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发表评论(0)作者:不详, 平台:VB6.0+Win98, 阅读:9963, 日期:2002-04-07
用VB.NET绘制GDI图形

作者:heartsun  



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下面的例子通过重载Form1窗体的OnPaint()方法绘制GDI图形
Protected Overrides Sub onpaint(ByVal e As System.Windows.Forms.PaintEventArgs)
注释://///////////绘制任意直线
Dim g As Graphics = e.Graphics
Dim mypen As Pen = New Pen(Color.Red, 2)
g.DrawLine(mypen, 100, 100, 10, 10)
注释://///////////绘制矩形(任意直线构成的封闭图形)
Dim point1 As PointF = New PointF(100F, 100F)
Dim point2 As PointF = New PointF(200F, 100F)
Dim point3 As PointF = New PointF(200F, 200F)
Dim point4 As PointF = New PointF(100F, 200F)
Dim curvepoints As PointF() = {point1, point2, point3, point4}
g.DrawPolygon(New Pen(Color.Blue, 2), curvepoints)
注释:////////////文本表示
Dim FFamily As FontFamily = New FontFamily("Arial")
Dim font As Font = New Font(FFamily, "20", FontStyle.Bold, FontStyle.Italic, GraphicsUnit.Pixel)
Dim text As String = "I love you!"
Dim solidbrush As SolidBrush = New SolidBrush(Color.Red)
Dim pr As PointF = New PointF(100, 10)
e.Graphics.DrawString(text, font, solidbrush, pr)
注释:////////////平面绘制
Dim rec As RectangleF = New RectangleF(10, 10, 200, 100)
g.DrawPie(mypen, rec, 150, 150)
注释:///////////封闭图形,0.7应该是个圆
g.DrawClosedCurve(mypen, curvepoints, 0.7, Drawing.Drawing2D.FillMode.Alternate)
注释:///////////大家自己试试看吧
g.DrawArc(mypen, 300, 300, 200, 200, 100, 100)
g.DrawCurve(mypen, curvepoints)
g.DrawBezier(mypen, 50, 50, 100, 50, 100, 100, 50, 100)
g.DrawBeziers(mypen, curvepoints)
注释://////////这可是一个圆
Dim rec1 As RectangleF = New RectangleF(10, 10, 100, 100)
g.DrawEllipse(mypen, rec1)
注释://////////这是一个椭圆
Dim rec2 As RectangleF = New RectangleF(10, 10, 200, 100)
g.DrawEllipse(mypen, rec2)

End Sub
这些是我自己试验出来的,当然了,还有好多,我只是开了一个头,大家要是发现什么好东东,别忘了通知一下:)