Re: I think you dont understand me. - C / C++ / MFC Discussion Boards

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Re: this sample doesnf help me!

Carlos Antollini24-Jul-01 11:10

Carlos Antollini

24-Jul-01 11:10

Why the sample don't help?
The sample that said Tomasz is very good.
Try to explain that you don't understand....
Regards

Carlos Antollini.

ID??

24-Jul-01 5:12

hi

almost every control has a parameter ID in its Create() function...(CButton for example)

what is that parameter and what should i pass to the function?
i've tried to put any number and it worlks, but it looks wrong to me

thanks

Re: ID??

Christian Graus24-Jul-01 13:06

Christian Graus

24-Jul-01 13:06

The ID is defined in resource.h and then passed in by name. This is so there is no double up, where two controls have the same ID.

Christian

#include "std_disclaimer.h"

The careful application of terror is also a form of communication.

Eagles may soar, but weasels don't get sucked into jet engines.

Serialize : How can I know if the loading from the file success ???

24-Jul-01 5:04

I want to use in serialize and CArchive for save and load from file
But I don't know how can I check if the loading success ?
Who can help me ? Confused | :confused:

Re: Serialize : How can I know if the loading from the file success ???

C~~MFC6.0~~VS.NETUser24-Jul-01 5:20

C~~MFC6.0~~VS.NETUser

24-Jul-01 5:20

Try using...

if(ArchiveObj.isLoading())
{
     //do if CArchive::isLoading() returns true
     //Loading Data...
}
else
{
     //do if CArchive::isLoading() returns false
     //Storing Data...
}

Hope it works...

I think you dont understand me.

24-Jul-01 10:23

I need to check if the operation of the loading itself is successes or that failed for example in case that the file terminated suddenly.

Re: I think you dont understand me.

C~~MFC6.0~~VS.NETUser27-Jul-01 6:10

C~~MFC6.0~~VS.NETUser

27-Jul-01 6:10

Sorry, In your if/else bodies you need to check the for the end of the file. Try using a counter, and the CFile::GetLength() if CArchive derives from CFile(I don't rememeber) or if not CFile::GetStatis(/*FileName as param*/) which fills the CFileStatis(The Name may be wrong so check MSDN) obj and the CFileStatis obj will have a length memeber(check MSDN for name). You need to use if statements to test the counter to see if counter is smaller than the file length. When you read the Archive add the amount you just read from the Archive to the counter(this is hard to do and I can explain it here maybe later in this thread if you like).

Hope this helps...

Real World Coding:
POP& BuyAPop(Money ADollar){...};

Re: I think you dont understand me.

Matt Gullett27-Jul-01 6:30

Matt Gullett

27-Jul-01 6:30

CArchive will throw an exception if it encounters a probloem while loading or saving the file. This includes if it encounters an unexpected end of file.

(code assumes fp is a CFile object already opened.)

try
{
CArchive ar(&fp, CArchive::load);

// serialize objects here

ar.Close();
}
catch(CArchiveException* pArError)
{
// an error occured
pArError->Delete();
}
catch(CException* pError)
{
// an error occured
pError->Delete();
}
catch(...)
{
// an error occured
}

How can you brush your text in yellow ??

24-Jul-01 10:25

Re: How can you brush your text in yellow ??

Carlos Antollini27-Jul-01 6:26

Carlos Antollini

27-Jul-01 6:26

With <'PRE'> and <'/PRE'> without '

Carlos Antollini.

Re: How can you brush your text in yellow ??

C~~MFC6.0~~VS.NETUser27-Jul-01 6:27

C~~MFC6.0~~VS.NETUser

27-Jul-01 6:27

By using the <pre> HTML Tags...

<pre>What you want to be Preformatted.</pre>

The <pre> allows you to display a fixed font and more than one space(HTML allow only one space to be displayed outside of <pre>...</pre> ). The yellow is applyed by www.codeproject.com in maybe a stylesheet that replaces the background color of all the <pre>...</pre> it find.

Real World Coding:
POP& BuyAPop(Money ADollar){...};

Filling an HBITMAP with an HICON

24-Jul-01 4:40

I have an HICON, and need to be copy the contents of it to a HBITMAP.

How could I do this, please?

Peter

Re: Filling an HBITMAP with an HICON

Tomasz Sowinski24-Jul-01 5:03

Tomasz Sowinski

24-Jul-01 5:03

Call DrawIcon or DrawIconEx for memory device context with HBITMAP selected.

Tomasz Sowinski -- http://www.shooltz.com

bit data types

Johnny Starr24-Jul-01 4:28

Johnny Starr

24-Jul-01 4:28

Anyone know how to read bits using a structure?

I used to do it like this using Borland. I need to know how to do it in MFC.

union test
{
int n 1:8;
unsigned char c;
}

This may not be correct syntax its been a while.

