是的,对于每个“图层”,使用一个Bitmap
,然后将每个位图绘制到面板上。
您可以通过以特定顺序调用DrawImage
来控制哪个“图层”在顶部。
例如:
private void panel1_Paint(object sender, PaintEventArgs e)
{
Bitmap bmp1 = new Bitmap(panel1.Width, panel1.Height);
Bitmap bmp2 = new Bitmap(panel1.Width, panel1.Height);
Graphics g1 = Graphics.FromImage(bmp1);
Graphics g2 = Graphics.FromImage(bmp2);
g1.FillRectangle(Brushes.Red, 10, 10, 100, 100);
g2.FillEllipse(Brushes.Blue, 20, 20, 100, 100);
e.Graphics.DrawImage(bmp1, 0, 0);
e.Graphics.DrawImage(bmp2, 0, 0);
}