C / C++ / MFC Discussion Boards

Keshav V. Kamat12-Apr-07 23:48

12-Apr-07 23:48

Thanks. really appreciate it.
I know how to work with all the components individually.
the problem is putting all together in vc++ 6.0 as an application.
thanks anyways.
I got a pretty decent idea now.

Keshav Kamat Smile | :)

India

How to merge only two cells using MSHFlexGrid?

megha_gharote12-Apr-07 22:26

megha_gharote

12-Apr-07 22:26

Dear Friends,

I am using MSHFlexGrid control. And i want to merge two cells. Can anybody please help me to do that?
On MSDN I got one example but i m not able to use the same .

Help Need urgently.

Megha

Multiple fonts CEdit

hatemtaleb12-Apr-07 22:20

hatemtaleb

12-Apr-07 22:20

Hey Guys,

Is it possible to display two fonts or more in the same CEdit control?
I need to display a price in a special format, something like this: 12.2536

Thanks in advance

Re: Multiple fonts CEdit

Mark Salsbery13-Apr-07 7:51

Mark Salsbery

13-Apr-07 7:51

No. There's no formatting information in the text of a standard edit control.

You can do it with a RichEdit control though.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

already defined in .obj

Programm3r12-Apr-07 22:16

Programm3r

12-Apr-07 22:16

Hi all,

I'm receiving a linker error 2005, and I can't understand why Confused | :confused:

I have a header file where I declare some global variables.
int i, n, Code;
Then I have a .cpp file (not the main) where I use the variables.
Then I have another .cpp file (main), where I call the functions and so on.
But I receive the following errors:

error LNK2005: "int Code" (?Code@@3HA) already defined in ftpHook.obj	main.obj
error LNK2005: "int i" (?i@@3HA) already defined in ftpHook.obj	main.obj
error LNK2005: "int n" (?n@@3HA) already defined in ftpHook.obj	main.obj
fatal error LNK1169: one or more multiply defined symbols found	C:\ftp.exe

Can anyone please help me ???
Many Thanks
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: already defined in .obj (modified: some addendum)

CPallini12-Apr-07 22:24

CPallini

12-Apr-07 22:24

you have to declare extern such variables in the header file
and define them in the proper cpp file, for instance:

extern int iGlobal;

in the header file and:

int iGlobal;

in one and only one cpp file.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: already defined in .obj [MOD]

Programm3r12-Apr-07 22:30

Programm3r

12-Apr-07 22:30

Thanks .... Smile | :)

CPallini wrote:
you have to declare extern such variables in the header file.

This is going to sound stupid, but I have not yet done something like that, if you could be so kind, could you please give me an example ???

Many Thanks
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: already defined in .obj [MOD]

Michael Dunn12-Apr-07 23:02

Michael Dunn

12-Apr-07 23:02

See the FAQ:
6.2 How do I share a global variable among my .CPP files?[^]

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Ford, what's this fish doing in my ear?

Re: already defined in .obj [MOD]

Programm3r13-Apr-07 1:15

Programm3r

13-Apr-07 1:15

Thank you for the help Mike Smile | :)

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: already defined in .obj (modified: some addendum)

Programm3r12-Apr-07 22:35

Programm3r

12-Apr-07 22:35

Thank you for the help CPallini, the explanation that you gave will also work for more than one header file and cpp file (Class - Base Classes [files]) ???

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: already defined in .obj

Don Box12-Apr-07 22:34

Don Box

12-Apr-07 22:34

Use

/force

switch in linker option.

Come online at:-
jubinc@skype

Re: already defined in .obj

Programm3r12-Apr-07 22:36

Programm3r

12-Apr-07 22:36

Thanks for the reply, what would /force do ??

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: already defined in .obj

cp987612-Apr-07 22:39

cp9876

12-Apr-07 22:39

/force sounds unwise, you should fix the problem by using extern in the headers and only defining the variables once. To see what /force does check the documentation.

I know that programming style and naming conventions are controversial, but global variables called i, n ??? How about something more descriptive?

Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."

Re: already defined in .obj

Programm3r12-Apr-07 22:41

Programm3r

12-Apr-07 22:41

cp9876 wrote:
I know that programming style and naming conventions are controversial, but global variables called i, n ??? How about something more descriptive?

lol, I totally agree, but when pasting an example on the CP, I don't like using the full variable name Smile | :)

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

How to add data to a grid [modified]

engilela12-Apr-07 21:20

engilela

12-Apr-07 21:20

Hi,
I am new to vc++.net (mfc),i need to know how to add data and column headers to the MSDATAGRID VERSION 6.0 dynamically IN vc++.Net(mfc application), Please Some one help me

Thanks in advance
Engilela

-- modified at 6:26 Friday 13th April, 2007

Linker Error

Programm3r12-Apr-07 19:59

Programm3r

12-Apr-07 19:59

Hi all,

Take the following into consederation:
header file

class ftp :
	public ftpHook
{
public:
    int ftp_FileExists(LPSTR Filename);
    LPSTR ftp_StrChr(LPSTR StringPtr, char Ch);
};

cpp file

#include "ftp.h"
int ftp::ftp_FileExists(LPSTR Filename)
{
  Ptr = ftp_StrChr(PathBuffer+lstrlen((LPSTR)LocalDir)+1,':');
  //some code ....
}
</code>

