CreateFont

The font matching capabilities of Windows NT differ from the capabilities in OS/2. Specifically, some of the parameters that can be passed to the Windows NT version of CreateFont cannot be passed to the OS/2 version of CreateFont:

nCharSet
nOrientation
outPrecis - only OUT_OUTLINE_PRECIS and OUT_STROKE_PRECIS bits are valid
clipPrecis
outQual
nEscapement
fdwPitchAndFamily - ignore pitch (PROPORTIONAL/FIXED), but honor family

The OS/2 version of CreateFont treats OUT_OUTLINE_PRECIS and OUT_STROKE_PRECIS identically. Although either can be passed to the OS/2 version of CreateFont, only OUT_STROKE_PRECIS is returned by GetObject.

In Windows NT, height represents world coordinates as follows:

A default height is to be used by the searching algorithm.

The searching algorithm should look for a font that has the specified character cell height (Em height). -n

 Em height = lMaxBaselinesExt + lInternalLeading

In OS/2, the GPI font matching algorithm does not provide a means to search based on the Em height (cell height); it only considers the lMaxBaselinesExt. So, from a Windows 32-bit application perspective, the OS/2 version of CreateFont acts as if it is passed a negative height.

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