Re: Font size - C / C++ / MFC Discussion Boards

Re: Font size

CPallini31-May-07 0:47

CPallini

31-May-07 0:47

See the nHeight explanation here [^].
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: Font size

garfield18531-May-07 0:51

garfield185

31-May-07 0:51

I guess it is all about that line that I do not understand Poke tongue | ;-P

nHeight = -MulDiv(PointSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);

Can you explain me what it means?

Thanks!

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Re: Font size

Hamid_RT31-May-07 1:32

Hamid_RT

31-May-07 1:32

This code is for convert of points to logical device coordinates.

WhiteSky

Re: Font size

garfield18531-May-07 1:36

garfield185

31-May-07 1:36

O_o

Aha...

So how do I say that I want the font size to be 20, for example? Poke tongue | ;-P

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Re: Font size

CPallini31-May-07 1:49

CPallini

31-May-07 1:49

garfield185 wrote:
So how do I say that I want the font size to be 20, for example?

you have to set nHeight as follows:

nHeight = -MulDiv(20, GetDeviceCaps(hDC, LOGPIXELSY), 72);

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: Font size

CPallini31-May-07 1:43

CPallini

31-May-07 1:43

garfield185 wrote:
I guess it is all about that line that I do not understand

You also have to be aware that the system matches your request again available fonts.

garfield185 wrote:
nHeight = -MulDiv(PointSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);

Can you explain me what it means?

OK.
It simply states that nHeight isn't the pixel height of the font, but it is related with it by the factor
GetDeviceCaps(hDC, LOGPIXELSY)/72 that is system-dependant.

On my Laptop the factor is 1.33 meaning that I have to specify nHeight=27 (let's forget for the minus sign) to obtain a 20-point sized font (and nHeight=21 to obtain the 16-point one).

On your system maybe the difference between the requested font heights it's so small that the same font is choosen.

Hope that helps.
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: Font size

garfield18531-May-07 3:22

garfield185

31-May-07 3:22

Excuse my no-knowledge...

No it says that "hDC" is not declared...

What data does the function GetDeviceCaps need? Moreover, I guess LOGPIXELSY is a constant that I must define... OMG | :OMG:

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Re: Font size

CPallini31-May-07 3:43

CPallini

31-May-07 3:43

hDC must be a valid handle of a device context (HDC).
Using MFC you can pass the HDC of the current window (provided the code belongs to a window class)

nHeight = -MulDiv(20, GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSY), 72);

you can also use the screen HDC for the pourpose:

nHeight = -MulDiv(20, GetDeviceCaps(::GetDC(NULL), LOGPIXELSY), 72);

garfield185 wrote:
I guess LOGPIXELSY is a constant that I must define

No you must NOT define it, since it is already defined inside windows.h header 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: Font size

garfield18531-May-07 4:00

garfield185

31-May-07 4:00

Fine. No errors.

Anyway the size does no change. Am I missing something?

Here is all the written code.

************************
CFont m_fuente;
LOGFONT lf;
m_fuente.CreateStockObject(DEFAULT_GUI_FONT);
m_fuente.GetLogFont(&lf);
strcpy(lf.lfFaceName,"MS Sans Serif");
lf.lfHeight = -MulDiv(50, GetDeviceCaps(GetDC()->m_hDC, LOGPIXELSY), 72);
lf.lfWeight =700;
m_fuente.DeleteObject();
m_fuente.CreateFontIndirect(&lf);

m_label.SetFont(&m_fuente);

******************************

Should it be like this?

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Re: Font size

CPallini31-May-07 5:11

CPallini

31-May-07 5:11

The only problem I saw in your code was the declaration of

CFont m_fuente;

since m_fuente has to be a member of the Window class (otherwise it will be destroyed...)

I declared CFont as a member of my CDialog class and your code is working fine (I see a label with very, very big characters Big Grin | :-D

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: Font size

garfield18531-May-07 5:25

garfield185

31-May-07 5:25

YEAH!!!! You are the best!!!!

Thanks a lot!! I was creatin m_fuente on each function. I didn´t know it had to be a member of the class... Thank you very much!!

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Re: Font size

David Crow31-May-07 4:12

David Crow

31-May-07 4:12

garfield185 wrote:
What data does the function GetDeviceCaps need?

See here.

garfield185 wrote:
Moreover, I guess LOGPIXELSY is a constant that I must define...

No.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Font size

garfield18531-May-07 4:31

garfield185

31-May-07 4:31

Pallini told me about that. I get no errors. What I say is that the code I wrote on the post before does not change the size of the text...

