Getting mad showing a template!

[NasterMain]

This time I definitely need your help, I tried every way my brain found for three days and now I'm out of ideas.


The problem: I need to show a dialog template. Dialog template measures are in Dialog Units, which depend on the dialog font's height'n'width.

Premise: I already read a lot and a lot of times the articles:
http://support.microsoft.com/default...b;EN-US;145994
and
http://support.microsoft.com/kb/125681/EN-US/#top




My idea was this:
I get system font width and system font height, then I get dialog custom font's width and height and I can perform the conversion with the formula
horz pixels == 2 * horz dialog units * (average char width of dialog font
/ average char width of system font)
vert pixels == 2 * vert dialog units * (average char height of dialog font
/ average char height of system font)


Easy to say...

The code I used to get system font size and dialog font's size are:


//TO GET SYSTEM FONT AVG VALUES
CRect rc( 0, 0, 4, 8 );

MapDialogRect( &rc );
int baseUnitY = rc.bottom;
int baseUnitX = rc.right;
TRACE("baseUnitX = %d\n", baseUnitX);
TRACE("baseUnitY = %d\n", baseUnitY);


//TO GET DIALOG'S FONT AVG VALUES
CPaintDC dc(this); // contesto di periferica per il disegno

SelectObject(dc,&m_font);
TEXTMETRIC tm;
CSize size;
GetTextMetrics(dc,&tm);
GetTextExtentPoint32(dc,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",52,&size);
int avgWidth = (size.cx/26+1)/2;
int avgHeight = (WORD)tm.tmHeight;

TRACE("baseUnitX = %d\n", avgWidth);
TRACE("baseUnitY = %d\n", avgHeight);



SecondPremise: m_font is a CFont variable loaded this way:
LOGFONT lf;
memset(&lf, 0, sizeof(LOGFONT)); // Clear out structure.
lf.lfHeight = 8; // Request a tot-pixel-high font
strcpy(lf.lfFaceName, "Tw Cen MT Condensed"); // with face name we read
//lf.lfHeight = 15; // Request a tot-pixel-high font
//strcpy(lf.lfFaceName, "MS Sans Serif"); // with face name we read
m_font.CreateFontIndirect(&lf); // Create the font.

Note that m_font is correctly initialized and is NOT destroyed, it is a public variable in the mfc dialog's class. And i used it to set the font to some control, so.. no errors here.

Why coordinates I get are totally WRONG?

Am I getting wrong in something? I also thought about creating a dialog with CreateIndirect, but couldn't find good examples. If you can, help me understanding why I am getting wrong, imho it is all right, but results are wrong