Old ansi C stuff.

JLS
Student/Part time programmer
Major Programming.

Re: bit data types

Tomasz Sowinski24-Jul-01 4:34

Tomasz Sowinski

24-Jul-01 4:34

This will compile when you remove space between 'n' and '1' and add semicolon after }.

Tomasz Sowinski -- http://www.shooltz.com

Re: bit data types

Johnny Starr24-Jul-01 4:35

Johnny Starr

24-Jul-01 4:35

thanks kind of rusty

JLS
Student/Part time programmer
Major Programming.

CButton Text Color change

Gerry24-Jul-01 3:53

Gerry

24-Jul-01 3:53

How can I change the colour of the text in a button @ run-time.

I tried to override the onctlcolor method:-

HBRUSH CTestDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
if (nCtlColor == CTLCOLOR_BTN)
{
pDC->SetTextColor(RGB(255,0,0));//set red
return (HBRUSH) m_Brush.GetSafeHandle();
};
return hbr;
}

m_Brush is a member brush & in OnInitDialog method, I create it with a solid brush.
m_Brush.CreateSolidBrush(RGB(129,129,129));

Thanks

Gerry.

a quastion

24-Jul-01 3:45

Hello all

how do i add TollBar and StatusBar to a dialog window?
thanks

Re: a quastion

Tomasz Sowinski24-Jul-01 3:52

Tomasz Sowinski

24-Jul-01 3:52

MFC sample DLGCBAR32 does exactly that.

Tomasz Sowinski -- http://www.shooltz.com

Making A CFont Go Bold

AJ12324-Jul-01 3:26

AJ123

24-Jul-01 3:26

I am trying to make the text bold in a CStatic. I wrote the following code, Can anyone see where i am going wrong.

CFont *M_titleFont is a member varible.

Code Snippet, from oninitdialog:

LOGFONT lf;
m_titleFont->GetLogFont(&lf);
lf.lfWeight = 700; //Set Bold

m_titleFont->CreateFontIndirect(&lf);

Cheers

Rich

Re: Making A CFont Go Bold

Tomasz Sowinski24-Jul-01 3:40

Tomasz Sowinski

24-Jul-01 3:40

How do you initialize m_titleFont?

Tomasz Sowinski -- http://www.shooltz.com

Re: Making A CFont Go Bold

AJ12324-Jul-01 6:00

AJ123

24-Jul-01 6:00

Oops Missed That Bit Out!

m_titleFont= GetDlgItem(IDC_TITLE)->GetFont();

Thanks Again
Rich

Re: Making A CFont Go Bold

fantastic_mr_fox24-Jul-01 6:26

fantastic_mr_fox

24-Jul-01 6:26

I found I had problems using CreateFontIndirect() with an existing font. But it was easier to create a new font instead.

LOGFONT lf;
m_titleFont->GetLogFont(&lf);
lf.lfWeight = 700; //Set Bold

CFont boldFont;
bolFont.CreateFontIndirect(&lf);

// continue to use boldFont

Hope this helps. =)

=)

SQLConfigDataSource() & string problem

Derek Price24-Jul-01 3:11

Derek Price

24-Jul-01 3:11

Hello,

I am having a trouble using the SQLConfigDataSource() method. I can call it successfully with the code below:

CString sDriver;
sDriver.LoadString(IDS_SYBASE_DRIVER);
bSuccess = SQLConfigDataSource(NULL,ODBC_ADD_DSN,sDriver,
    "DSN=123\0"
    "DatabaseName=123\0"
    "DatabaseFile=E:\\junk.db\0"
    );

But when I try to put the connection string into a CString or the string table, the string gets reduced to "DSN=123" due to the required '\0' value separator. I would like to create a format string like "DSN=%s\0DatabaseName=%s\0DatabaseFile=%s\0" so can create a custom ODBC database.

Any ideas on how to do this?

Thanks in advance!
Derek

Re: SQLConfigDataSource() & string problem

Michael Dunn24-Jul-01 3:22

Michael Dunn

24-Jul-01 3:22

I would like to create a format string like "DSN=%s\0DatabaseName=%s\0DatabaseFile=%s\0"

This doesn't work because the first \0 is interpreted as the end of the format string. AFAIK neither the C string APIs nor CString support embedded null characters. BSTRs do support them, but working with plain BSTRs is a hassle, and CComBSTR doesn't handle embedded nulls well.

What I usually do is use some other unique separator like '|' when building the string, then loop thru the string and replace '|' with '\0'.

--Mike--
http://home.inreach.com/mdunn/
"Make sure that if you are using a blow torch that you don't set anything on fire."
-- Chris Maunder

Last Visit: 31-Dec-99 18:00 Last Update: 22-Jun-24 10:25

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