In general, the problem is that when you click on the panel, a Block object is created and it is drawn:

private void DrawingPanel_Click(object sender, EventArgs e) { Point ptr = PointToClient(Cursor.Position); ptr.X -= DrawingPanelOffset.X; ptr.Y -= DrawingPanelOffset.Y; b = new Block(0, "Class", "Model", ptr); DrawingPanel.Invalidate(); } private void DrawingPanel_Paint(object sender, PaintEventArgs e) { if (b != null) b.Draw(e.Graphics); }

Directly block code

  public void Draw(Graphics g) { Pen BlackPen = new Pen(Color.Black, 4); g.DrawRectangle(BlackPen, Location.X, Location.Y, Location.X + 80, Location.Y + 80); }

As a result, when you click on different places of the panel, different figures are obtained.

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As you can see, the figure stretches and increases in size. What can be done to correct this error?

    1 answer 1

     g.DrawRectangle(..., ..., ..., width, height);

    i.e

     g.DrawRectangle(BlackPen, Location.X, Location.Y, 80, 80);
    • Damn, I just got used to the coordinates of the beginning and the end in delphi - Nicholas Goncharov