[wxCode-users] centering a string to a point with wxPdfDoc

[Luca C. <luc...@se...>]

Hello,

I wrote a simple function which draws a string with the its bounding box  
centered to the given pCenter parameter:

void drawCenteredText (wxPdfDocument& pPDF, wxString const& pString,  
Vector2f const& pCenter)
{
   float lHeightMM = float (pPDF.GetFontSize ()) / 72.f * 2.54f / 10.f;
   //Height in mm.
   double lWidthMM = pPDF.GetStringWidth (pString);//Width in mm.
   pPDF.SetXY (pCenter.x - lWidthMM / 2.f, pCenter.y - lHeightMM / 2.f);
   pPDF.Cell (0, 0, pString);
}

To roughly center the string I need to know how much the actual font  
height is in millimeters, and for that purpose i use a formula that  
converts points to mm, assuming that a point is 1/72 inch, and then I  
convert inch to mm. Is there any better way than this approach?

Greetings,
Luca