在第一个面板中画一个正方形,在第二个面板中得到一个完整的正方形,
我在 winForm 中有 2 个面板,
面板A
public partial class frmPaint : Form
{
public Point x = new();
public Point y = new();
public Pen penA = new(Color.Red, 2);
public Pen Eraser = new(Color.White, 10);
public Graphics graphics;
public frmPaint()
{
InitializeComponent();
graphics = panelDraw.CreateGraphics();
}
private void panelDraw_MouseDown(object sender, MouseEventArgs e)
{
y = e.Location;
if (rbLineWidth5.Checked)
penA.Width = 5;
if (rbLineWidth10.Checked)
penA.Width = 10;
if (rbLineWidth15.Checked)
penA.Width = 15;
}
private void panelDraw_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
x = e.Location;
graphics.DrawLine(penA, x, y);
y = e.Location;
}
if (e.Button == MouseButtons.Right)
{
x = e.Location;
graphics.DrawLine(Eraser, x, y);
y = e.Location;
}
}
private void btnColor_Click(object sender, EventArgs e)
{
ColorDialog colorDialog = new();
if (colorDialog.ShowDialog() == DialogResult.OK)
penA.Color = colorDialog.Color;
}
}
我应该如何更改此代码,以便当我在 panelA 中绘制某些内容时,panelB 应该理解我绘制的内容,如果绘制的形状类似于正方形,则在 panelB 的相同位置应该有一个正方形
像这样