C / C++ / MFC Discussion Boards

Tim Deveaux3-Aug-01 5:38

3-Aug-01 5:38

Yes, but don't forget the :: op with no namespace spec looks for vars in the global namespace - vars can be hidden if declared at an intermediate scope:

// global scope - commented out, compiler will complain...
// int something(1);
 
int main(int argc, char* argv[])
{
    // full fn scope
    int something(2);

    {
        // local block scope
        int something(3);

        cout << something << ::something << endl;
    }

    return 0;
}

This code won't compile until you uncomment the global decl for something.
The fn scope something is effectively hidden from code inside the local block.

a question about Project workspace

Gérald Mercet3-Aug-01 3:06

Gérald Mercet

3-Aug-01 3:06

I have created a dlg application. I have MyappDlg.cpp and .h module and Myapp.cpp and.h module. In the dlg part i just have the declarations and definitions of members and methods as button, editbox..., in the other part i have all the methods which the main aim is to do some calculations. So, as you could think i want to link the dlg part to the calculation part. So, in the dlg.h i just put the line:#include "MyApp.h"
So, i don't know if it's enough for doing the calculation in the dlg box. Is anybody could explain me the way of doing this job?

thanks in advance

gerald

Re: a question about Project workspace

Jake Palmer3-Aug-01 7:09

Jake Palmer

3-Aug-01 7:09

If you have a dialog that needs to perform some specific calculations, it would make sense to include those functions in the dialog class. I don't know of any reason to keep them in the App class, but if so, then the line of code to #include the App class is generated for every cpp file by the class wizard automatically. To call its functions you would need to use AfxGetApp() for a pointer to the application object. hope that helps,
Jake

Dialog Background

3-Aug-01 2:26

Can anyone give me some suggestions on how to replace window standard dialog view to an image.

thanks
Eek! | :eek:

nott

Re: Dialog Background

Christian Graus4-Aug-01 2:43

Christian Graus

4-Aug-01 2:43

Override OnEraseBackground and draw your image.

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.

Dao Database ??

otvac3-Aug-01 1:59

otvac

3-Aug-01 1:59

When I open a Dao recordset with more than one table ([MyTableOne] and [MyTableTwo], for example), the dataset is set read only and I can't update any records. I can't seem to find the answer to this one. All help appreciated!

Richard

Re: Dao Database ??

Tim Deveaux3-Aug-01 6:05

Tim Deveaux

3-Aug-01 6:05

I think the way the tables are joined and whether the db maintains referential integrity can have an impact on whether a join is updateable.

I know thats not a whole lotta help, but I do seem to recall from the dark and distant past that I was able to write to certain types of recordsets that were based on multiple tables.

Maybe MSDN article ID: Q175168 can give you some ideas.

Re: Dao Database ??

Carlos Antollini3-Aug-01 6:50

Carlos Antollini

3-Aug-01 6:50

Is true, When you open more than one table, the tables are read-Only This is for integrity.
You need to Write First one, and then the other one.
You Have FK for Integrity?
Because is Important, to poen in a order for the FK, because the database can refuse the insert....

Cheers!!!!
Smile | :)

Carlos Antollini.

Skins without MFC

3-Aug-01 1:57

Hello !
I´ve read this article http://www.codeproject.com/dialog/skinstyle.asp
but how can i create anouther dialog box in my program with it ?
Like an About Box with its own skin and skin file , please tell me! !!

Bitmap Question

Nick Armstrong3-Aug-01 1:39

Nick Armstrong

3-Aug-01 1:39

I have a doc/view program (sdi) and I want to be able to load and display bitmaps on the fly from .bmp files. I have an array of cells that the document keeps track of and I want the view to draw the correct bitmap who's filename will be stored in the cell object so that when OnDraw is called it looks up which bitmap it should be displaying and loads and displays it, opposed to having the bitmaps as resources. I have gathered that to load a specific bitmap you use the code...

HBITMAP hImage = (HBITMAP)LoadImage(NULL, "c:\\nick.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_DEFAULTSIZE);

but I cannot work out how to display it because everything I blit to the screen is blank. I've checked and the bitmap is loading ok, just not displaying.

How do you do this?

