这堆函数干什么的,那里有使用说明?我要受不了了!!

 :( :( :(
GDI.DMBITBLT
GDI.DMCOLORINFO
GDI.DMENUMDFONTS
GDI.DMENUMOBJ
GDI.DMOUTPUT
GDI.DMPIXEL
GDI.DMREALIZEOBJECT
GDI.DMSCANLR
GDI.DMSTRBLT
GDI.ENGINEDELETEFONT
GDI.ENGINEENUMERATEFONT
GDI.ENGINEEXTTEXTOUT
GDI.ENGINEGETCHARWIDTH
GDI.ENGINEGETGLYPHBMP
GDI.ENGINEREALIZEFONT
GDI.ENGINESETFONTCONTEXT
GDI.GETCLIPBOX
GDI.GETENVIRONMENT
GDI.MULDIV
GDI.QUERYABORT
GDI.SETENVIRONMENT
 :P :P :P