But I keep receiving the following error:

Error 1 error LNK2019: unresolved external symbol "public: char * __thiscall ftp::ftp_StrChr(char *,char)" (?ftp_StrChr@ftp@@QAEPADPADD@Z) referenced in function "public: int __thiscall ftp::ftp_FileExists(char *)" (?ftp_FileExists@ftp@@QAEHPAD@Z) ftp.obj

Can anyone please help me.
Many Thanks.
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Linker Error

Programm3r12-Apr-07 20:02

Programm3r

12-Apr-07 20:02

Cause LPSTR ftp_StrChr(LPSTR StringPtr, char Ch), has not yet been created in the cpp file.

I created the function, and now it is working. D'Oh! | :doh:

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Linker Error

Arman S.12-Apr-07 20:06

Arman S.

12-Apr-07 20:06

Look, you make a call to ftp::ftp_StrChr [inside ftp::ftp_FileExists] but this function is not defined [it has no body]. So define that function.

--
======
Arman

Re: Linker Error

Programm3r12-Apr-07 20:13

Programm3r

12-Apr-07 20:13

Thanks Arman ... I realized my problem after further investigation D'Oh! | :doh:

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

split file by play length

anu jaggi12-Apr-07 18:59

anu jaggi

12-Apr-07 18:59

hi all!!!
i have already split file by size eg. for window media format file (wmv/wma).
but now i want to split file by play length like suppose i take %age in the edit box
and it will parts that file with all equal size and remaining with the rest.

thanks in advance

Re: split file by play length

Arman S.12-Apr-07 20:23

Arman S.

12-Apr-07 20:23

The purpose of splitting is uncertain...
What's the problem? You have the file length and the persentage, so define the split position = (length*percent)/100. Or you wonder smth else?

--
======
Arman

icon disappears in win 2k

ghunzel0612-Apr-07 17:25

ghunzel06

12-Apr-07 17:25

hi! i've made a custom control button. the problem is when i click the button, the icon "disappears". when i switch to other window and back again to my app, the icon is displayed again. i think it doesnt repaint properly. here's my code in OnPaint(): It only happens in Windows 2000, not in Win XP

void CIconBitmapButton::OnPaint()
{

__super::OnPaint();

CDC* pDC = this->GetDC();

SendMessage(WM_ICONERASEBKGND, (WPARAM) pDC->GetSafeHdc(), 0);

RECT canvasArea;
GetClientRect(&canvasArea);

int iconX = 0;
int iconY = 0;

ICONINFO iconInfo;
GetIconInfo(this->m_hIcon, &iconInfo);

HDC hDC = pDC->m_hDC;

CBitmap* iconBitmap = CBitmap::FromHandle(iconInfo.hbmColor);
CBitmap* maskBitmap = CBitmap::FromHandle(iconInfo.hbmMask);

BITMAP iconSize;
iconBitmap->GetBitmap(&iconSize);

iconX = iconSize.bmWidth;
iconY = iconSize.bmHeight;

// NOTE: icon must be drawn with these coordinates
int buttonX = canvasArea.right/2 - iconX/2;
int buttonY = canvasArea.bottom/2 - iconY/2;

pDC->DrawIconEx(buttonX, buttonY, this->m_hIcon,0,0,0,brush, DI_IMAGE);

// if (m_stretch)

ReleaseDC(pDC);
DeleteDC(hDC);
iconBitmap->DeleteObject();
maskBitmap->DeleteObject();

// if (this->m_hIcon)

}

Re: icon disappears in win 2k

Arman S.12-Apr-07 20:18

Arman S.

12-Apr-07 20:18

Seems there is a problem in last lines of the function. Don not call DeleteDC(hDC); the logic is that you do match a ReleaseDC per GetDC and this is all. Also you are wrapping a C++ object over iconInfo.hbmColor and iconInfo.hbmMask. These CBitmap objects are only temporary wrappers over underlying handles and thus do not call DeleteObject for them.

--
======
Arman

Device List

Xarzu12-Apr-07 16:11

Xarzu

12-Apr-07 16:11

What I am looking to do is to provide the user (who runs my program) with a list of devices that they can pick from. You can do this with an Open File dialog if you click on "My Computer". What I want to know is how I can set up the dialog before the user opens it to prsent this list. How would you do this in C++? Have you seen it done before?

[IMG]http://i67.photobucket.com/albums/h292/Athono/_help.png[/IMG]

I want one of two (or both) solutions.

#1) I already have a custom File Open dialog program written where I am able to make sure that the user selects a directory and is not allowed to input a filename. Now I just want to know how to set up this estantiated FileOpen class so that it will first come up with the "My Computer" area showing.

OR

#2) I want to create a drop-down menu that only shows the devices for the user to pick from. In other words, just the C drive, the D drive, etc.

Re: Device List

bob1697212-Apr-07 16:27

bob16972

12-Apr-07 16:27

Sounds like you want SHBrowseForFolder

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.