作者wwllccrr (松鼠)
看板C_Sharp
标题Re: [问题] 绘图与部分绘图
时间Fri Feb 13 17:33:17 2009
抱歉! 真的是试了很久还是写不出来! 希望您能再给点提示!
目前我的程式码：
Bitmap offScreenBmp;
Graphics Screen;
private void Form_load_call()
{
offScreenBmp = new Bitmap(this.Width, this.Height);
Graphics Buffer= Graphics.FromImage(offScreenBmp);
Bitmap pic = new Bitmap("pic.jpg");
Buffer.Clear(this.BackColor);
Buffer.DrawImage(pic, pic_x, 0, pic.Width, pic.Height);
}
private void MyPaint()
{
Screen.DrawImage(offScreenBmp, 0, 0);
}
private void Timer_move(object sender, EventArgs e)
{
pic_x += 3; //先不设定KeyDown 直接让他移动就好
MyPaint();
}
执行以後MyPaint()那行会出现：
NullReferenceException未处理
并未将物件参考设定为物件的执行个体
请问要怎麽解决呢?
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