Type Prefixes

In this section, you'll find tables that include prefixes for various data types and control types.

Table A-1 Variables Prefixes

Prefix	Data Type
byt	Byte
b	Boolean
cur	Currency
d	Double
dte	Date
f	Single
hf	File handle (Long)
hwnd	Window handle (Long)
h(... lowercase)	Handle to something (Long)
l	Long
n	Integer
o	Object
s	String
v	Variant

Table A-2 Modifiers and Special Types Prefixes

Prefix	Data Type
a	Array <of another type>
C	Class or class instance
t	User-defined type or instance
e	Enumerated type or instance
p	Pointer (used with API calls)
pcb	Pointer to a callback function (used with AddressOf)

Table A-3 Data Objects: DAO Prefixes

Prefix	Visual Basic Data Type
bk	SelBookmarks
ct	Container
db	Database
dc	Document
ds	Dynaset
er	Errors
fd	Field
gp	Group
ix	Index
pa	Parameter
pr	Property
qd	QueryDef
rs	Recordset
rl	Relation
ss	Snapshot
tb	Table
td	TableDef
us	User
wk	Workspace

Table A-4 Data Objects: RDO Prefixes

Prefix	Visual Basic Data Type
rdoEng	rdoEngine
rdoEnv	rdoEnvironment
rdoConn	rdoConnection
rdoTbl	rdoTable
rdoCol	rdoColumn
rdoPrepS	rdoPreparedStatement
rdoParam	rdoParameter
rdoRS	rdoResultset
rdoErr	rdoError

Table A-5 Controls Prefixes

Prefix	Control Type Description
ani	Animation button
bed	Pen BEdit
cbo	Combobox/Dropdown Listbox
chk	Checkbox
clp	Picture Clip
cmd	Command Button
com	Communications
dat	Data Control
dir	Directory Listbox
dlg	Common dialog
drv	Drive Listbox
fil	File Listbox
fra	Frame
frm	Form
gau	Gauge
gpb	Group Pushbutton
gra	Graph
grd	Grid
hed	Pen HEdit
hsb	Horizontal scroll bar
img	Image
ink	Pen Ink
key	Keyboard key status
lab	Label
lin	Line
lst	Listbox
mci	MCI
mnu	Menu
mpm	MAPI Message
mps	MAPI Session
ole	OLE Client
opt	Option Button
Prefix	Control Type Description
out	Outline Control
pic	Picture
pnl	3D Panel
rdc	Remote Data Control
shp	Shape
spn	Spin Control
tab	SS Tab Control
tmr	Timer
txt	Textbox
vsb	Vertical scroll bar
iml	ImageList
lvw	ListView
pbr	ProgressBar
rtf	RichTextBox
sld	Slider
sbr	StatusBar
tab	Tabstrip
tbr	Toolbar
tvw	TreeView

Table A-6 Data-Bound Controls Prefixes

Prefix	Control Type Description
dbcbo	Databound Combobox/Dropdown Listbox
dblst	Databound Listbox
dbgrd	Databound Grid