Class Bitmap
    'width,height可以理解为像素矩阵的上界 与vbs数组保持一致 而非有多少像素
    Private imagefile
    Private argbdata
    Private fso
    Private picturefrom
    Private formatid
    Private picwidth,picheight
    Private pictureto
    Private ip
    
    Public default Property Get pixel_(x,y)
        pixel_ = Me.pixel(x,y)
    End Property
    
    Private Sub Class_Initialize
        Set imagefile = CreateObject("WIA.ImageFile")
        Set argbdata = CreateObject("WIA.Vector")
        Set ip = CreateObject("WIA.ImageProcess")
        Set fso = CreateObject("scripting.filesystemobject")
    End Sub
    
    Public Sub LoadPicture(ByVal img_address)
        picturefrom = img_address
        imagefile.loadfile picturefrom
        picwidth = imagefile.width - 1
        picheight = imagefile.height - 1
        Set argbdata = imagefile.argbdata 'as wiaVector
        formatid = file.formatid
    End Sub
    
    Private Sub filedelete(ByVal address)
        If fso.fileexists(address) Then
            fso.deletefile(address)
        End If
    End Sub
    
    Public Sub saveto(fileaddress)
        pictureto = fileaddress
        Set im = argbdata.imagefile(picwidth + 1,picheight + 1)
        filedelete pictureto
        im.savefile pictureto
    End Sub
    
    Public Sub save
        Call saveto(picturefrom)
    End Sub
    
    Public Property Get pixel(x,y)
        pixel = argbdata.item(y * (picwidth + 1) + x + 1)
    End Property
    
    Public Property Let pixel(x,y,ByVal num)
        argbdata.item(y * (picwidth + 1) + x + 1) = CLng(num)
    End Property
    
    Public Property Get height()
        height = picheight
    End Property
    
    Public Property Get width()
        width = picwidth
    End Property
    
    Public Sub reset(x,y)
        formatid = "{B96B3CAE-0728-11D3-9D7B-0000F81EF32E}"
        argbdata.clear
        picwidth = x
        picheight = y
        For i = 1 To (x + 1) * (y + 1)
            argbdata.add(CLng(&hffffffff))
        Next
    End Sub
    Public Function RGB(r,g,b)
        RGB = r * &h10000 + g * &h100 + b
    End Function
    
    Public Function tomatrix()
        Dim matrix()
        ReDim matrix(picwidth,picheight)
        For i = 0 To picheight
            For j = 0 To picwidth
                matrix(j,i) = argbdata.item(i * (picwidth + 1) + j + 1)
            Next
        Next
        tomatrix = matrix
    End Function
    
    Public Sub setasmatrix(matrix)
        picwidth = UBound(matrix,1)
        picheight = UBound(matrix,2)
        Me.reset picwidth,picheight
        For i = 0 To picheight
            For j = 0 To picwidth
                argbdata.item(i * (picwidth + 1) + j + 1) = matrix(j,i)
            Next
        Next
    End Sub
    
    Public Sub compress(value)
        Set image = argbdata.imagefile(picwidth + 1,picheight + 1)
        ip.Filters.Add ip.FilterInfos("Convert").FilterID
        ip.Filters(1).Properties("FormatID").Value = formatid
        ip.Filters(1).Properties("Quality").Value = value
        Set image = ip.apply(image)
        Set argbdata = image.argbdata
        picwidth = image.width - 1
        picheight = image.height - 1
        ip.filters.remove(1)
    End Sub
    
    Public Sub rotate(degree)
        Set image = argbdata.imagefile(picwidth + 1,picheight + 1)
        ip.Filters.Add ip.FilterInfos("RotateFlip").FilterID
        ip.Filters(1).Properties("RotationAngle") = degree
        Set image = ip.apply(image)
        Set argbdata = image.argbdata
        picwidth = image.width - 1
        picheight = image.height - 1
        ip.filters.remove(1)
    End Sub
    
    Public Sub crop(Left,top,Right,bottom)
        Set image = argbdata.imagefile(picwidth + 1,picheight + 1)
        ip.Filters.Add ip.FilterInfos("Crop").FilterID
        ip.Filters(1).Properties("Left") = Left
        ip.Filters(1).Properties("Top") = top
        ip.Filters(1).Properties("Right") = Right
        ip.Filters(1).Properties("Bottom") = bottom
        Set image = ip.apply(image)
        Set argbdata = image.argbdata
        picwidth = image.width - 1
        picheight = image.height - 1
        ip.filters.remove(1)
    End Sub
    
    Public Sub scale(width,height)
        Set image = argbdata.imagefile(picwidth + 1,picheight + 1)
        ip.Filters.Add ip.FilterInfos("Scale").FilterID
        ip.Filters(1).Properties("MaximumWidth") = width
        ip.Filters(1).Properties("MaximumHeight") = height
        Set image = ip.apply(image)
        Set argbdata = image.argbdata
        picwidth = image.width - 1
        picheight = image.height - 1
        ip.filters.remove(1)
    End Sub
    
End Class

Function rand(n)
    Randomize
    rand = Int(n * Rnd)
End Function

Set pic = New bitmap
pic.reset 1000,1000
For i = 0 To 1000
    For j = 0 To 1000
        pic.pixel(j,i) = pic.RGB(rand(256),rand(256),rand(256))
    Next
Next
pic.compress 5
pic.saveto "2.jpg"
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class a
public default function c(var)'叫啥名都可以
msgbox var
set c=me
end function
end class
set b=new a
b(1)
所以你也可以这样
set d=(new a)(111)'可以利用类名来直接调用这个默认函数（子程序）
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