我做了#34;获得坐标"部分我需要做" Set"部分,我可以手动输入坐标,然后按"设置"按钮制作" Blue Cirlce"与textBox2
pictureBox1
上输入的坐标一起显示。
此代码为" Get":
int mouseX, mouseY;
Pen bluePen = new Pen(Color.Blue, 1);
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
textBox1.Text = "X = " + e.X + " ; Y = " + e.Y;
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
mouseX = e.X;
mouseY = e.Y;
pictureBox1.Refresh();
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
Rectangle circle = new Rectangle(mouseX - 8, mouseY - 8, 16, 16);
e.Graphics.DrawEllipse(bluePen, circle);
}
答案 0 :(得分:1)
添加按钮点击事件处理方法' ButtonSet_Click'到了#set;'按钮。
private void ButtonSet_Click(object sender, EventArgs e)
{
Point p = getXYfromTextBox();
Rectangle circle = new Rectangle(p.X - 8, p.Y - 8, 16, 16);
Graphics g = pictureBox1.CreateGraphics();
g.DrawEllipse(redPen, circle);
}
//this method can be optimized
private Point getXYfromTextBox()
{
string xy = textBox2.Text.Trim();
string[] xys = xy.Split(';');
mouseX = Convert.ToInt32(xys[0].Split('=')[1].Trim());
mouseY = Convert.ToInt32(xys[1].Split('=')[1].Trim());
Point p = new Point(mouseX, mouseY);
return p;
}
答案 1 :(得分:0)
如果我理解正确,您正试图找到一种方法来将您的输入解析为坐标。试试这个(你需要仔细验证输入字符串并处理将字符串转换为int时抛出的潜在异常。)
private void btnSet_Click(object sender, EventArgs e)
{
string input = tbInput.Text.Trim();
string[] parts = input.Split(",".ToCharArray()); //assume your coordinates are commas-separated, like "80,100"
if (parts.Length == 2)
{
mouseX = int.Parse(parts[0]);
mouseY = int.Parse(parts[1]);
pictureBox1.Refresh(); //Now force picturebox to repaint
}
}