得到或设置透明控制的背景。  

 

[Visual Basic]
Public Property BackgroundTransparent As Boolean 

[C#]
public bool BackgroundTransparent

观察:

缺省值中被设立的这样的财产上 False.

如果会员 alpha 的颜色图形要素的管制则成立于零 这样元素不仅不来设计，但是区域从占领它变得透明。

 

因此在图的例子在插入了它PictureBox与的形式与设定物产的价值部份地重叠了瘤:

 

 [Visual Basic]

Me.Knob1.Appearance.ArcEnd = 290.0!
Me.Knob1.Appearance.ArcStart = 250.0!
Me.Knob.Appearance.BackgroundScale.BackgroundScale = False
Me.Knob1.Appearance.BackgroundScale.BackgroundScaleWidth = 50
Me.Knob1.Appearance.BackgroundScale.FirstColor = System.Drawing.Color.Blue
Me.Knob1.Appearance.BackgroundScale.FourthColor = System.Drawing.Color.Red
Me.Knob1.Appearance.BackgroundScale.Gradient = True
Me.Knob1.Appearance.BackgroundScale.SecondColor = System.Drawing.Color.Green
Me.Knob1.Appearance.BackgroundScale.ThirdColor = System.Drawing.Color.Yellow
Me.Knob1.Appearance.BorderProperties.BorderLight = System.Drawing.Color.White
Me.Knob1.Appearance.BorderProperties.BorderShadow = System.Drawing.Color.Black
Me.Knob1.Appearance.BorderProperties.BorderWidth = CType(10, Short)
Me.Knob1.Appearance.CursorProperties.CursorColor = System.Drawing.Color.Blue
Me.Knob1.Appearance.CursorProperties.CursorType = LabDevTools.CursorProperties.CursorForm.Triangular
Me.Knob1.Appearance.CursorProperties.CursorWidth = 3
Me.Knob1.Appearance.CursorProperties.TraceCursor = False
Me.Knob1.Appearance.Divisions.ArcBaseColor = System.Drawing.Color.Red
Me.Knob1.Appearance.Divisions.DivisionLength = CType(10, Short)
Me.Knob1.Appearance.Divisions.Divisions = True
Me.Knob1.Appearance.Divisions.DivisionWidth = CType(5, Short)
Me.Knob1.Appearance.Divisions.MayorColor = System.Drawing.Color.Red
Me.Knob1.Appearance.Divisions.MediumColor = System.Drawing.Color.FromArgb(CType(0, Byte), CType(255, Byte), CType(64, Byte))
Me.Knob1.Appearance.Divisions.MinorColor = System.Drawing.Color.Blue
Me.Knob1.Appearance.Divisions.NumberOfDivisions = CType(10, Short)
Me.Knob1.Appearance.FrontColor = System.Drawing.Color.Transparent
Me.Knob1.Appearance.GradientStyle = System.Drawing.Drawing2D.LinearGradientMode.ForwardDiagonal
Me.Knob1.Appearance.Labels = True
Me.Knob1.Appearance.Radius = 62.0!
Me.Knob1.Appearance.Style = LabDevTools.Appearance.StyleKnob.Style3D
Me.Knob1.BackColor = System.Drawing.Color.Transparent
Me.Knob1.BackgroundTransparent = True
Me.Knob1.Cursor = System.Windows.Forms.Cursors.Hand
Me.Knob1.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!)
Me.Knob1.ForeColor = System.Drawing.Color.Black
Me.Knob1.KeyInput.Increment = 1.0!
Me.Knob1.KeyInput.KeyDecrement = LabDevTools.KeyInput.Keys.PageDown
Me.Knob1.KeyInput.KeyIncrement = LabDevTools.KeyInput.Keys.PageUp
Me.Knob1.KeyInput.KeyInput = True
Me.Knob1.Language = LabDevTools.Knob.LocalLanguage.Italian
Me.Knob1.Location = New System.Drawing.Point(768, 240)
Me.Knob1.Name = "Knob1"
Me.Knob1.ScaleMeasurement.Format = "Default"
Me.Knob1.ScaleMeasurement.Invert = False
Me.Knob1.ScaleMeasurement.Unit = ""
Me.Knob1.Size = New System.Drawing.Size(216, 216)
Me.Knob1.TabIndex = 14
Me.Knob1.Values.Max = 10
Me.Knob1.Values.Max_Visible = True
Me.Knob1.Values.Min = 0
Me.Knob1.Values.Min_Visible = True
Me.Knob1.Values.Tooltip = True
Me.Knob1.Values.Value = 0
Me.Knob1.Values.ValueInString = "0"

