21-Jun-06 6:59

I use function _gcvt() for convert the double value to string such as:

y = 0.01;
_gcvt(y,10,buffer);
MessageBox(buffer);

My problem is that the MessageBox will show "1.e-002".
How to do if want the string "0.01" after finish this function.

Re: Double to String

Greg Daye21-Jun-06 7:04

Greg Daye

21-Jun-06 7:04

you could try doing a sprintf.

y = 0.01;
sprintf ( buffer, "%f", y );

Re: Double to String

Jun Du21-Jun-06 7:08

Jun Du

21-Jun-06 7:08

Use

sprintf(buffer, "%f8.2", y);

instead.

Best,
Jun

Re: Double to String

Hamid_RT21-Jun-06 19:25

Hamid_RT

21-Jun-06 19:25

or see here

<br />
	double y = 1230.01;<br />
	CString strxx;<br />
	strxx.Format("%lf", y );<br />
	MessageBox(strxx);<br />

whitesky

MFC CfileDialog

Manjunath S21-Jun-06 6:38

Manjunath S

21-Jun-06 6:38

Hi,
The below code for cfiledialog is have some problem. the problem is when i
press open many times the file dialog box opens ,but sometimes ( at any time ) when file dialog is open and if i press some starting character to select particular file ,the whole application closes automatically..

myclass::OnOpen() {
CFileDialog dlg(TRUE);

Sleep(50);
if (dlg.DoModal() == IDOK) {
l_strFileName = dlg.GetPathName();
MessageBox(l_strFileName);
filepath2 = (char *) (LPCTSTR) l_strFileName;
m_select.ShowWindow(SW_HIDE);
m_start.ShowWindow(SW_SHOW);
m_ed.SetWindowText(l_strFileName);

} }

Manjunath S
GESL
Bangalore

Re: MFC CfileDialog

David Crow21-Jun-06 6:50

David Crow

21-Jun-06 6:50

Manjunath S wrote:
Sleep(50);

What's this for? A gratuitous Sleep() is usually an indication of something gone wrong.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: MFC CfileDialog

Manjunath S21-Jun-06 7:20

Manjunath S

21-Jun-06 7:20

Hi ,
If i remove sleep then also iam getting same error.

Manjunath S
GESL
Bangalore

Re: MFC CfileDialog

led mike21-Jun-06 7:33

led mike

21-Jun-06 7:33

Then you're giving the gratuity somewhere else.

Re: MFC CfileDialog

Manjunath S21-Jun-06 7:42

Manjunath S

21-Jun-06 7:42

can i get any sample code regarding ,to open fileopen dialog box

Manjunath S
GESL
Bangalore

Re: MFC CfileDialog

David Crow21-Jun-06 7:37

David Crow

21-Jun-06 7:37

Exactly what steps are you taking to reproduce the problem? Does it happen with every folder, or one in particular? What character are you typing? Is Enter/Return clicked? Does the same thing happen with GetOpenFileName()?

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: MFC CfileDialog

Manjunath S21-Jun-06 7:47

Manjunath S

21-Jun-06 7:47

Hi,
In every folder iam facing this problem,but not every time . once in while (frequency is 1 time for 20 times trying)my whole application closes....

Manjunath S
GESL
Bangalore

Re: MFC CfileDialog

Justin Tay21-Jun-06 7:53

Justin Tay

21-Jun-06 7:53

Re: MFC CfileDialog

David Crow21-Jun-06 7:58

David Crow

21-Jun-06 7:58

Manjunath S wrote:
once in while (frequency is 1 time for 20 times trying)my whole application closes....

You've got problems elsewhere that are manifesting at the point in which you are using CFileDialog. This code should run 20+ times with no troubles:

CFileDialog dlg(TRUE);
if (dlg.DoModal() == IDOK)
    AfxMessageBox(dlg.GetPathName());

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: MFC CfileDialog

Zac Howland21-Jun-06 8:52

Zac Howland

21-Jun-06 8:52

Just an FYI since I don't think these issues are causing this problem (at least not directly) ...

1)

Manjunath S wrote:
Sleep(50);

Chances are very high that if you are calling Sleep, something is wrong with your design. This is almost always the case when done in GUI code (as is the case here).

2)

Manjunath S wrote:
filepath2 = (char *) (LPCTSTR) l_strFileName;

LPCTSTR is defined as (const TCHAR*). Aside from the fact that the cast above won't work properly in a UNICODE build, it isn't want you want anyway. You aren't showing what you use filepath2 for, but I'm guessing you will either want it as a CString itself, a List/Array of CStrings, or don't need it at all.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: MFC CfileDialog

Manjunath S21-Jun-06 19:48

Manjunath S

21-Jun-06 19:48

Hi,

1.I deleted sleep
2.I need to pass filepath2 as a char* to a function in DLL.
Now the Modified code looks like this ...

void Upload::OnSelect()
{

CFileDialog upload(FALSE);

if(upload.DoModal() == IDOK) {
l_strFileName2 = upload.GetPathName();
MessageBox(l_strFileName2);
/* where filepath3 is a global char* variable */
filepath3 = (char *) (LPCTSTR) l_strFileName2;
m_start.ShowWindow(SW_SHOW);
m_select.ShowWindow(SW_HIDE);
m_edt.SetWindowText(l_strFileName2);
}
}

The above code problem is CfileDialog and whole application closes automatically (once in 18-20 times of Onselect is clicked) .The application closes when i try to select filename in filedialog using keyboard charater(i.e filename first character) )..

Thanking You

Manjunath S
GESL
Bangalore

Re: MFC CfileDialog

Zac Howland22-Jun-06 3:35

Zac Howland

22-Jun-06 3:35

Manjunath S wrote:
2.I need to pass filepath2 as a char* to a function in DLL.
Now the Modified code looks like this ...

And the DLL method doesn't take a const char*? If that is the case, what you are doing is still a problem. You are casting away the const on a CString object's private data (which you have no control over). Basically, if the CString object decides to clean up or allocate a bigger block, your pointer is out in the weeds. Try this:

char filepath3[_MAX_PATH] = {0};<br />
void Upload::OnSelect()<br />
{<br />
CFileDialog upload(FALSE);<br />
<br />
if(upload.DoModal() == IDOK) <br />
{<br />
l_strFileName2 = upload.GetPathName();<br />
MessageBox(l_strFileName2);<br />
/* where filepath3 is a global char* variable*/<br />
strncpy(filepath3, l_strFileName2, _MAX_PATH);<br />
// The following 2 lines are commented out for debugging purposes<br />
//m_start.ShowWindow(SW_SHOW);<br />
//m_select.ShowWindow(SW_HIDE);<br />
m_edt.SetWindowText(l_strFileName2);<br />
}<br />
}

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: MFC CfileDialog

Hamid_RT21-Jun-06 19:22

Hamid_RT

21-Jun-06 19:22

why do you use Sleep?

whitesky

Setting language used for menus/dialogs (UI language)

fourierman21-Jun-06 6:33

fourierman

21-Jun-06 6:33

Are there any functions available to set the language used for menus/dialogs once a MUI is installed?

The user would manually configure this via: control panel -> regional & language options -> languages tab

Microsoft calls this the UI language and documents functions (GetSystemDefaultUILanguage, GetUserDefaultUILanguage) to get the value, but nothing to set it:
www.microsoft.com/globaldev/reference/localetable.mspx

Thanks for any help

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