Prevent a PictureBox from leaving the screen

Question

I made a Windows Forms Aplication in C#. There's picture box called YourCube which moves according to the key pressed, W,A,S and D. I want to prevent it from leaving the screen, I've seen something similar here Prevent mouse from leaving my form with the answer

private int X = 0;
private int Y = 0;

private void Form1_MouseLeave(object sender, EventArgs e)
{
    Cursor.Position = new Point(X, Y);
}

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
    if (Cursor.Position.X < this.Bounds.X + 50 )
        X = Cursor.Position.X + 20;
    else
        X = Cursor.Position.X - 20;

    if (Cursor.Position.Y < this.Bounds.Y + 50)
        Y = Cursor.Position.Y + 20;
    else
        Y = Cursor.Position.Y - 20;           
}

but for the mouse. How can I do it for the Picture Box?

The solution is fundementally the same as the one you linked. You just have to do the bounds checking in whatever method is doing the moving (Hopefully a method called by a keypress event handler) — Jason Watkins, Mar 30 '16 at 18:42

LoRdPMN · Accepted Answer · 2016-03-30T18:59:46.227

On each key pressed, only move if the PictureBox will not get out of the form bounds, something like this:

private void MoveW() {
    if (YourCube.Top > 0) {
        YourCube.Location = new Point(YourCube.Left, YourCube.Top -1);
    }
}

private void MoveA() {
    if (YourCube.Left > 0) {
        YourCube.Location = new Point(YourCube.Left - 1, YourCube.Top);
    }
}

private void MoveS() {
    if (YourCube.Top + YourCube.Height < form1.ClientRectangle.Height) {
        YourCube.Location = new Point(YourCube.Left, YourCube.Top + 1);
    }
}

private void MoveD() {
    if (YourCube.Left + YourCube.Width < form1.ClientRectangle.Width) {
        YourCube.Location = new Point(YourCube.Left + 1, YourCube.Top);
    }
}

Thanks LoRdPMN, I'v addded the IF whenever a key is pressed to make sure you don't get out of the bounds. Thanks again ! — Alex Kayz, Mar 30 '16 at 18:55

Prevent a PictureBox from leaving the screen

1 Answers1