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Creating .h files using MATLAB

Purushottama31-May-07 0:31

Purushottama

31-May-07 0:31

Hi,
I have some results calculated in MATLAB. Actually the result is in two arrays namely Bias and Scale Factor. I want the results to be in Coefficients.h. So that I could use it anywhere. Can anyone plaese help me out?
Please

Regards,
Puru

Re: Creating .h files using MATLAB

Cedric Moonen31-May-07 1:31

Cedric Moonen

31-May-07 1:31

What does this file contain ? Just plain data (without being C++ specific) ? If yes, why don't you simply read the file in your program ?
I don't see what you are trying to do. Why do you want to convert that to a header file ? Everytime you recompute your results you will need to recompile your application, that seems a crazy solution.

Cédric Moonen
Software developer

Charting control [v1.2]

Re: Creating .h files using MATLAB

CPallini31-May-07 2:10

CPallini

31-May-07 2:10

Cedric Moonen wrote:
Everytime you recompute your results you will need to recompile your application, that seems a crazy solution.

Some guy has to tell it to Microsoft, about their string tables! Big Grin | :-D

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.

MSVCRT.dll and _resetstkoflw() Win 2000 and XP

jerome_data31-May-07 0:27

jerome_data

31-May-07 0:27

Hi
I have a problem with msvcrt.dll from WinNT/System32 on windows 2000 (this dll doesn't have _resetstkoflw entry).

My software use this function and it works correctly on Win XP. I use Visual Studio and MFC.

Is it possible to forced my software to load other msvcrt.dll?

Please Help
thanks

Re: MSVCRT.dll and _resetstkoflw() Win 2000 and XP

Matthew Faithfull31-May-07 0:46

Matthew Faithfull

31-May-07 0:46

You could try static linking to the C Runtime rather than linking dynamically to the installed msvcrt.dll at runtime.
However if you do this you should use a #define to set the WINNT Version to 0x500, see MSDN for the exact macros to use, to make your entire build Windows 2000 compatible. If _resetstkoflw relies on WinXP only APIs then it will be cut from your code by the #define anyway and you may still have a problem. If setting the WINNT Version to 0x500 does not remove the _resetstkoflw declaration but it doesn't work on Windows 2000 at runtime then you've found a bug in C Runtime Smile | :)

Good luck

Nothing is exactly what it seems but everything with seems can be unpicked.

Re: MSVCRT.dll and _resetstkoflw() Win 2000 and XP

David Crow31-May-07 4:15

David Crow

31-May-07 4:15

According to this, it should be available on Windows 2000.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: MSVCRT.dll and _resetstkoflw() Win 2000 and XP

Stephen Hewitt31-May-07 14:41

Stephen Hewitt

31-May-07 14:41

If you need to use this function it seems to me than 99 times out of 100 it would be better to just increase the stack size and not use it!

Steve

Insert a dialog inside SDI(Pls reply me)

TobetheWinner31-May-07 0:23

TobetheWinner

31-May-07 0:23

I'm developing a dialog based application.Due to some issue i need to insert the
dialog inside SDI.So can you pls tell me how to do that job....
Thanks a lot.

bu

Re: Insert a dialog inside SDI(Pls reply me)

Roger Stoltz31-May-07 1:10

Roger Stoltz

31-May-07 1:10

I assume this is about how to add the dialog and its resources to the SDI project.

Copy the source files for the dialog to the SDI project folder.
Open the resource files (*.rc) for both projects and copy the dialog resource from your dialog project to your SDI project.
Add resource IDs for all the resources in your dialog in resource.h for the SDI project, don't forget the resource ID for the dialog itself. You can view all the required resources in the .rc file, they usually start with IDC_. Make sure the values don't collide with existing values in the SDI project.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

Re: Insert a dialog inside SDI(Pls reply me)

Rajkumar R31-May-07 2:37

Rajkumar R

31-May-07 2:37

Hi,
I assume you need dialog to be displayed as SDI View.
You can use CFormView Derived class for your old dialog.
on the resource view using class wizard you can add class
for dialog to CFormView derived class. Then set the
CFormView derived view as SDI view.

Best Regards

Re: Insert a dialog inside SDI(Pls reply me)

Hamid_RT31-May-07 20:20

Hamid_RT

31-May-07 20:20

I think you want to insert CFormView class to your project,right?

WhiteSky

Hiding values in a combobox depending on the changes in another combobox value

aby Skaria31-May-07 0:17

aby Skaria

31-May-07 0:17

Hi,

I need to hide some vales in one combobox depending on the changes in values of another combobox.

Please any one help me to solve this

Thanks
Tony

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