在vb.net中的窗体上显示图标

当你有支持阿尔法透明度的图像格式时,ImageList并不理想(至少以前是这样;我最近没有经常使用它们),所以你最好从磁盘上的文件或资源中加载图标。如果从磁盘加载,可以使用以下方法:

' Function for loading the icon from disk in 48x48 size '
Private Function LoadIconFromFile(ByVal fileName As String) As Icon
    Return New Icon(fileName, New Size(48, 48))
End Function

' code for loading the icon into a PictureBox '
Dim theIcon As Icon = LoadIconFromFile("C:\path\file.ico")
pbIcon.Image = theIcon.ToBitmap()
theIcon.Dispose()

' code for drawing the icon on the form, at x=20, y=20 '
Dim g As Graphics = Me.CreateGraphics()
Dim theIcon As Icon = LoadIconFromFile("C:\path\file.ico")
g.DrawIcon(theIcon, 20, 20)
g.Dispose()
theIcon.Dispose()

Private Function LoadIconFromFile(ByVal fileName As String) As Icon
    Dim result As Icon
    Dim assembly As System.Reflection.Assembly = Me.GetType().Assembly
    Dim stream As System.IO.Stream = assembly.GetManifestResourceStream((assembly.GetName().Name & ".file.ico"))
    result = New Icon(stream, New Size(48, 48))
    stream.Dispose()
    Return result
End Function

您需要一个picturebox控件将图像放置在窗体上。

pct.Image = Image.FromFile("c:\Image_Name.jpg")  'file on disk

或

pct.Image = My.Resources.Image_Name 'project resources

或

pct.Image = imagelist.image(0)  'imagelist

  Me.Icon = Icon.FromHandle(DirectCast(ImgLs_ICONS.Images(0), Bitmap).GetHicon())

您可以使用标签控件来执行相同的操作。我用一个在picturebox控件中的图像上画了一个点。它可能比使用PictureBox的开销少。

        Dim label As Label = New Label()
        label.Size = My.Resources.DefectDot.Size
        label.Image = My.Resources.DefectDot ' Already an image so don't need ToBitmap 
        label.Location = New Point(40, 40)
        DefectPictureBox.Controls.Add(label)

Private Sub DefectPictureBox_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles DefectPictureBox.Paint
    e.Graphics.DrawIcon(My.Resources.MyDot, 20, 20)
End Sub