 

[C#]

this.knob1.Appearance.ArcEnd = 290;

this.knob1.Appearance.ArcStart = 250;

this.knob1.Appearance.BackgroundScale.BackgroundScale = false;

this.knob1.Appearance.BackgroundScale.BackgroundScaleWidth = 50;

this.knob1.Appearance.BackgroundScale.FirstColor = System.Drawing.Color.Blue;

this.knob1.Appearance.BackgroundScale.FourthColor = System.Drawing.Color.Red;

this.knob1.Appearance.BackgroundScale.Gradient = true;

this.knob1.Appearance.BackgroundScale.SecondColor = System.Drawing.Color.Green;

this.knob1.Appearance.BackgroundScale.ThirdColor = System.Drawing.Color.Yellow;

this.knob1.Appearance.BorderProperties.BorderLight = System.Drawing.Color.White;

this.knob1.Appearance.BorderProperties.BorderShadow = System.Drawing.Color.Black;

this.knob1.Appearance.BorderProperties.BorderWidth = 10;

this.knob1.Appearance.CursorProperties.CursorColor = System.Drawing.Color.Blue;

this.knob1.Appearance.CursorProperties.CursorType = LabDevTools.CursorProperties.CursorForm.Triangular;

this.knob1.Appearance.CursorProperties.CursorWidth = 3;

this.knob1.Appearance.CursorProperties.TraceCursor = false;

this.knob1.Appearance.Divisions.ArcBaseColor = System.Drawing.Color.Red;

this.knob1.Appearance.Divisions.DivisionLength = 10;

this.knob1.Appearance.Divisions.Divisions = true;

this.knob1.Appearance.Divisions.DivisionWidth = 5;

this.knob1.Appearance.Divisions.MayorColor = System.Drawing.Color.Red;

this.knob1.Appearance.Divisions.MediumColor = System.Drawing.Color.FromArgb(0, 255,64);

this.knob1.Appearance.Divisions.MinorColor = System.Drawing.Color.Blue;

this.knob1.Appearance.Divisions.NumberOfDivisions = 10;

this.knob1.Appearance.FrontColor = System.Drawing.Color.Transparent;

this.knob1.Appearance.GradientStyle = System.Drawing.Drawing2D.LinearGradientMode.ForwardDiagonal;

this.knob1.Appearance.Labels = true;

this.knob1.Appearance.Radius = 62;

this.knob1.Appearance.Style = LabDevTools.Appearance.StyleKnob.Style3D;

this.knob1.BackColor = System.Drawing.Color.Transparent;

this.knob1.BackgroundTransparent = true;

this.knob1.Cursor = System.Windows.Forms.Cursors.Hand;

this.knob1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25);

this.knob1.ForeColor = System.Drawing.Color.Black;

this.knob1.KeyInput.Increment = 1;

this.knob1.KeyInput.KeyDecrement = LabDevTools.KeyInput.Keys.PageDown;

this.knob1.KeyInput.KeyIncrement = LabDevTools.KeyInput.Keys.PageUp;

this.knob1.KeyInput.KeyInput = true;

this.knob1.Language = LabDevTools.Knob.LocalLanguage.Italian;

this.knob1.Location = new System.Drawing.Point(768, 240);

this.knob1.Name = "knob1";

this.knob1.ScaleMeasurement.Format = "Default";

this.knob1.ScaleMeasurement.Invert = false;

this.knob1.ScaleMeasurement.Unit = "";

this.knob1.Size = new System.Drawing.Size(216, 216);

this.knob1.TabIndex = 14;

this.knob1.Values.Max = 10;

this.knob1.Values.Max_Visible = true;

this.knob1.Values.Min = 0;

this.knob1.Values.Min_Visible = true;

this.knob1.Values.Tooltip = true;

this.knob1.Values.Value = 0;

this.knob1.Values.ValueInString = "0";

 

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