C# Question
draw from another Methode doesn't work
In this code im creating a Grid in the
Form1If I'm calling the
ComputerPlayerWhat am I missing?
public class Form1 : Form
{
public Form1()
{
Text = "Form1";
Size = new Size(400, 400);
Paint += new PaintEventHandler(Print);
CenterToScreen();
}
public void Print(object sender, PaintEventArgs e)
{
Graphics graphics = e.Graphics;
int i = 0, j;
DoubleBuffered = true;
Paint += new PaintEventHandler(Cursor);
...
}
public void Cursor(object sender, PaintEventArgs e)
{
Font arialBold = new Font("Arial", 14.0F);
{
TextRenderer.DrawText(e.Graphics, ("@"), arialBold,
new Point(x, y), Color.Red);
}
}
}
public class ComputerPlayer : Form1
{
public void InitiateComputerCursor()
{
if (count-- != 0)
{
Paint += new PaintEventHandler(ComputerCursor);
this.Invalidate();
}
}
private void ComputerCursor(object sender, PaintEventArgs e)
{
DoubleBuffered = true;
Font arialBold = new Font("Arial", 14.0F);
TextRenderer.DrawText(e.Graphics, ("@"), arialBold,
new Point(x, y), Color.Red);
}
}
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Answer Source
May be I got it totally wrong but looking at your code it seems you are inheriting from Form1, this is creating two different instances of Form1 but only is shown in the screen so changes to ComputerPlayer will not have any visual effect.
May be you could change the code as follows:
public class ComputerPlayer
{
private Form1 _form1;
public ComputerPlayer(Form1 form)
{
_form1 = form;
}
public void InitiateComputerCursor()
{
if (count-- != 0)
{
_form.Paint += new PaintEventHandler(ComputerCursor);
_form.Invalidate();
}
}
private void ComputerCursor(object sender, PaintEventArgs e)
{
DoubleBuffered = true;
Font arialBold = new Font("Arial", 14.0F);
//You might need to replace the following line for a method in form1 that have access to TextRenderer
_form1.TextRenderer.DrawText(e.Graphics, ("@"), arialBold,
new Point(x, y), Color.Red);
}
}
Then whatever you initialize ComputerPlayer in Form1 pass the reference to the constructor:
ComputerPlayer computerPlayer = new ComputerPlayer(this);
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