EObtainInfoA

Inquire tagged font and/or glyph metrics. (V47)

EObtainInfo

varargs form of EObtainInfoA.

This function is similar to bullet.library/ObtainInfoA() but does not use a (hidden) "BulletBase" variable that may hold the library base of the wrong font engine if not set properly. It uses EEngine->ege_BulletBase as base of the font engine library to be called.

This function accepts a tag list whose tag field elements are valid for inquiry, and whose associated data fields are pointers to the destination in which to place the requested data.

Tag items that refer to data indirectly (OT_Indirect is set) return pointers that may be allocated or cached by the library. This data must be treated as read-only data. When the application is done with the data acquired via EObtainInfoA(), it must perform a EReleaseInfoA() to allow the library to release the data.

EEngine

the glyph engine acquired via EOpenEngine() or OpenOutlineFont().

tagList

a tag list containing OT_ tags valid for inquiry paired with the destination pointers for the inquiry results. All destinations are longwords, whether they are pointers or values, and regardless of whether the value could fit in a smaller variable.

This function returns a zero success indication, or a non-zero error code.

The function may return with a non-zero error code before it has parsed the whole tag list. The function may not set the pointers you passed in to NULL when an error occured. Be careful to ensure that either the pointers you pass in are set to NULL or that you only call EReleaseInfoA() if EObtainInfoA() returned no error code and the EObtainInfoA() tag list did contain only one pointer.

bullet.library/ObtainInfoA(), EReleaseInfoA(), diskfont/diskfonttag.h, diskfont/oterrors.h