Thread: Setting the font size

In XWIndows how do I set the font size to draw with? There's probably something simple I'm missing on this.

I know you can get a font's size with something like this:

Code:

int FontSize(Display Disp, char *FontName)
{
    XFontStruct *FontInfo;
    int Height;
    FontInfo = XLoadQueryFont(Disp, "fixed");
    Height =  FontInfo.ascent + FontInfo.descent
    XFreeFont(Disp, FontInfo);
    return Height;
}

But how can I tell it I want to use font size 18 when I output text?