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private int oo,uu;
private Graphics gs;
private void Form1_Load(object sender, System.EventArgs e)
{
oo=100;
uu=200;
}
private void cxh()
{
gs.Clear(this.BackColor);
gs.DrawImage(this.imageList1.Images[0],oo,uu);
}
private void Form1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
switch(e.KeyCode)
{
case Keys.Left:
oo=oo-5;
cxh();
break;
case Keys.Right:
oo=oo+5;
cxh();
break;
case Keys.Up:
uu=uu-5;
cxh();
break;
case Keys.Down:
uu=uu+5;
cxh();
break;
}
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
gs=e.Graphics;
cxh();
}
加入以下代码就解决
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
//加入这行!!!!!!!!!!!!!!!!
gs = this.CreateGraphics();
switch (e.KeyCode)
{
...
}
