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. :)

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.

CPallini

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.

garfield185

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:

Time to come clean... Vive y deja vivir / Live and let live Javier

CPallini

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. :)

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.

garfield185

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

David Crow

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

garfield185

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

CPallini

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 :-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.

garfield185

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

Font size