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:
108:
109:
110:
111:
112:
113:
114:
115:
116:
117:
118:
119:
120:
121:
122:
123:
124:
125:
126:
127:
128:
129:
130:
131:
132:
133:
134:
135:
136:
137:
138:
139:
140:
141:
142:
143:
144:
145:
146:
147:
148:
149:
150:
151:
152:
153:
154:
155:
156:
157:
158:
159:
160:
161:
162:
163:
164:
165:
166:
|
'written by schale(experts-exchange or [email protected])
Imports System.Drawing.Drawing2D
Public Class frmRubberband
Const RubberLine = 0
Const RubberRect = 1
Const Solid = 0
Const Dashes = 1
Dim StartPt As Point
Dim DrawToPt As Point
Dim LastPt As Point
Dim dwg As Boolean = False
Dim Rubberband As Boolean = RubberLine
Dim Linestyle As Integer = Solid
Dim MyPen As New Pen(Color.FromArgb(128, Color.Black), 1)
Private Sub frmRubberband_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
Dim g As Graphics = e.Graphics
Dim MyBrush As New SolidBrush(Color.FromArgb(128, 0, 0, 0))
With g
'MyBrush.Color = Color.FromArgb(128, Color.Red)
'.FillEllipse(MyBrush, 50, 50, 100, 50)
'MyBrush.Color = Color.FromArgb(128, Color.Green)
'.FillEllipse(MyBrush, 100, 75, 100, 50)
'MyBrush.Color = Color.FromArgb(128, Color.Blue)
'.FillEllipse(MyBrush, 150, 100, 100, 50)
'MyBrush.Color = Color.FromArgb(128, Color.White)
'.FillEllipse(MyBrush, 200, 120, 100, 50)
.FillEllipse(Brushes.Red, 10, 10, 100, 50)
.FillEllipse(Brushes.Green, 60, 60, 100, 50)
.SmoothingMode = SmoothingMode.AntiAlias
.FillEllipse(Brushes.Blue, 110, 110, 100, 50)
.FillEllipse(Brushes.White, 160, 160, 100, 50)
End With
End Sub
Private Sub frmRubberband_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
StartPt.X = e.X
StartPt.Y = e.Y
DrawToPt = StartPt
LastPt = StartPt
pbxRubberband.Show()
dwg = True
End Sub
Private Sub frmRubberband_MouseMove(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove
If dwg Then
DrawToPt.X = e.X
DrawToPt.Y = e.Y
pbxRubberband.Show()
RedrawRubberBand()
End If
End Sub
'=======================================================================
'= If the rubberband paints over any controls on the form, go back to =
'= design mode, right click on the rubberband and select SEND_TO_BACK. =
'=======================================================================
Private Sub RedrawRubberBand()
Dim xStart, yStart, xEnd, yEnd As Integer
With pbxRubberband
If DrawToPt.X < StartPt.X Then
.Left = DrawToPt.X
.Width = StartPt.X - DrawToPt.X
xStart = 0
xEnd = .Width - 1
Else
.Left = StartPt.X
.Width = DrawToPt.X - StartPt.X
xStart = .Width - 1
xEnd = 0
End If
If DrawToPt.Y < StartPt.Y Then
.Top = DrawToPt.Y
.Height = StartPt.Y - DrawToPt.Y
yStart = 0
yEnd = .Height - 1
Else
.Top = StartPt.Y
.Height = DrawToPt.Y - StartPt.Y
yStart = .Height - 1
yEnd = 0
End If
.Refresh()
If Rubberband = RubberLine Then
.CreateGraphics.DrawLine(MyPen, xStart, yStart, xEnd, yEnd)
Else 'Draw a RubberRectangle
If chkbxShadedRectangle.Checked Then
.CreateGraphics.FillRectangle(MyPen.Brush, 0, 0, .Width - 1, .Height - 1)
Else
.CreateGraphics.DrawRectangle(MyPen, 0, 0, .Width - 1, .Height - 1)
End If
End If
End With
LastPt = DrawToPt
End Sub
Private Sub frmRubberband_MouseUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp
DrawToPt.X = e.X
DrawToPt.Y = e.Y
dwg = False
End Sub
Private Sub btnLine_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLine.Click
Rubberband = RubberLine
RedrawRubberBand()
End Sub
Private Sub btnRectangle_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRectangle.Click
Rubberband = RubberRect
RedrawRubberBand()
End Sub
Private Sub btnSolidLine_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSolidLine.Click
MyPen.DashStyle = DashStyle.Solid
RedrawRubberBand()
End Sub
Private Sub btnDashedLine_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDashedLine.Click
MyPen.DashStyle = DashStyle.Dash
RedrawRubberBand()
End Sub
Private Sub updnLineWidthSelect_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles updnLineWidthSelect.ValueChanged
MyPen.Width = updnLineWidthSelect.Value
RedrawRubberBand()
End Sub
Private Sub chkbxShadedRectangle_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkbxShadedRectangle.CheckedChanged
RedrawRubberBand()
End Sub
'Private Sub pbxRubberband_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles pbxRubberband.Click
' pbxRubberband.Hide()
'End Sub
End Class
|