Cheers for any help

Nick

Confused | :confused:

Re: Bitmap Question

jerry0davis3-Aug-01 1:49

jerry0davis

3-Aug-01 1:49

Try A DIBSection wrapper for Win32 and WinCE

Smile | :)

Re: Bitmap Question

Nick Armstrong3-Aug-01 2:11

Nick Armstrong

3-Aug-01 2:11

Thx a lot, looks like this'll work

Nick

Big Grin | :-D

Re: Bitmap Question

Not Active3-Aug-01 6:25

Not Active

3-Aug-01 6:25

An option I have used is using IPicture. It has a Render method that takes dc to draw the image onto. You can use gif, jpg, bmp, etc. Look in MSDN "How To Load and Display Graphics Files w/LOADPIC.EXE Q218972".

Duplicate

3-Aug-01 1:25

Hi
in my app I gave CFtpConnection class. how can i duplicate this variable? i mean, how can i make another excactly the same variable?
I've tried this:

CFtpConnection *pFtp;
....
pFtp = Session.GetFtpConnection(...);
...
...
CFtpConnection dFtp;
dFtp = *pFtp
...

and it didnt work...

so how can i do that?

thanks

Re: Duplicate

3-Aug-01 1:55

Try this:

CFtpConnection *pFtp;
....
pFtp = Session.GetFtpConnection(...);
...
...
CFtpConnection *dFtp;
dFtp = pFtp
...

Re: Duplicate

3-Aug-01 2:45

but that will create a new CFtpConnection pointer that points to the first CFtpConnection class, so if i change it, the first variable will change too, and that is something i dont want....
(i need the second CFtpConnection variable for a new thread that downloads a file from a FTP server that assosiated with the first CFtpConnection variable)

any other ideas?
thanks...

Re: Duplicate

Baafie4-Aug-01 8:57

Baafie

4-Aug-01 8:57

How about this:

CFtpConnection *pFtp;
....
pFtp = Session.GetFtpConnection(...);
...
...
CFtpConnection& hFtp = *pFtp;

First articles ready ...

.::RockNix::.3-Aug-01 1:17

.::RockNix::.

3-Aug-01 1:17

Hi,

we are building up a collection of articles. A few of them are ready. I hope our collection of tips and tricks will grow up in the next time.

Take a look at it ...

http://www.klangwerker.de/developer/

CU Mario ///

----------------------
www.klangwerker.de
mario@klangwerker.de
----------------------

Re: First articles ready ...

3-Aug-01 8:10

http://www.klangwerker.de/developer/
Ps! This is probably the most ugly website ever made Smile | :)

But the content is good beginner stuff.

Jimmy Hoffa

Can some clever person help with this?!

2-Aug-01 22:45

I am having the problem described at http://support.microsoft.com/support/kb/articles/Q240/8/69.ASP
(basically one of my operators thinks its ambiguous when it isnt, and I presume its because of this bug.) I cant work out if this document is giving me a way around it??

thanks,
Ben

Re: Can some clever person help with this?!

Derek Lakin2-Aug-01 23:12

Derek Lakin

2-Aug-01 23:12

If you post the code you're having a problem with we might be able to help Poke tongue | ;-P

Re: Can some clever person help with this?!

Bret Faller3-Aug-01 9:50

Bret Faller

3-Aug-01 9:50

I don't know if this helps but this works:

template<class t=""> void f(T value);
void main() {
int nNum = 3;
const int *p = &nNum;
f(*p);
}

template <class t=""> void f(T value)
{
printf("%d", value);
}

Bret Faller
Odyssey Computing, Inc.

CComboBox

Gérald Mercet2-Aug-01 22:43

Gérald Mercet

2-Aug-01 22:43

I would like to use data in CCombobox in my code with a switch method. So, i have choosen the option drop list, because i need that my variable is an integer. In my example i have put firstly in the data of the Combobox a data1, then data2...So, i would like to know if this order stay the same all the time, and if in switch method, case 0 is for data1....

thanks in advance

gerald

Dead | X|

Re: CComboBox

Michael Dunn3-Aug-01 8:34

Michael Dunn

3-Aug-01 8:34

Did you make a member variable with ClassWizard? If so, the value of the variable is the index of the selected item - the same value you get with CComboBox::GetCurSel().

--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

CDialog

2-Aug-01 22:15

Hi How do I get a cdialog to know it's finished whit initializing and painting all controls on board? Is there a message going out or something?

Per

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