优化步骤操作

tangxu

2025-02-26 2fc64c1af548596c4719d4a3abdc10de7a1d7e8f

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
#region Imports
 
using DPumpHydr.WinFrmUI.RLT.Colors;
using DPumpHydr.WinFrmUI.RLT.Util;
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;
 
#endregion
 
namespace DPumpHydr.WinFrmUI.RLT.Controls
{
    #region HopeComboBox
 
    public class HopeComboBox : ComboBox
    {
        public HopeComboBox()
        {
            DrawItem += HopeComboBox_DrawItem;
            //SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.OptimizedDoubleBuffer, true);
            //DoubleBuffered = true;
            FlatStyle = FlatStyle.Flat;
            DrawMode = DrawMode.OwnerDrawFixed;
 
            Cursor = Cursors.Hand;
 
            Font = new("Segoe UI", 12F);
            ItemHeight = 30;
        }
 
        [DllImport("user32.dll")]
        private static extern IntPtr GetWindowDC(IntPtr hWnd);
 
        [DllImport("user32.dll")]
        private static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
 
        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
 
            if (m.Msg is 0x000F or 0x133)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0)
                {
                    return;
                }
 
                Graphics graphics = Graphics.FromHdc(hDC);
 
                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
                graphics.SmoothingMode = SmoothingMode.HighQuality;
                graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
                graphics.Clear(Parent.BackColor);
 
                GraphicsPath backPath = RoundRectangle.CreateRoundRect(1, 1, Width - 2, Height - 2, 2);
                graphics.FillPath(new SolidBrush(Color.White), backPath);
                graphics.DrawPath(new(HopeColors.OneLevelBorder, 2), backPath);
 
                graphics.FillRectangle(new SolidBrush(Color.White), new RectangleF(1, 1, Width - 2, Height - 2));
 
                graphics.DrawString(Text, Font, new SolidBrush(HopeColors.PrimaryColor), new Point(6, 6));
 
                graphics.DrawString("6", new Font("Marlett", 12), new SolidBrush(SystemColors.ControlDark), new Rectangle(Width - 22, (Height - 18) / 2, 18, 18));
 
                _ = ReleaseDC(m.HWnd, hDC);
            }
        }
 
        private void HopeComboBox_DrawItem(object sender, DrawItemEventArgs e)
        {
            if (e.Index < 0)
            {
                return;
            }
 
            e.DrawBackground();
            e.DrawFocusRectangle();
 
            e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
            e.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
            e.Graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
            e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
 
            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            {
                e.Graphics.FillRectangle(new SolidBrush(HopeColors.ThreeLevelBorder), e.Bounds);
 
                e.Graphics.DrawString(base.GetItemText(base.Items[e.Index]), Font, new SolidBrush(HopeColors.PrimaryColor), e.Bounds, HopeStringAlign.BottomLeft);
            }
            else
            {
                e.Graphics.FillRectangle(new SolidBrush(Color.White), e.Bounds);
                Color textColor = HopeColors.MainText;
 
                e.Graphics.DrawString(base.GetItemText(base.Items[e.Index]), Font, new SolidBrush(textColor), e.Bounds, HopeStringAlign.BottomLeft);
            }
            e.Graphics.Dispose();
        }
    }
 
    #endregion
}