vb浏览文件夹:浏览文件夹中的图片(用VB实现)-vb教程



sp;                                           浏览文件夹中图片(用VB实现)
     首先要新建个工程,在Form1中添加dirlistboxControl控件,drivelistboxControl控件,filelistboxControl控件,comboboxControl控件textboxControl控件vscrollbarControl控件和个command1Control控件
然后在代码框中输入以下代码:

Option Explicit


private Declare Function FindFirstFile Lib \"kernel32\" Alias \"FindFirstFileA\" (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As Long
private Declare Function FindClose Lib \"kernel32\" (ByVal hFindFile As Long) As Long
private Declare Function FindNextFile Lib \"kernel32\" Alias \"FindNextFileA\" (ByVal hFindFile As Long, lpFindFileData As WIN32_FIND_DATA) As Long
private Const MAX_PATH = 260
private Type FILETIME
        dwLowDateTime As Long
        dwHighDateTime As Long
End Type
private Type WIN32_FIND_DATA
        dwFileAttributes As Long
        ftCreationTime As FILETIME
        ftLastAccessTime As FILETIME
        ftLastWriteTime As FILETIME
        nFileSizeHigh As Long
        nFileSizeLow As Long
        dwReserved0 As Long
        dwReserved1 As Long
        cFileName As String * MAX_PATH
        cAlternate As String * 14
End Type

Dim Pic As Object
Private Sub Command1_Click
Dim obj As Object
Dim pcname As String
Dim i As Long, j As Long, counter As Long
Dim wfd As WIN32_FIND_DATA
Dim source As String, piname As String
Dim hfile As Long
Dim nfile As Long
Dim filename As String
Dim x As Long, length1 As Long, width1 As Long
counter = 0
Set Pic = Form1.Controls.Add(\"VB.PictureBox\", \"test\")
Pic.Visible = True
If Right(Dir1.Path, 1) <> \"\\\" Then
  source = Dir1.Path & \"\\\" & Text1.Text
Else
  source = Dir1.Path & Text1.Text
End If
hfile = FindFirstFile(source, wfd)
If hfile = -1 Then
 MsgBox \"没有找到文件\"
End If
counter = counter + 1
Do
nfile = FindNextFile(hfile, wfd)
If nfile <> 0 Then
counter = counter + 1
End If
Loop Until nfile = 0
ReDim filename(counter) As String
hfile = FindFirstFile(source, wfd)
filename(0) = wfd.cFileName
For i = 1 To counter
 nfile = FindNextFile(hfile, wfd)
 filename(i) = wfd.cFileName
Next i
If Right(Dir1.Path, 1) <> \"\\\" Then
source = Dir1.Path & \"\\\"
Else
source = Dir1.Path
End If
Call FindClose(hfile)

For i = 0 To (counter / 4)
For j = 0 To 3
piname = \"picture\" & j + 1 + i * 4
Set obj = Form1.Controls.Add(\"VB.Image\", piname)
obj.Width = 1500
obj.Height = 1500
obj.Stretch = True
Set obj.Container = Pic
obj.Left = j * obj.Width
obj.Top = i * obj.Height
If (j + 1 + i * 4) > counter Then
GoTo line
End If
obj.Picture = LoadPicture(source & (filename(j + 1 + i * 4)))
obj.Visible = True
Next j
Next i
line:
width1 = j * obj.Width
length1 = i * obj.Height
Pic.Width = 4 * obj.Width
Pic.Height = length1
Pic.Left = Dir1.Left + Dir1.Width
Pic.Top = 0
width1 = 4 * obj.Width
length1 = i * obj.Height
VScroll1.Min = 0
VScroll1.Max = 32767
End Sub
Private Sub Dir1_Change
File1.filename = Dir1.Path
End Sub
Private Sub Drive1_Change
Dir1.Path = Drive1.Drive
End Sub
Private Sub Form_Load
Combo1.Text = \"*.jpg\"
Combo1.AddItem \"*.bmp\"
Combo1.AddItem \"*.g\"
VScroll1.LargeChange = 200
VScroll1.SmallChange = 50
Text1.Text = Combo1.Text
End Sub
Private Sub VScroll1_Change
Pic.Top = 0 - VScroll1.Value
End Sub
在VB6.0+WINME环境下调试通过

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Tags:  vb创建文件夹 vb打开文件夹 vb删除文件夹 vb浏览文件夹

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