新建一个工程
, t) N. R2 N- C- P9 I2 a3 q( h( R 增加一个picture box和command button) i; @2 M: |- v+ J0 c
加入下面的代码:
8 H+ B: q2 A, \1 v/ a t% d( B Dim tenth As Long: ~ P. v4 M" \* |# v6 @
'条件编译; W8 y; Q' S: L+ V3 O* S6 U
#If Win32 Then
4 ~5 b# }* [5 p8 E1 D0 ]/ `& g g ` Private Declare Function BitBlt Lib "gdi32" _7 X) g0 N" _; a7 |& V
(ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, _& j' |$ R( j% p; J1 l" C7 w. B
ByVal nWidth As Long, ByVal nHeight As Long, _5 E. w2 {9 Y) v& P! V7 _* ~4 V
ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, _ D b3 l: J- f: g/ x
ByVal dwRop As Long) As Long5 I, Q, J/ ?( d
#Else& i! _: R( M: z; X0 ~$ N2 O o
Private Declare Function BitBlt Lib "GDI" (ByVal hDestDC As _
& u, Q ?1 R+ d) O+ `3 h" \ Integer, ByVal x As Integer, ByVal y As Integer, ByVal nWidth _* J" |- Z4 [2 a0 ^8 J4 P0 v' ]% h
As Integer, ByVal nHeight As Integer, ByVal hSrcDC As Integer, _0 V t5 N# \5 q+ y, S @
ByVal xSrc As Integer, ByVal ySrc As Integer, ByVal dwRop As _
2 m: g" X+ W$ A' A) { K. c( g: Z Long) As Integer s7 i% [* w4 o& f) e3 I% m' n% ^
#End If+ L# q- c$ O% p8 V# G1 j
Sub UpdateStatus(FileBytes As Long)- B; ~! O# F. L9 y& c" {+ ~. E
'--------------------------------------------------------------------) ~* X% r( A/ J4 C2 k
' 更新Picture1 status bar
. @2 C0 k; t! E/ w '--------------------------------------------------------------------8 F q" p# Z5 @7 r/ i
Static progress As Long& @8 d8 b) B+ x! E
Dim r As Long
# |+ `. a) R; l g7 n: f$ C Const SRCCOPY = &HCC0020
7 f& Y3 j% n+ x- o. f) N Dim Txt$) Q V8 A# |8 ?( t( ]9 ?
progress = progress + FileBytes
o9 ?1 V6 ]1 ^9 |3 P If progress > Picture1.ScaleWidth Then
0 w& B; q9 l: _5 u progress = Picture1.ScaleWidth2 X: r6 _" Q0 [, e, I' M4 Z
End If8 o" Z: {9 ]& n7 m6 k. z- u( D/ e! c
Txt$ = Format$(CLng((progress / Picture1.ScaleWidth) * 100)) + "%"
3 Z" H3 W/ R; O5 a- K! f6 H$ p Picture1.Cls& K7 w, ?5 g8 X, ~
Picture1.CurrentX = _0 M. F% W. l( {( g9 u7 C8 Z( L5 e
(Picture1.ScaleWidth - Picture1.TextWidth(Txt$)) \ 2) r. E6 V# ^) N' S+ `$ C
Picture1.CurrentY = _/ t; Y6 v% A' }
(Picture1.ScaleHeight - Picture1.TextHeight(Txt$)) \ 29 c+ }; _7 g& A
Picture1.Print Txt$
% j9 I0 |8 V2 h2 ` Picture1.Line (0, 0)-(progress, Picture1.ScaleHeight), _) W; T& |5 d: F/ D
Picture1.ForeColor, BF" c6 d$ |3 e9 n% t1 B# y6 {
r = BitBlt(Picture1.hDC, 0, 0, Picture1.ScaleWidth, _
/ B$ O @+ A1 r7 A* k" E Picture1.ScaleHeight, Picture1.hDC, 0, 0, SRCCOPY)
I5 n9 k' n5 G1 d' n( B End Sub( d8 x4 \. V" ]# }$ ?. r& p* N
Private Sub Command1_Click()5 R% Z; ^' J, A; L* j# N1 V
Picture1.ScaleWidth = 109
1 k& D+ M1 i7 {0 s, y3 i tenth = 10, g: M0 N B- g2 g }
For i = 1 To 114 R* K& O, m0 z* S
Call UpdateStatus(tenth)
: E5 n% J' e2 {6 B9 P. ^* l# z0 P x = Timer5 k6 g- p& `, Y6 t" ], u
While Timer < x + 0.75; ~6 H: R" J4 f [3 y. |
DoEvents
E' b1 o8 b: r9 b; H2 Q6 y4 y* I6 W Wend
2 ~5 M% T$ t4 J2 h* C/ f7 g% d5 ^ Next
$ m0 N2 p$ D& O% y% p End Sub" C/ j/ z7 B1 O7 H2 s
Private Sub Form_Load()
+ P5 E3 w. @8 X! i, b/ y/ s5 t3 f Picture1.FontBold = True
* z( p3 T3 ^1 q; U- F q0 M Picture1.AutoRedraw = True
1 ?$ `7 n5 W; n$ z/ l* Y$ E8 m Picture1.BackColor = vbWhite
' J1 {, p4 z' i8 a: |6 m Picture1.DrawMode = 108 x/ i# h' Q% Y" _8 ^% L( b; c: y
Picture1.FillStyle = 0
4 }/ S/ ~( }+ s6 K9 p Picture1.ForeColor = vbBlue
" @$ c" t$ e: _ End Sub0 T3 E$ [: E- ? W9 ]
F5 运行, 点击 Command1就可以看到效果. |