vb.net圆圈控件 vb圆形按钮控件

VB.NET中windows窗体控件如何画一个圆VB.NET没用过
VB6的话用form.circle方法画圆,圆的半径和圆点用form.width或者form.height乘以比例数来得到,然后在form_resize事件中重画圆就可以了
不知道和VB.NET差别大不大
VB.net该如何将图片圆形显示?新建一个Winform,拖两个图片框 。图片框1在设计器中选择一个图片(尺寸在图片框容纳为佳) 。如下代码测试通过:
private void button1_Click(object sender, EventArgs e)
{
Image img1 = this.pictureBox1.Image;
Image img2 = CropToCircle(img1);
this.pictureBox2.Image = img2;
}
public Image CropToCircle(Image img1)
{
Image img2 = new Bitmap(img1.Width, img1.Height,
img1.PixelFormat);
Graphics g = Graphics.FromImage(img2);
using (Brush br =
new SolidBrush(SystemColors.Control))//背景色
{
g.FillRectangle(br, 0, 0,
img2.Width, img2.Height);
}
GraphicsPath path = new GraphicsPath();
path.AddEllipse(0, 0, img2.Width, img2.Height);
g.SetClip(path);
【vb.net圆圈控件 vb圆形按钮控件】g.DrawImage(img1, 0, 0);
return img2;
}
vb.net中有没有哪个控件可以自定义形状(如圆形,多边形)和颜色,如果有,希望你您给出代码记得VB6当中有Shape控件vb.net圆圈控件,但是VB.net里这个控件不存在vb.net圆圈控件了 。
提个思路:使用Picture控件或Label控件vb.net圆圈控件,通过代码在控件里绘图想要vb.net圆圈控件的图形vb.net圆圈控件,可以试试 。
vb.net怎样改变picturebox控件的形状'我给你找到了,设置region属性就可
Private Sub PictureBox1_DoubleClick(sender As System.Object, e As System.EventArgs) Handles PictureBox1.DoubleClick
If PictureBox1.Region Is Nothing Then
Dim path As New System.Drawing.Drawing2D.GraphicsPath
path.AddEllipse(0, 0, 200, 200)
PictureBox1.Region = New Region(path)
Else
PictureBox1.Region = Nothing
End If
End Sub
'这个双击图片框使其变形,通过GraphicsPath对象可以作出各种形态来,比如可作出文字形状
Dim stringText As String = "我是谁"
Dim family As New FontFamily("Arial")
Dim myfontStyle As Integer = CInt(FontStyle.Italic)
Dim emSize As Integer = 86
Dim origin As New Point(20, 20)
Dim format As StringFormat = StringFormat.GenericDefault
path.AddString(stringText, family, myfontStyle, emSize, _
origin, format)
PictureBox1.Region = New Region(path)
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