XPLMDrawString
XPLM_API void XPLMDrawString(
float * inColorRGB,
int inXOffset,
int inYOffset,
const char * inChar,
int * inWordWrapWidth, /* Can be NULL */
XPLMFontID inFontID);
This routine draws a NULL terminated string in a given font. Pass in the lower left pixel that the character is to be drawn onto. Also pass the character and font ID. This function returns the x offset plus the width of all drawn characters. The color to draw in is specified as a pointer to an array of three floating point colors, representing RGB intensities from 0.0 to 1.0.