C# WinForm 自定义控件，DataGridView背景透明，TabControl背景透明
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C# WinForm 自定义控件，DataGridView背景透明，TabControl背景透明
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注意: 以下代碼，屬性直接賦值的語法糖要vs2015以上才支持。 1 using System.ComponentModel;
2 using System.Drawing;
3 using System.Windows.Forms;
4 namespace RaywindStudio.Components
5 {
6 public class TabCtrlX : TabControl
7 {
8 public TabCtrlX()
9 {
10 InitializeComponent();
11 this.SetStyle(ControlStyles.UserPaint, true);//用戶自己繪制
12 this.SetStyle(ControlStyles.ResizeRedraw, true);
13 this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
14 this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
15 //讓控件支持透明色
16 this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
17 }
18
19 #region designer
20 /// <summary>
21 /// 必需的設計器變量。
22 /// </summary>
23 private System.ComponentModel.IContainer components = null;
24
25 /// <summary>
26 /// 清理所有正在使用的資源。
27 /// </summary>
28 /// <param name="disposing">如果應釋放托管資源，為 true；否則為 false。</param>
29 protected override void Dispose(bool disposing)
30 {
31 if (disposing && (components != null))
32 {
33 components.Dispose();
34 }
35 base.Dispose(disposing);
36 }
37
38 #region 組件設計器生成的代碼
39
40 /// <summary>
41 /// 設計器支持所需的方法 - 不要
42 /// 使用代碼編輯器修改此方法的內容。
43 /// </summary>
44 private void InitializeComponent()
45 {
46 components = new System.ComponentModel.Container();
47 }
48
49 #endregion
50 #endregion
51 //[EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
52 public override Color BackColor {
53 get {
54 return Color.FromArgb(Alpha, BgColor);
55 }
56 set {
57 Alpha = BackColor.A;
58 BgColor = BackColor;
59 }
60 }
61
62 [DisplayName("Color.Alpha")]
63 [CategoryAttribute("Color"), DescriptionAttribute("Opacity不透明度0--255")]
64 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
65 public byte Alpha { get; set; } = 16;
66
67 [DisplayName("Color.BgColor")]
68 [CategoryAttribute("Color"), DescriptionAttribute("TabControl工作區背景色")]
69 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
70 public Color BgColor { get; set; } = Color.White;
71
72 [DisplayName("Color.BordColor")]
73 [CategoryAttribute("Color"), DescriptionAttribute("TabControl邊線顏色")]
74 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
75 public Color BordColor { get; set; } = Color.LightGray;
76
77 [DisplayName("Color.TitleColor")]
78 [CategoryAttribute("Color"), DescriptionAttribute("TabPage標頭背景色")]
79 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
80 public Color TitleColor { get; set; } = Color.WhiteSmoke;
81
82 [DisplayName("Color.TitleSeleColor")]
83 [CategoryAttribute("Color"), DescriptionAttribute("TabPage標頭選中背景色")]
84 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
85 public Color TitleSeleColor { get; set; } = Color.White;
86
87 [DisplayName("Color.TextColor")]
88 [CategoryAttribute("Color"), DescriptionAttribute("TabPage標題顏色")]
89 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
90 public Color TextColor { get; set; } = Color.Gray;
91
92 [DisplayName("Color.TextSeleColor")]
93 [CategoryAttribute("Color"), DescriptionAttribute("TabPage選中標題顏色")]
94 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)]
95 public Color TextSeleColor { get; set; } = Color.Black;
96
97 protected override void OnPaint(PaintEventArgs e)
98 {
99 this.DrawTitle(e.Graphics);
100 base.OnPaint(e);
101 DrawBorder(e.Graphics);
102 }
103
104 protected void DrawBorder(Graphics g)
105 {
106 g.DrawRectangle(new Pen(BordColor, 1F), ClientRectangle);
107 }
108
109 protected void DrawTitle(Graphics g)
110 {
111 StringFormat sf = new StringFormat();
112 sf.Alignment = StringAlignment.Center;
113 sf.LineAlignment = StringAlignment.Center;
114 using (SolidBrush sb = new SolidBrush(SystemColors.Control))
115 {
116 for (int i = 0; i < this.TabPages.Count; i++)
117 {
118 Rectangle rect = this.GetTabRect(i);
119 if (this.SelectedIndex == i)
120 {
121 sb.Color = TitleSeleColor;
122 g.FillRectangle(sb, rect);
123 g.DrawString(this.TabPages[i].Text, this.Font, new SolidBrush(TextSeleColor), rect, sf);
124 }
125 else
126 {
127 sb.Color = TitleColor;
128 g.FillRectangle(sb, rect);
129 g.DrawString(this.TabPages[i].Text, this.Font, new SolidBrush(TextColor), rect, sf);
130 }
131 }
132 }
133 }
134 }
135 } TabCtrlX
?
1 using System.ComponentModel; 2 using System.Drawing; 3 using System.Windows.Forms; 4 5 namespace RaywindStudio.Components 6 { 7 8 public partial class DataGViewX : DataGridView 9 { 10 public DataGViewX() 11 { 12 InitializeComponent(); 13 this.SetStyle(ControlStyles.UserPaint, true);//用戶自己繪制 14 this.SetStyle(ControlStyles.ResizeRedraw, true); 15 this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); 16 this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true); 17 this.SetStyle(ControlStyles.SupportsTransparentBackColor, true); 18 } 19 20 private System.ComponentModel.IContainer components = null; 21 protected override void Dispose(bool disposing) 22 { 23 if (disposing && (components != null)) 24 { 25 components.Dispose(); 26 } 27 base.Dispose(disposing); 28 } 29 private void InitializeComponent() 30 { 31 components = new System.ComponentModel.Container(); 32 } 33 34 [DescriptionAttribute("自定義背景圖：當BackTransparent=True時，忽略此設置，直接使用父容器背景")] 35 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)] 36 public Image BackImage { get; set; } 37 38 [DescriptionAttribute("背景透明：當True時，直接使用父容器背景。否則使用BackImage填充背景")] 39 [EditorBrowsable(EditorBrowsableState.Always), Browsable(true)] 40 public bool BackTransparent { get; set; } = true; 41 42 protected override void PaintBackground(Graphics graphics, Rectangle clipBounds, Rectangle gridBounds) 43 { 44 base.PaintBackground(graphics, clipBounds, gridBounds); 45 if(BackTransparent) 46 BackImage = GetBackImage(this.Parent, this.Left, this.Top, this.Width, this.Height); 47 if (BackImage != null) 48 graphics.DrawImage(BackImage, clipBounds); 49 } 50 51 public Bitmap GetBackImage(Control parent, int x, int y, int w, int h) 52 { 53 if (parent.BackgroundImage != null) 54 { 55 Bitmap bt = new Bitmap(parent.Width, parent.Height); 56 PictureBox pb = new PictureBox(); 57 pb.Size = parent.Size; 58 pb.BackgroundImage = parent.BackgroundImage; 59 pb.BackgroundImageLayout = parent.BackgroundImageLayout; 60 pb.DrawToBitmap(bt, pb.DisplayRectangle); 61 pb.Dispose(); 62 Bitmap destBitmap = new Bitmap(w, h); 63 Graphics g = Graphics.FromImage(destBitmap); 64 g.DrawImage(bt, new Rectangle(0, 0, w, h), new Rectangle(x, y, w, h), GraphicsUnit.Pixel); 65 bt.Dispose(); 66 g.Dispose(); 67 return destBitmap; 68 } 69 else 70 return null; 71 } 72 } 73 74 } DataGViewX?
轉載于:https://www.cnblogs.com/leavind/p/6732530.html
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