请教下在image控件中显示图片的问题

2008-09-03 11:24:17 349 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

10、wpf显示图片方式一: Image控件整理下wpf image控件显示图片的方式，分为本地图片和内存图片（来自于网络交互中的图片）阅读详情



'如何做才能通过图片的(长 与 宽)和(图片的像素)来显示图片呢?(就是打开时能像windows的图片和传真查看器一样,



'根据图片的(长 与 宽)和(图片的像素)来显示图片).

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Private Sub Form_Resize()'这样做在显示时只是作了适应大小的调整.....

Picture1.Top = 100

Picture1.Left = 100

Picture1.Width = Me.ScaleWidth - Picture1.Left - 100

Picture1.Height = Me.ScaleHeight - Picture1.Top - 100

End Sub

    

Private Sub Picture1_Resize()

Image1.Top = 0

Image1.Left = 0

Image1.Width = Picture1.Width

Image1.Height = Picture1.Height

Image1.Stretch = True

End Sub

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'以下代码是来自下载的源码. 但看不懂是什么意思.               (请教各位,如果要实现这样的效果该如何该呢?谢谢各位!)

Public Sub LoadPreview(FileName As String)

    Dim ximg As cIMAGE

    Dim PicRatio, xRatio As Single

    

    Set ximg = New cIMAGE

    

    With PicPreview

        PicRatio = .Width / .Height

        ximg.Load FileName

        xRatio = ximg.ImageWidth / ximg.ImageHeight

        If ximg.ImageHeight < ximg.ImageWidth Then

            ximg.ReSize .Width * 15 / 16, 0, False

        Else

            ximg.ReSize 0, .Height * 15 / 16, False

        End If

        ImgPreview.Visible = False

        ImgPreview.Left = (.ScaleWidth - ximg.ImageWidth) / 2

        ImgPreview.Top = (.ScaleHeight - ximg.ImageHeight) / 2

        ImgPreview.Width = ximg.ImageWidth

        ImgPreview.Height = ximg.ImageHeight

        ImgPreview.Picture = ximg.Picture

        ImgPreview.Visible = True

        .Tag = FileName

    End With

    Set ximg = Nothing

    

    Exit Sub

    Resume Next

End Sub