ASP中取得图片宽度和高度的类(无组件)
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Class ImgWHInfo '获取图片宽度和高度的类,支持JPG,GIF,PNG,BMP
Dim ASO
Private Sub Class_Initialize
Set ASO=Server.CreateObject("ADODB.Stream")
ASO.Mode=3
ASO.Type=1
ASO.Open
End Sub
Private Sub Class_Terminate
Err.Clear
Set ASO=Nothing
End Sub
Private Function Bin2Str(Bin)
Dim I, Str
For I=1 To LenB(Bin)
clow=MidB(Bin,I,1)
If ASCB(clow)<128 Then
Str = Str & Chr(ASCB(clow))
Else
I=I+1
If I <= LenB(Bin) Then Str = Str & Chr(ASCW(MidB(Bin,I,1)&clow))
End If
Next
Bin2Str = Str
End Function
Private Function Num2Str(Num,Base,Lens)
Dim Ret
Ret = ""
While(Num>=Base)
Ret = (Num Mod Base) & Ret
Num = (Num - Num Mod Base)/Base
Wend
Num2Str = Right(String(Lens,"0") & Num & Ret,Lens)
End Function
Private Function Str2Num(Str,Base)
Dim Ret,I
Ret = 0
ASP中取得图片宽度和高度的类(无组件)
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