^^ 创建setup类型的进度条（vb6） ^^

最新推荐文章于 2020-12-12 10:08:47 发布

原创最新推荐文章于 2020-12-12 10:08:47 发布 · 362 阅读

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#vb #integer #command #timer #function #button

本文介绍如何使用VB6创建一个类似安装程序中的进度条。通过声明API函数BitBlt并结合Picturebox控件来更新进度显示，同时展示了完整的代码实例。

^^ 创建setup类型的进度条（vb6） ^^

新建一个工程
增加一个picture box和command button

加入下面的代码：Dim tenth As Long'条件编译#If Win32 ThenPrivate Declare Function BitBlt Lib "gdi32" _(ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, _ByVal nWidth As Long, ByVal nHeight As Long, _ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, _ByVal dwRop As Long) As Long#ElsePrivate Declare Function BitBlt Lib "GDI" (ByVal hDestDC As _Integer, ByVal x As Integer, ByVal y As Integer, ByVal nWidth _As Integer, ByVal nHeight As Integer, ByVal hSrcDC As Integer, _ByVal xSrc As Integer, ByVal ySrc As Integer, ByVal dwRop As _Long) As Integer#End IfSub UpdateStatus(FileBytes As Long)'--------------------------------------------------------------------' 更新Picture1 status bar'--------------------------------------------------------------------    Static progress As Long    Dim r As Long    Const SRCCOPY = &HCC0020    Dim Txt$    progress = progress + FileBytes    If progress > Picture1.ScaleWidth Then        progress = Picture1.ScaleWidth    End If    Txt$ = Format$(CLng((progress / Picture1.ScaleWidth) * 100)) + "%"    Picture1.Cls    Picture1.CurrentX = _    (Picture1.ScaleWidth - Picture1.TextWidth(Txt$)) / 2    Picture1.CurrentY = _    (Picture1.ScaleHeight - Picture1.TextHeight(Txt$)) / 2    Picture1.Print Txt$    Picture1.Line (0, 0)-(progress, Picture1.ScaleHeight), _    Picture1.ForeColor, BF    r = BitBlt(Picture1.hDC, 0, 0, Picture1.ScaleWidth, _        Picture1.ScaleHeight, Picture1.hDC, 0, 0, SRCCOPY)End SubPrivate Sub Command1_Click()    Picture1.ScaleWidth = 109    tenth = 10    For i = 1 To 11        Call UpdateStatus(tenth)        x = Timer        While Timer < x + 0.75            DoEvents        Wend    NextEnd SubPrivate Sub Form_Load()    Picture1.FontBold = True    Picture1.AutoRedraw = True    Picture1.BackColor = vbWhite    Picture1.DrawMode = 10    Picture1.FillStyle = 0    Picture1.ForeColor = vbBlueEnd Sub