我对c#非常陌生,我有一个简单的问题: 我应该在黑色背景上绘制一个白色粒子(矩形)并将其从一个屏幕水平移动到另一个屏幕。 我做到了,但问题是它眨了太多(即即使速度很高也不顺畅,我可以很容易地看到每个动作和另一个动作之间的黑色背景)
t.Interval = 1000 / speed;
t.Tick += new EventHandler(t_Tick);
t.Start();
...
void t_Tick(object sender, EventArgs e)
{
//g.Clear(Color.Black);
g.DrawRectangle(new Pen(Brushes.Black, 20), r); //draw a black rectangle in the old position...20 is the thickness of the pen
r.X += move_x;
g.DrawRectangle(new Pen(Brushes.White, 20), r); //draw a white rectangle in the new position...20 is the thickness of the pen
if (r.X >= 1700) ///this means it reached the end of the screen
t.Stop();
}
我使用g.Clear来清除图形,但这也没有用,所以我在旧位置绘制了一个黑色矩形,然后将其移动到新位置。
任何想法如何消除这种眨眼甚至以另一种方式做到这一点?
答案 0 :(得分:0)
试试这个...将一个Panel(panel1)添加到表单:
public partial class Form1 : Form
{
private Rectangle r;
private const int rSize = 50;
private const int move_x = 10;
private System.Windows.Forms.Timer tmr;
public Form1()
{
InitializeComponent();
panel1.BackColor = Color.Black;
r = new Rectangle(0, panel1.Height / 2 - rSize / 2, rSize, rSize);
tmr = new System.Windows.Forms.Timer();
tmr.Interval = 50;
tmr.Tick += new EventHandler(tmr_Tick);
tmr.Start();
panel1.Paint += new PaintEventHandler(panel1_Paint);
}
void tmr_Tick(object sender, EventArgs e)
{
r.X += move_x;
panel1.Refresh();
if (r.X > panel1.Width)
{
tmr.Stop();
MessageBox.Show("Done");
}
}
void panel1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.DrawRectangle(Pens.White, r);
}
}