Question

I’m painting an image with e.Graphics.DrawImage in the Form_Paint() event. I use a Timer to refresh the form. The problem is that the animation blinks. It seems that it is taking too long to update e. I have 2 PictureBox inside the Form.

Ideas?

UPDATE:

    public Bitmap Paint(int state, Graphics g)
    {
        this.state = state;

        Bitmap temp;
        Graphics tempGraphics;
        temp = new Bitmap(45, 47, g);
        tempGraphics = Graphics.FromImage(temp);

        switch (state)
        {
            case 0:
                tempGraphics.DrawImageUnscaled(img, x, y);
                break;

            case 1:
                tempGraphics.DrawImageUnscaled(img, x, y - 42);
                break;
        }
    }

This prepares the sprite before adding it to the form.

Answer 1

I solved the problem by avoiding doing any animation on the form itself. If you add controls to a form and then you animate the parent, you over-do the UI thread. The best solution was keeping all the animations in pictureboxes.

So: you either animate directly with g.DrawImage() or you stick to using PictureBox.